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5. MECHANICAL SYSTEMS 5.2 HEAT RECOVERY STEAM GENERATOR
MITSUBISHI
Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 2 - 1
This document contains information proprietary to Mitsubishi Heavy Industries, Ltd. It is submitted in confidence and is to be used solely for the purpose for which it is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of Mitsubishi Heavy Industries, Ltd.
CONTENTS
5.2.1 INTRODUCTION
5.2.2 GENERAL
5.2.3 STEAM DRUM
5.2.4 HEAT TRANSFER TUBES, CONNECTING PIPES, HEADER AND VALVES
5.2.5 STEEL STRUCTURES
5.2.6 STAIRWAYS AND PLATFORMS
5.2.7 CASING
5.2.8 INSULATION
5.2.9 DUCTWORK AND STACK
5.2.10 SAFETY VALVES
5. MECHANICAL SYSTEMS 5.2 HEAT RECOVERY STEAM GENERATOR
MITSUBISHI
Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 2 - 2
This document contains information proprietary to Mitsubishi Heavy Industries, Ltd. It is submitted in confidence and is to be used solely for the purpose for which it is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of Mitsubishi Heavy Industries, Ltd.
5.2.1 INTRODUCTION
This section describes of the Heat Recovery Steam Generator (HRSG) for Ashuganj CCPP project in Bangladesh. We will supply one HRSG which will generate steam by the heat of the exhaust gas from one MITSUBISHI 701F gas turbines.
5.2.2 GENERAL
The hot exhaust gases, which are discharged from the gas turbine, are channeled through an HRSG in order to heat incoming feedwater and subsequently generate saturated and superheated steam. The exhaust gas exits the HRSG through an exhaust stack. HRSGs contain an array of equipment, including interconnected banks of tubes, steam drums, headers, connecting pipes, and other components. The tube banks within the HRSG are arranged in a particular order to optimize the heat exchange process. The various tube banks included in an HRSG are economizers, evaporators, superheaters and reheaters. The tubes have fins — that is, metal projections from the outer wall of the tube that increase the surface area for the transfer of heat from the exhaust gas outside the tube to the water or steam flowing inside the tube. The steam production process starts with water entering the HRSG from a feedwater system. The feedwater first enters each (three pressure levels) economizer tube bank. The economizer heats the water to a temperature slightly below the boiling point.
5. MECHANICAL SYSTEMS 5.2 HEAT RECOVERY STEAM GENERATOR
MITSUBISHI
Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 2 - 3
This document contains information proprietary to Mitsubishi Heavy Industries, Ltd. It is submitted in confidence and is to be used solely for the purpose for which it is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of Mitsubishi Heavy Industries, Ltd.
Water leaving the economizer enters a steam drum. A portion of the water, which flows through the evaporator tube bank, is converted into steam (or evaporated). The resulting steam/water mixture exits the evaporator tubes and enters the steam drum. Steam drums are large diameter cylindrical vessels, which are located above the evaporator banks. A steam drum’s functions are described in detail below. In the superheater, the steam is “superheated” above the boiling temperature, and then leads to the steam turbine. There are three differential pressure cycles, that is
HP cycles : High pressure cycle IP cycles : Intermediate pressure cycle (including reheater section) LP cycles : Low pressure cycle
The tube banks located within an HRSG consist of fin tubes. The hot gas turbine exhaust at the inlet flows toward the HRSG outlet of gas side, and the heat absorption of cool water temperature starts from the HRSG outlet of gas side toward the HRSG inlet of gas side.
The superheated steam then expands through the HP steam turbine — turning it and the electrical generator to which it is connected, and in the process losing both pressure and temperature. The steam is collected and flows back to the HRSG to be reheated at an intermediate pressure by passing through a reheater tube bank. This “reheat” steam then returns to power a different part of the IP turbine. When the steam has completed its work in the turbine, the steam is turned back into water in the condenser following the turbine outlet, and returned to the feedwater portion of the cycle and back to the HRSG. This condensate is subjected to a deaeration process; in which dissolved air is removed from the liquid water. This feedwater is then pressurized via
5. MECHANICAL SYSTEMS 5.2 HEAT RECOVERY STEAM GENERATOR
MITSUBISHI
Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 2 - 4
This document contains information proprietary to Mitsubishi Heavy Industries, Ltd. It is submitted in confidence and is to be used solely for the purpose for which it is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of Mitsubishi Heavy Industries, Ltd.
feedpumps and fed to the inlet of the each pressure level economizer, where the cycle is repeated.
5.2.3 STEAM DRUMS
(1) We will supply steam drums as follows for each HRSG:
(a) One (1) high pressure steam drum
(b) One (1) intermediate pressure steam drum
(c) One (1) low pressure steam drum
(2) The purposes of the steam drums are as follows:
(a) To separate and purify the steam from the water via various drying devices and deliver the steam through a series of saturated steam pipes to the inlet of a tube bank “superheater”.
(b) To mix the incoming feedwater water from the economizer with the saturated water from the evaporator.
(c) To mix chemicals with the feedwater and direct that treated water back to the inlet section of the evaporator through a series of pipes “downcomers”.
(d) To remove part of the water through “blow-down” in order to control the boiler water solids and quality.
(e) To provide adequate storage capacity to accommodate changes in boiler load, especially during transient operations, while being able to maintain control of the aforementioned capabilities.
5. MECHANICAL SYSTEMS 5.2 HEAT RECOVERY STEAM GENERATOR
MITSUBISHI
Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 2 - 5
This document contains information proprietary to Mitsubishi Heavy Industries, Ltd. It is submitted in confidence and is to be used solely for the purpose for which it is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of Mitsubishi Heavy Industries, Ltd.
5.2.4 HEAT TRANSFER TUBES, CONNECTING PIPES, HEADER AND VALVES
(1) The heat transfer parts of the HRSG consists are as follows:
(a) High pressure superheater section
(b) High pressure evaporator section
(c) High pressure economizer section
(d) Reheater section
(e) Intermediate pressure superheater section
(f) Intermediate pressure evaporator section
(g) Intermediate pressure economizer section
(h) Low pressure superheater section
(i) Low pressure evaporator section
(j) Low pressure economizer section
(2) The function of heat transfer parts are as follows:
(a) The economizers recover the remaining thermal energy contained in the flue gas at the evaporator outlet and heat feedwater before entering the steam drums.
5. MECHANICAL SYSTEMS 5.2 HEAT RECOVERY STEAM GENERATOR
MITSUBISHI
Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 2 - 6
This document contains information proprietary to Mitsubishi Heavy Industries, Ltd. It is submitted in confidence and is to be used solely for the purpose for which it is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of Mitsubishi Heavy Industries, Ltd.
(b) Saturated steam is generated at the evaporator and the steam drum.
(c) The superheaters heat the saturated steam from the drum up to the specified temperatures.
(d) The reheaters heat the mixed steam with exhausted steam from the HP steam turbine and the steam from the IP superheater up to the specified temperature.
(3) The fins are spirally attached around the tubes by means of resistance welding method.
5.2.5 STEEL STRUCTURES
The steel structure is provided to support the HRSG and its auxiliary equipment, piping, ducts and platforms. The structure is designed to withstand wind and seismic forces. Erection loads and other forces resulting from expansion and/or contraction of ducts, piping, structural steel and so on are also considered.
5.2.6 STAIRWAYS AND PLATFORMS
Platforms are provided around the drums. Stairways and/or ladders are provided to access the platforms and the manholes. One main stair from ground level up to the drum level is provided. All platforms and walkways are provided with handrails.
5. MECHANICAL SYSTEMS 5.2 HEAT RECOVERY STEAM GENERATOR
MITSUBISHI
Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 2 - 7
This document contains information proprietary to Mitsubishi Heavy Industries, Ltd. It is submitted in confidence and is to be used solely for the purpose for which it is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of Mitsubishi Heavy Industries, Ltd.
5.2.7 CASING
Heat transfer surface is enclosed by a cold casing that is lined with internal insulation and liner plate. The casing is made of welded steel sheet panels and is suitably thickened and reinforced. The flue gas path through heat transfer surface is gastight to prevent leakage and bypassing of hot gas within the casing. The casing and tube supports are designed to allow full expansion of tubes. Penetration of the casing required for piping connection or other pressure part is sealed. Access manholes are provided in the side casing at bottom header level.
5.2.8 INSULATION
The flue gas inlet duct and HRSG casing are internally insulated. And outlet duct is externally insulated. The outer surface temperature of them will be designed adequately low in accordance with manufacture’s standard to prevent scald and excessive heat loss. Studs used for attachment of insulation is adequate material in length suitable for the insulation thickness.
5.2.9 DUCTWORK AND STACK
HRSG inlet duct, HRSG outlet duct and stack are provided. For optimized flue gas distribution, the HRSG inlet duct configuration is constructed so as to reduce the velocity head and properly distribute the flue
5. MECHANICAL SYSTEMS 5.2 HEAT RECOVERY STEAM GENERATOR
MITSUBISHI
Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 2 - 8
This document contains information proprietary to Mitsubishi Heavy Industries, Ltd. It is submitted in confidence and is to be used solely for the purpose for which it is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of Mitsubishi Heavy Industries, Ltd.
gas to heating surfaces. HRSG exhaust stack is furnished with interconnecting ductwork from the HRSG outlet. The stack is designed to withstand flow-induced vibration.
5.2.10 SAFETY VALVES
The safety valves are of spring loaded type, workshop tested and fitted on drum and superheater, and equipped with outlet silencers. They shall be capable of discharging at least 100% of the maximum steam generating capacity of the HRSG.
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 1
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
5.3.1 TURBINE OUTLINE
5.3.2 TURBINE COMPONENTS
5.3.3 TURBINE VALVES
5.3.4 GLAND AND DRAIN SYSTEM
5.3.5 CONTROL AND LUBRICATING OIL SYSTEM
5.3.6 DESCRIPTION ON THE SYNCRONOUS CLUTCH
BETWEEN ST AND GENERATOR
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 2
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
5.3.1 TURBINE OUTLINE
This unit consists of one cylinder, single axial exhaust, condensing reheat turbine
designed for high operating efficiency and maximum reliability.
The construction of the entire turbine is shown in the outline drawing, attached at
the end of this section as C00-500.
The HP steam from one set of the HP stop valve and HP control valve enters the HP
turbine through an inlet pipe.
The steam flows through the HP blading producing the power, decreasing its
pressure and temperature, and enters the HRSG.
The IP steam from HRSG enters the IP turbine through an inlet pipe and enters the
IP blading.
The LP steam from the LP stop and LP governing valves is mixed with the IP
turbine exhaust flow in the casing.
The steam flows through the LP reaction blading and flows axially through an
exhaust cone, thence to a condenser.
The low pressure element incorporating high efficiency blading, and diffuser type
exhaust, and improved exhaust hood design have resulted in a significant
improvement in turbine heat consumption.
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 3
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
5.3.2 TURBINE COMPONENT
(1) Blading
The blade path includes the single flow impulse and reaction blading in the high and
intermediate pressure part and the single flow reaction blading in the low pressure
part.
The interstage seals are of labyrinth type fitted at small diameters on the shaft thus
ensuring minimum stage leakage losses.
The reaction type blading is adopted in low pressure end part of turbine because of
its high efficiency in larger volumetric flow part. In the reaction blade path, the
steam velocity is relatively slow resulting lower friction loss, namely better
aerodynamic efficiency.
In process of the low pressure end blades design, the careful considerations are
made for the prevention of the erosion as well as for the better performance. The
moisture or drips flow in the blade paths has been investigated and the blade path
has been improved considering the test results. Beside of this, enough length of
stellite strip is attached into the leading edge of last rotating blade. All the long
blades are manufactured under severe quality control.
Blades are manufactured of corrosion and erosion resistant alloys with the high
damping coefficient for vibration, developed through the extensive research.
(2) Rotor
The material of turbine rotor has excellent creep rupture strength, high tensile
strength with excellent ductile quality. This rotor has a thrust balance piston to have
a good thrust balance opposed to a reaction force of the blades.
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 4
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
The rotor diameters are so selected to give their critical speeds properly apart from
the running speed.
The rotor surface geometry is carefully designed to give least stress concentration
for the transient thermal stress as well as the bending stress.
(3) Shaft System
The shaft system consists of one gas turbine, generator and one steam turbine, and
these parts are connected with a SSS clutch which can transmit necessary torque and
absorb shaft system thermal expansion.
(4) Casing
The structural shape of the casing and the method of support are carefully designed
to obtain free but symmetrical movements due to temperature changes and thereby
reduce the possibility of distortion to minimum.
The complete casing is made in two section, the high and intermediate pressure
section being of cast steel and the low pressure section of steel plate. Each section is
split in the horizontal plane through the axis so as to form a base and cover. During
the installation the vertical joint is made up permanently and thereafter the cover is
handled as a single piece. A complete inspection can be made by removing the cover
only and the base need not to be disturbed after installation.
The low pressure end of the cylinder is supported by feet. These supporting feet rest
on seating plate which is mounted on the concrete foundation with adjusting liners.
The position of the cylinder at this end is maintained by three keys placed between
the supporting feet and the seating plate. Two of these keys, placed transversely on
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 5
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
the transverse centerline of the exhaust definitely locate the cylinder in an axial
direction but permit free expansion in a transverse direction.
The third key placed axially on the longitudinal centerline just below the low
pressure side bearing pedestal definitely locates this end of the cylinder in a
transverse direction but permits free expansion in an axial direction. Therefore, from
a point at the key the cylinder can expand freely in any direction in the horizontal
plane at the top of the foundation seating plate.
At the high pressure end the cylinder is supported by two arms (or lugs) which are
cast integrally at the top of the base. These arms rest on a separate pedestal and are
free to slide in a transverse direction being secured only loosely by bolts. The
cylinder is connected to the pedestal by a channel beam (centering beam) and pins
placed on the longitudinal centerline thus maintaining the correct axial and
transverse position of the cylinder with relation to the pedestal.
The base and cover of the cylinder are bolted together by large studs and bolts. In
order to obtain the proper stress in each of these studs, they must be tightened
sufficiently to stretch them a definite amount.
(5) Bearings
The turbine has one journal bearing and one journal-thrust combined bearing, of
forced lubricated type.
For the journal bearing, the self-aligning spherical seated type is adopted, in order to
get good bearing alignment along the shaft.
The vertical and horizontal location of the bearing in the pedestal will be
accomplished by inserting or removing liners between individual keys and the shell.
The stop dowel in lower half of the bearing shell projects into the notch in the
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 6
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
pedestal, thus preventing rotation of the bearing relative to the pedestal. The positive
supply of the lubricating oil assure through drilled passages in the pedestal, the key
and the shell halves.
The thrust bearing is of the leveling type, which automatically distributes the load
equally among the several shoes.
The leveling plates allow the shoes to take a position so that the center of the
loading of the babbitt faces is all in the same plane by means of their rocking
motion.
The thrust of the rotor is transmitted to the shoes by the steel collar. A full
complement of shoes is provided on each side of the thrust collar to carry the thrust
in either direction.
All the bearings have an indicating dial thermocouple to measure the oil drain
temperature and a thermocouple to measure the bearing metal temperature.
The turbine is incorporated with grounding device to prevent the shaft voltage
trouble.
(6) Turning Gear
Turbine has a turning gear to maintain the good condition of gas and steam turbine
rotors while the turbine is shut down.
Turning device has necessary provisions for automatic turning gear engagement and
disengagement.
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 7
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
5.3.3 TURBINE VALVES
(1) HP Stop Valve
The turbine has one HP stop valve for quick stop and speed control at starting,
which are driven by hydraulic servomechanism.
This is an oil operated "Plug" type valve operating in a horizontal position with the
body formed as an integral part of the steam chest.
The steam strainer cylindrical in shape fits around the valve.
Testing switch for partial stroke smooth closing of the valve while unit is in
operation is provided in the central control room.
(2) HP Control Valve
The turbine has one HP control valve, which are controlled by individual hydraulic
servomotor.
The steam valve is a ring sealed plug type valve mounted on the shouldered valve
stem. The diameters of upper seat and lower seat of the valve are so designed as to
balance the steam pressure force acting on the valve. Thus the valve can be open and
closed easily at any pressure.
When in the closed position, the load of the compression spring acting through the
pin and valve stem holds the valve tightly on its seat.
The valve stem packing consists of a closely fitting bushing provided with a suitable
leakoff opening which should be connected to a zone of lower pressure as
determined by the operating steam conditions.
A shoulder is formed on the valve stem, and it seats on the lower end of the valve
stem bushing when the valve is in its fully open position. This arrangement prevents
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 8
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
steam leakage along the stem while the unit is in operation with control valves fully
open.
Testing switch for partial stroke smooth closing of the valve while unit is in
operation is provided in the central control room.
(3) Reheat Stop Valve
The turbine has one Reheat stop valve, which is driven by on-off control of a
servometor. Testing switch for partial stroke smooth closing of the valve while unit
is in operation is provided in the central control room.
(4) Interceptor Valve
The turbine has one Interceptor valve, which is controlled by individual hydraulic
servomotor. The steam valve is a ring sealed plug type valve mounted on the
shouldered valve stem. The diameter of upper and lower valve seats are so designed
as to balance the steam pressure force acting on the valve. Thus the valve can be
opened and closed easily at any pressure.
When in the closed position, the load of the compression spring acting through the
pin and valve stem holds the valve tightly on its seat.
The valve stem packing consists of a closely fitting bushing provided with a suitable
leakoff opening which should be connected to a zone of lower pressure as
determined by the operating steam conditions.
A shoulder is formed on the valve stem, and it seats on the lower end of the valve
stem bushing when the valve is in its fully open position. This arrangement prevents
steam leakage along the stem while the unit is in operation with control valves fully
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 9
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
open.
The steam strainer cylindrical in shape fits around the valve.
Testing switch for partial stroke smooth closing of the valve while unit is in
operation is provided in the central control room.
(5) LP Stop and control Valve
The turbine will be provided with one LP stop valve and one LP control valve which
are driven by hydraulic servomotors.
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 10
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
5.3.4 GLAND AND DRAIN SYSTEM
The function of the rotor steam gland sealing system is to prevent leakage of air into,
or the steam from, the turbine cylinders along the rotor ends.
This function is accomplished by the following components:
Gland Steam Controller (To be provided by Purchaser)
The purpose of the gland steam controller is to supply sealing steam at a constant
pressure to the turbine glands throughout the start-up, operation, and shut-down of
the turbine.
The controller is adjusted such that at start-up all of the gland sealing steam is
supplied from the high pressure steam supply line through the control valve.
As load increases, increment of leakage steam from high pressure gland reduces the
required external sealing steam.
When the leakage steam from the high pressure gland is in excess of the sealing
steam requirement of the low pressure gland, the control valve regulating the high
pressure steam closes, and the spill-over valve begins to open and passes the excess
steam to a zone of lower pressure in order to maintain the desired sealing steam
pressure as determined by the pressure regulator setting.
The above mentioned sealing equipment is automatically controlled, but can also be
manually controlled.
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 11
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Drain System
The most important thing in turbine operation is to never introduce water into the
turbine.
Condensation, which may be produced in the turbine at start-up or low load, is
routed to the condenser or other equipment through continuous drain orifices and air
operated drain valves (to be provided by Purchaser).
Exhaust Hood Sprays (To be provided by Purchaser except for the spray nozzles)
Automatic sprays are provided to prevent high exhaust temperature of LP turbine.
Temperature control valves control the flow of water from the condensate pump
discharge to spray nozzles installed in the turbine exhaust hood chambers.
Overheating of the exhaust end is not expected even with no load steam and full
vacuum.
The temperature controller for the exhaust hood sprays is set to control exhaust hood
temperature to 70 °C maximum
If a temperature in excess of 80 °C is obtained, care must be taken to gradually
lower the temperature of the exhaust casing by increasing load or improving the
vacuum
The limiting exhaust casing temperature is 120 °C. If this temperature is reached,
the unit should be shut down and the trouble corrected before restarting.
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 12
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Gland
The rotor glands are of the spring backed labyrinth type.
Refer to the following drawings for details of the gland system:
Title Drawing No.
Gland Steam and Drain Piping Diagram C00-506
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 13
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
5.3.5 CONTROL AND LUBRICATING OIL SYSTEM
The control and lubricating oil system are provided as common equipment for both
gas turbine and steam turbine.
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 14
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
5.3.6 Description on the Synchronous Clutch between ST and Generator
(1) Benefits of Using the Synchronous Clutch
MHI offers the single shaft system including the gas turbine, steam turbine and
synchronous clutch. The reason why this type of arrangement has been selected is
listed below.
(a) High Efficiency
In this shaft arrangement, the axial exhaust steam turbine can be adopted because
the thermal elongation of the steam turbine cylinder, which is absorbed by the clutch,
can be isolated within the steam turbine side and no significant thrust force and
elongation can be transmitted into the generator side.
The axial exhaust type steam turbine has an advantage on the efficiency than the
down exhaust type because the negative effect on the efficiency ,i.e. the flow
turbulence and mixing, is almost minimum in the axial exhaust type.
(b) Reduced Start-up Loss
Synchronous clutch allows the gas turbine and generator to be accelerated without
steam turbine. This allows the required starting equipment power can be minimum
and no cooling steam introduced into the low pressure blades are required.
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 15
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
(c) Easier Operation
No complicated start-up procedure is required because the last blade cooling steam
injection is not necessary.
(d) Lower Foundation Height
Because of adopting the axial exhaust steam turbine, the foundation height becomes
lower in comparison with the down exhaust type.
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 16
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
(2) Configuration and Operation
In fig.1 the complete shaft arrangement is listed. During the start-up period, the gas
turbine and generator system will be operated at first without steam turbine coupled
condition. After the gas turbine power and the appropriate steam condition from the
steam generator is established, the steam will be introduced into the steam turbine
and finally, steam turbine will be coupled with the gas turbine and generator system.
Thrust Bearing Rigid Coupling
Thrust Bearing
Synchronous Clutch
Fig.1 Complete Shaft Arrangement
Fig.2 Shaft Arrangement during the Start-up Period
5 MECHANICAL EQUIPMENT 5.3 STEAM TURBINE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
5 - 3 - 17
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
(3) Experiences on using the Synchronous Clutch
Table1 summarizes the MHI’s experiences on using the Synchronous(SSS) clutch.
No Country Unit Name Clutch
Transmitting Power(MW)
Year in Operation
1 KOREA ILSAN #1 130 1993
2 KOREA PUCHON #1 95 1993
3 KOREA ILSAN EXTENSION 72 1996
4 PAKISTAN WAPDA 34 1984
5 JAPAN MISHIMA PAPER 1.3 1989
6 JAPAN KIRIN 3.6 1993
7 MEXICO CAMPECHE 100 2003
8 TAIWAN NANPU 90 2003
9 KOREA HWASEONG 100 2007
10 IRELAND HUNTSTOWN 140 2007
11 KOREA PAJU 100 2010
12 JAPAN SAKAIDE 100 2010
ALTERNATIVE GENERATOR PROPOSAL CASE
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5.4. GENERATOR AND AUXILIARIES 5.4.1 Generator Generator will be designed and manufactured based on the following basic conditions;
(a) Stator winding and core are hydrogen directly cooled type and rotor winding is also hydrogen directly cooled type.
(b) Generator excitation system is static type. (c) Hydrogen sealing is vacuum-treating-type seal oil system.
5.4.1.1 Specification of Generator (a) Type Horizontally mounted cylindrical rotor, rotating field
type with explosion proof structure and for indoor installation
(b) Number of sets One (1) set (c) Applied Standard IEC 60034 (d) Rated output 567 MVA (at cooling water temperature of 31 oC) (e) Power factor 0.85 lag (0.95 lead) (f) Rated voltage 18 kV (g) Rated current 18187 A (h) Frequency 50 Hz (i) Number of poles 2 (j) Rated speed 3,000 min.-1
(k) Number of phases 3 (l) Cooling system Stator coil Hydrogen directly cooled (inner cooling) Rotor coil Hydrogen directly cooled (inner cooling) (m) Hydrogen gas pressure 0.45 MPa-g (n) Service duty Continuous (o) Short circuit ratio Not less than 0.5 at rated MVA (p) Stator coil Star (q) Connection with prime mover Direct (r) Excitation system Static (s) Insulation class and temperature rise
Stator coil Class F, IEC-B rise Rotor coil Class F, IEC-B rise
(t) Neutral grounding Resistor
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(u) Noise level 85dB(A) at 1m away from generator enclosure surface and 1.5m above floor level
(v) Hydrogen cooler Number of coolers Two set of coolers (two sections each) Capacity 100% MVA with all sections in operation
90% MVA with one section out of service
(w)The instrument list of temperature and vibration for turbine generators are shown in Table 5.4-1.
Table 5.4-1 Instrument list
Service 1 Bearing drain oil temperature element
(turbine side of generator), Thermocouple, Single type, 1element 2 Bearing drain oil temperature element
(slip ring side of generator) , Thermocouple, Single type, 1element 3 Bearing metal temperature element
(turbine side of generator) , Thermocouple, Double type, 2elements 4 Bearing metal temperature element
(slip ring side of generator) , Thermocouple, Double type, 2elements 5 Cold gas temperature element
(turbine side of generator) ,RTD, Single type, 2elements 6 Warm gas temperature element, RTD, Single type, 2elements 7 Stator coil winding temperature element
(located between top and bottom coil) ,RTD, Single type, 6elements 8 Slip ring outlet air temperature element, RTD, Single type, 1element 9 Slip ring inlet air temperature element, RTD, Single type, 1element
10 “X” shaft vibration pick up for generator bearing (turbine side) 11 “Y” shaft vibration pick up for generator bearing (turbine side) 12 “X” shaft vibration pick up for generator bearing (slip ring side) 13 “Y” shaft vibration pick up for generator bearing(slip ring side)
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5.4.1.2 Construction of generator (1) Rotor
The major portion of the generator rotor is machined from a single alloy steel forging. The coupling between turbine and generator is one piece steel forging with integral shaft end. The rotor coil ends are supported by floating type retaining rings, shrink-fitted over the rotor body. The retaining rings are fabricated of 18% manganese - 18% chromium stainless steel. The rotor is supported on both ends by end shield mounted bearings.
(2) Stator The generator stator frame consists of a gas tight cylindrical casing of welded plate construction that is reinforced internally by bracing in both the radial and axial directions to provide a rigid structure. The stator core consists of high quality silicon steel sheets. These sheets are punched out in sector shape and coated on both sides with an insulating varnish which is baked on. This will prevent losses caused by eddy currents in the core laminations. To prevent vibration due to magnet force from being transmitted to the frame and foundation, the stator core is supported from the frame by a flexible mounting with a number of leaf springs. This construction has great enough rigidity to support the weight of the core and withstand short circuit torque. The stator coil is constructed as double layer, half coil and end connected to form a complete winding after insertion in slots in the stator core. The conductor of each coil consists of glass sheathed rectangular copper bars. The position of these bars (strands) is Roebel transposed to reduce the eddy-current losses. To prevent corona discharge, semiconducting material is applied to the surface of the coil straight section inserted into the core slot. To achieve a uniform potential gradient at the coil ends, another semiconducting material is used, after that a protective insulating varnish is applied.
(3) Cooling system The generator is cooled by re-circulating gas cooled by gas to water heat exchangers. Cold gas is forced by the generator fans into the ventilating passage of the rotor and around the stator core through the ventilating hole or duct. This arrangement results in substantially uniform cooling of the windings and core.
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The stator coils are indirectly cooled. The coils are cooled by hydrogen gas that flows radially in the ducts of stator core. The rotor coils are directly cooled by the gas which passes through the axial passage in the bottom of slots and radial ducts (Radial Ventilation holes) in the coil. The gas absorbs heat from the rotor coils and is exhausted to the gap. After the gas has passed through the generator, it returns once more to gas to water heat exchangers.
(4) Terminals The main leads of the generator pass through bushings mounted on the leads at the top of the exciter side of frame. These leads will be connected to the line side isolated phase busduct and neutral bus. The bushings are constructed to allow replacement, if necessary, without having to remove the generator rotor. The bushings are located with adequate spacings to enable easy connections of external leads. Dry type bushings are utilized.
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5.4.2 Hydrogen and Carbon Dioxide Gas Control System 5.4.2.1 Principal Functions
(a) To provide a means for safely putting hydrogen in or taking hydrogen out of the generator, using carbon dioxide as a scavenging medium.
(b) To maintain the gas pressure in the generator at the desired value. (c) To indicate to the operator at all times the condition of the generator with regard to gas
pressure and purity. (d) To dry the gas and remove any vapor which might get into the generator housing from the
seal oil (e) To indicate the presence of liquid in the generator housing by an alarm.
5.4.2.2 Configuration
The hydrogen gas and Carbon dioxide gas system consists of the following components: Refer to attached diagram of ABH-F1078-01 (a) Carbon dioxide gas supply unit without CO2 gas cylinders(provided by EPC) (b) Hydrogen gas supply unit without H2 gas cylinders(provided by EPC) (c) H2 gas pressure and purity monitoring unit (d) H2 gas dryer (e) Valve station (f) Water detectors (g) Piping and valves (generator side)
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5.4.3 Seal Oil System The Mitsubishi vacuum-treating type seal oil unit has been developed for application to hydrogen-cooled turbine generators. A large number of these units have been shipped to countries around the world and they have been well-accepted there as well as in Japan.
5.4.3.1 Principal functions (1) The unit supplies seal rings with oil to prevent the escape of hydrogen gas from a
generator, without introducing an excessive amount of air and moisture into the generator. (2) The unit keeps constant differential pressure between the supply oil pressure and the
generator internal gas pressure, and monitors continuously with an alarm indicator.
5.4.3.2 Configuration Refer to attached diagram of ABH-F2108-01
(a) Generator Gland Seals -Gland seals -Seal rings
(b) Seal oil supply unit -Drain Regulator -Oil Filter -Seal Oil Pumps (Main x1, Back-up x1, Emergency x1) -Vacuum pump -Vacuum tank -Seal Oil Cooler
(c) Loop seal tank (d) Seal oil control panel (e) Piping and valves
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5.4.4 Excitation System 5.4.4.1 General
Thyristor-type static excitation system is applied for the excitation system. The static excitation system consists of excitation transformer, excitation cubicle, AVR panel and AC/DC busduct. The design temperature of excitation cubicle will be maximum 40 oC.
5.4.4.2 Excitation transformer
(a) Frequency 50Hz (b) Number of phase Three (3) (c) Rated capacity 5950kVA (d) Voltage rating Primary 18 kV / Secondary 770 V (e) Vector group Dd0 (f) % Impedance 7.8 % at rated transformer capacity base
(Tol.±10%) (g) Cooling method Forced Air cooling(FA) (h) Type Dry, Indoor use En capsulated dry type (i) Insulation class Class F (j) Temperature rise class Class F (k) Accessories One(1) Thermometer with One(1) alarm contact for winding temperature (l) Tap Changer Not Provided (m) Termination HV: Isolated phase busduct LV: Non-segregated busduct (n) Protection IP 31,
IP 21 Ventilation and Terminals (o) Applied Standard IEC60076
5.4.4.3 Excitation Cubicle (a) The excitation cubicle(indoor type) consists of the following panels:
-Thyristor panel -Surge absorber panel -Field circuit breaker(AC type) panel
(b) Ceiling voltage of excitation system: 2.0 times of field voltage at 100% load and 100% generator terminal voltage. (c) Degree of protection:IP 31
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(d) Design temperature:Maximum 40 oC (e) Location:Turbine building
5.4.4.4 AVR cubicle (a) Control function - Over excitation limiter (OEL)
- Minimum excitation limiter (MEL) - Volts/Hertz limiter (VFL) - Power System Stabilizer (PSS), delta P electrical power input type
(b) Degree of protection:IP 21 (c) Location:Air conditioning room
5.4.4.5 AC/DC Busduct
(a) AC Busduct : Indoor, non-segregated metal enclosed type, IP 31, 19m (b) DC Busduct : Indoor, non-segregated metal enclosed type, IP 31, 31 m (c) Applied Standard IEC60439
Note) The data above are preliminary for tender purpose and will be subject to change after
detailed design.
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5.4.5 Current Transformers
The following current transformers will be mounted on the generator terminal bushings for metering relaying and for automatic voltage regulator.
(a) Current ratio 25000 / 5A (b) Burden 30VA (c) Class
Line side of generator: Three (3) for protection 5P20 Three (3) for metering and automatic voltage regulator 0.2 Neutral side of generator Three (3) for protection 5P20 Three (3) for protection 5P20
(d) Applied design code IEC60044-1
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5.4.6. Generator Neutral Grounding Cubicle
Grounding of the generator will be accomplished through connection of a grounding resistor between the neutral of the generator and plant ground. The neutral grounding equipment will prevent excessive transient voltage on the generator neutral and line terminals on an occurrence of a single phase ground fault.
(1) One (1) Discharging resister with the following ratings.
(a) Rated voltage 18/√3 kV
(b) Rated current 6.9 A
(c) Resistance 1500 ohm
(d) Time duty 10 seconds
(2) Degree of protection IP 31
(3) Applied design code IEC62271 (4) Location Turbine building Note) The data above are preliminary for tender purpose and will be subject to change after
detailed design.
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5.4.7 Generator Control Panel
The generator control panel is prepared to supervise and control of the followings for manual/emergency operation. The control switches, indication lamps, indicators, alarm windows and so forth are mounted for Generator and excitation system and Generator synchronizing system. The quantity and type of instruments and control switches, meters and indication lamps that will be mounted on the generator control panel are shown in Table 5.4-2. The generator control panel also houses the generator automatic synchronizer and accessories. The automatic synchronizer will synchronize the generator to the transmission line by regulating voltage and frequency automatically. Synchronizing point will be two(2) points only. One(1) is HV circuit breaker and other is Generator main circuit breaker.
(a) Type Sheet steel, self supporting, totally enclosed (b) Degree of protection IP 21 (c) Design temperature Maximum 40 oC (d) Location Air conditioning room
Table -5.4-2 Mounted Device list for Generator Control Panel
Instrument and devices Quantity (per Unit) Digital meters
1 pc-Volt meter, Var meter, and Power factor meter, 1 pc-Ammeter, Watt meter, and Frequency meter 1 pc- Watt-hour meter, 1-Var-hour meter
1 set
Indicating meter for synchronizing 1-Synchroscope, 2-Volt meter, 2-Frequency meter
1 set
Auto/manual synchronizing control switches 1set Automatic synchronizing equipment 1set Synchro-check relay 1set AVR control switches 1set Generator main circuit breaker switch 1 pc Generator field circuit breaker switch 1 pc Auxiliary relay 1set Multi Transducers
1 pc-Watt, Var, Power factor, Current, Voltage, Frequency
2 pcs-Watt
1 set
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5.4.8 Generator Protection Relay Panel The generator and excitation transformer protection relay panel will be provided with protective relay functions shown in Table -5.4-3.
(a) Type Sheet steel, self supporting, totally enclosed (b) Degree of protection IP 21 (c) Design temperature Maximum 40 oC (d) Location Air conditioning room
Table-5.4-3 Protection Relay functions to be installed in Generator Protection Relay Panel
Protective function or relay Device No Impedance 21G Generator Overexcitation (V/Hz) 24G Generator stator ground fault (100%) 27TNG Reverse power 32G Generator loss of excitation 40G Generator negative phase sequence 46G Inadvertent energizing 50/27G Generator overcurrent (Start up) 50PG Generator stator ground fault (Start up) 51GNPG Generator ground fault (DC) 51GNG Generator overvoltage 59G Generator stator ground fault(95%) 59GNG VT fuse loss detection 60G Rotor ground fault 64F Out of step 78G Generator under frequency 81UG Generator differential 87G Excitation transformer overcurrent 50/51TE
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5.4.9 Static Starting Equipment
Static starting equipment is proposed for the start-up gas turbine unit. One (1) set of static starting system will be supplied for one (1) GT unit(Refer to attached diagram of 6126-D003). The static starting equipment consists of static frequency converter (SFC), transformer, DC reactor and SFC switch circuit control panel.
5.4.9.1 Static frequency converter (SFC) system
(a) Rated output capacity 5000kW (b) Rated output voltage 3.5kV (c) Rated output current 1021A(rms) (d) Output frequency 0.05 – 33.3 Hz (e) Rated input voltage 6.6kV+/-10% (f) Rated input Frequency 50Hz +/-1% (g) Rated input capacity 6800kVA (h) Service duty Continuous (i) Applied standard IEC-60146-1-1 (j) Protection IP 31,
IP 21 Ventilation and Terminals (k) Acoustic Sound Level 85dBA at 1m distance
(l) Design temperature Maximum 40 oC (m)Relative humidity 15-85 %RH,
Dew condensation is prohibited. (n) Type TMP- TS150 (o) Redundancy of Cooling Fan, Control, Thyristor and others Not applicable (p) Seismic Design 0.3G Horizontal (q) Generating Harmonic Current shown in Table5.4-4
Table5.4-4 Harmonic current of SFC is as follows. 5th 7th 11th 13th 17th 19th 23rd 25th
20.0% 14.3% 9.1% 7.7% 5.9% 5.3% 4.3% 4.0%
29th 31th 35th 37th 41th 43th 47th 49rd
3.4% 3.2% 2.9% 2.7% 2.4% 2.3% 2.1% 2.0%
as per IEEE paper No. PCIC-84-52
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5.4.9.2 Converter
(a) Output capacity 5000kW (b) Input voltage 3.8 kV, 50Hz, Three phase (c) Rated DC voltage 4.0kVdc (d) Rated DC current 1250Adc (e) Cooling method Forced air cooling (f) Configuration Three-phase bridge connection (g) Type Indoor use, 6-pulse type (h) Power Fuse Not Provided (i) Cable Entry Bottom
5.4.9.3 Inverter (a) Output capacity 5000kW (b) Output voltage 3.5 kV (c) Output current 1021A(rms) (d) Rated DC voltage 4.0 kVdc (e) Rated DC current 1250Adc (f) Cooling method Forced Air cooling (g) Configuration Three-phase bridge connection (h) Type Indoor use, 6-pulse converter (i) Power Fuse Not Provided (j) Cable Entry Bottom.
5.2.9.4 DC reactor (a) Rated voltage 4.0 kVdc (b) Rated current 1250Adc (c) Reactance 9mH (d) Cooling method Forced air cooling (e) Type Dry, Indoor use (f) Core Silicon Steel (g) Insulation class Class H (h) Temperature rise class Class H (i) Accessories 1 Thermometer with 1 trip contact for winding
temperature
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5.4.9.5 Transformer for SFC
(a) Frequency 50Hz (b) Number of phase Three (c) Rated capacity 6800kVA (d) Voltage rating Primary 6.6 kV / Secondary 3.8 kV (e) Vector group Yd1 (f) % Impedance 12 % at rated transformer capacity base (g) Cooling method Forced Air cooling (h) Type Dry, Indoor use FRP-mold, Pre-Preg (Not vacuum cast coil) (i) Insulation class Class F (j) Temperature rise class Class F (k) Accessories 1 Thermometer with 1 trip contact for winding temperature (l) Tap Changer Not Provided
5.4.9.6 SFC Control Panel
(a) Type TMEIC Standard for TMP- TS150 Indoor use (b) PLC Type MELSEC Q2ASHCPU (c) Operation Panel Type Graphic Operation Terminal (GOT)
GT1575VNBD Used for Status failure indication, and parameter
setting (d) Protection Relay Ratio Differential for SFC Transformer Protection MELPRO-Dash, CAC1-A01D2
(e) Cable Entry Bottom only (f) Protection Items
-Converter; Over current Gate amp. failure Cooling air temperature high Cooling fan failure
Thyristor mis-firing Open phase Surge absorber failure
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Incoming air temperature high -Inverter; Over current Gate amp. failure Cooling air temperature high
Cooling fan failure Thyristor mis-firing Over voltage Low voltage
-Transformer; Ratio differential Temperature high
Cooling fan failure -DC Reactor; Temperature high Cooling fan failure -Control; Control power low voltage MCCB trip
Accelerating time delay Over speed
MELSEC failure
Note: These ratings and data above are preliminary for tender purpose only and may be changed at the detail design stage.
5.4.9.7 SFC Switch circuit control panel
This panel is prepared to control SFC switch, which consisted of circuit breaker(s) and disconnecting switch for SFC start-up operation. Following functions are included in this panel. - Circuit breaker and disconnecting switch on-off control - Select and switch the control and protection circuit between Gas turbine controller,
SFC, AVR and Generator neutral grounding cubicle.
(a) Type Sheet steel, self supporting, Totally enclosed (b) PLC type MELSEC Q02HCPU (c) Degree of protection IP 21 (d) Design temperature Maximum 40 oC (e) Location Air conditioning room
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5.4.10. Attached Drawings And Document (1) Single Line Diagram Generator Circuit 6126-D001 (2) Single Line Diagram for SFC Circuit 6126-D003 (3) Turbine Generator Cooling Water Diagram ABH-F3010-01 (4) Turbine Generator Seal Oil Diagram ABH-F2108-01 (5) Turbine Generator Lube Oil Diagram ABH-F2123-01 (6) Turbine Generator H2 & CO2 Gas Diagram ABH-F1078-01
ELECTRICAL SYSTEMS
MITSUBISHI Bangladesh Ashuganj CCPP Specification No. MP-A2292
6-1 This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
6.0 ELECTRICAL SYSTEMS AND EQUIPMENT 6.1 GENERAL
This section covers the standard technical specification of the Turbine Control Package and Electrical Equipment supplied by MHI for this project.
(1) Standard
The Electrical Equipment will be designed and manufactured in accordance with the standards listed below:
International Electrotechnical Commission (IEC) The Institute of Electrical and Electronics Engineers (IEEE) Japanese Industrial Standards (JIS) Japanese Electrotechnical Committee (JEC) The Japan Electrical Manufacturers’ Association (JEMA) The Japanese Electric Wire & Cable Maker’s Association (JCMA) Manufacturer’s Standards Any other internationally recognized Standard, if applicable
The codes and standards applicable to individual piece of equipment will be available in detailed specification drawings which will be issued at detailed design stage after contract.
(2) Standard nominal system voltage The nominal system voltage for MHI supplied equipment (MCCs, DBs, DC
system, motors for GT, ST and Generator auxiliaries and Lighting for GT & ST Package and Turbine Control Package) will be as follows:
1) AC Low voltage bus : 400 V, 3 phase, 4 wire, 50 Hz 2) DC voltage : 220 V 3) AC distribution board : 400 V, 3 phase, 4 wire; 230 V(Bus : 240V), 1 phase, 2 wire,
50 Hz
ELECTRICAL SYSTEMS
MITSUBISHI Bangladesh Ashuganj CCPP Specification No. MP-A2292
6-2 This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
6.2 TURBINE CONTROL PACKAGE
6.2.1 GENERAL
(1) In general, the electrical and control equipment will be pre-installed inside the specially prepared steel enclosure at factory, which will be transported and placed on foundation at site. For One (1) Single Shaft Turbine Generator Unit, MHI will provide three (3) package enclosures.
6.2.2 SPECIFICATION OF PACKAGE ENCLOSURE
(1) General The enclosure will be designed for outdoor (or indoor) installation and the enclosure will be installed adjacent to each Single Shaft Unit. A concrete foundation, stairs, handrails and platform will be provided by the EPC contractor.
(2) Enclosure The enclosure will be provided with door at both ends for access, and air conditioners are provided to maintain the temperature suitable for the equipment and systems in the enclosure. Interior lighting will be provided for operation and maintenance. And at appropriate locations, convenient receptacles will be provided. Exit sign lamps will be provided near doors for escape in emergency. Stand-by emergency lighting fixtures with self-contained one (1) hour battery will also be provided.
The door will be provided with “Anti panic handle”, and therefore it can be opened with single action from inside of the package enclosure for operator’s escape when emergency.
6.2.3 Equipment installed in Turbine Control Package
MHI will provide the Turbine Control Packages which will house the following electrical and control equipment required for the operation for the turbine and
ELECTRICAL SYSTEMS
MITSUBISHI Bangladesh Ashuganj CCPP Specification No. MP-A2292
6-3 This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
generator set, except for BOP systems such as cooling water, compressed air system, etc.
a. Turbine Motor control center (Normal MCC and Essential MCC)
b. Turbine DC motor starter
c. Turbine DC battery and charger
d. Turbine control system
e. Turbine interlock panel
f. Turbine supervisory instrument panel (TSI)
g. Turbine engineering and maintenance station (EMS), combustion pressure fluctuation analyzer server (CPFA server) desk and Local Turbine operator station (local OPS)
h. Generator control panel (GCP)
i. Generator protection relay panel (GRP)
j. Generator AVR panel (AVR)
k. Air conditioner
l. Fire fighting including smoke type fire detectors and portable fire extinguisher
Above-mentioned equipment will be arranged in three (3) enclosures for each Single Shaft Unit. The foundation of Turbine Control Package will be provided by the Civil contractor (others). The typical layout drawing is enclosed herein. Please refer to “Layout Drawing for GT Control Package”, Dwg. No. PE60-500. Other electrical/control equipment in MHI scope listed below will have to be installed by the EPC contractor in the building and/or room prepared by the EPC contractor. Power feed to these also to be done by the EPC contractor.
in Relay room (air-conditioned):
• SFC control panel • SFC switch circuit control panel
ELECTRICAL SYSTEMS
MITSUBISHI Bangladesh Ashuganj CCPP Specification No. MP-A2292
6-4 This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
in Turbine building: • Generator excitation transformer • Generator excitation cubicle • SFC transformer • SFC cubicle • SFC start-up switch board* • Seal oil control panel
in CCR (air-conditioned):
• Turbine operator station (OPS) • Combustion pressure fluctuation analyzer
(CPFA) and data management PC (MNG) • Accessory station (ACS) • OPC server
Abbreviations; SFC : Static Frequency Converter CCR : Central Control Room OPC : Protocol of Microsoft
* Note; “SFC start-up switch board” will not be necessary if the MHI scope is only one (1) set of turbine and generator set.
Scope of these panels and equipment may be changed as necessity for the specific project. Detailed scope and required installation condition are described in other section in our proposal.
6.2.4 MOTOR CONTROL CENTER (MCC)
(1) Motor control center (MCC) is provided for control and operation of Turbine and Generator auxiliaries. For each Single Shaft Unit, one Normal MCC and one Essential MCC will be provided. During plant normal operation, both Normal & Essential MCC will be fed with normal power, and when normal power is failed, emergency power source shall feed to the Essential MCC for the unit safe shut down. All essential auxiliaries and loads are grouped and fed from Essential MCC. And both, normal & essential power source for MCC will be provided by EPC (Others). MCC will be applied for the motors up to 90 kW.
(2) MCC will be designed for indoor installation, and will be metal enclosed and
ELECTRICAL SYSTEMS
MITSUBISHI Bangladesh Ashuganj CCPP Specification No. MP-A2292
6-5 This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
free standing. Horizontal and vertical bus will be adequately rated. Wiring troughs will be provided. Each motor feeder in MCC will have combination starters with molded case circuit breaker (MCCB), magnetic contactor and thermal over-load relay. Indication will be provided at the front of the panel for the indication of motor run/stop. Power feeder circuits will be provided with thermal-magnetic MCCB’s. All MCCBs will have sufficient current rating and interrupting capacity as required for the intended application.
(3) DATA Applicable Standard : IEC Type : Indoor, metal enclosed, free standing type Rated Voltage : 400V, 3 Phase, 4 Wire Rated Frequency : 50 Hz Short circuit rating : 50kA Protection degree : IP 31
6.2.5 AC DISTRIBUTION BOARD
AC Distribution Board provides 400-230 V AC power supply for the turbine
control equipment, generator control/protection equipment, lighting inside GT & ST package and Turbine Control Package, cubicle space heating, air conditioning for the equipment in Turbine Control Package.
DATA: Applicable Standard : IEC Type : Indoor, metal enclosed, free standing Rated Voltage : 400-230 V, 3 phase, 4 wire Rated Frequency : 50 Hz Rated bus current : As per load requirement Protection Degree : IP 31
6.2.6 DC SYSTEM FOR TURBINE AUXILIARIES
(1) The Turbine Generator unit is provided with a DC system in order to supply
ELECTRICAL SYSTEMS
MITSUBISHI Bangladesh Ashuganj CCPP Specification No. MP-A2292
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DC control power to Turbine control system, Generator protection/control system and emergency DC motors.
(2) Configuration
Each DC system will consist of 2 x 100% battery chargers, 1 x 100% Valve Regulated Lead Acid (VRLA) battery bank, distribution panel and DC motor starter panel. During normal operation of the plant the battery chargers will be supplying DC loads and float charging the battery. Upon failure of AC power, the battery will feed the loads for safe shut-down, by discharging. Battery capacity will be calculated based on IEEE 485 standard. The battery back-up time will be 1 hour. Battery will be installed in metallic self-supporting rack for indoor installation. Battery chargers will be supplied in free standing cubicles with control and indications in front of the cubicles. Battery and chargers will be sized adequately to supply intended loads.
(3) DATA For Battery:- Battery type : Valve Regulated Lead Acid (VRLA) type
(Calcium) Nominal voltage : 220 V DC Capacity : As per load requirement Discharge period : 1 hour Quantity : 1 x 100% Installation : Metallic, self-supporting racks/steel trays,
indoor. For Battery Charger:- Type : Metal-enclosed free standing, indoor type Protection Degree : IP31 Input Voltage : 400 V AC, 3 Phase, 4 wire, 50 Hz Output Voltage : 220 V DC Charging modes : Float/Equalize Re-Charging time : Will be determined after the determination of
ELECTRICAL SYSTEMS
MITSUBISHI Bangladesh Ashuganj CCPP Specification No. MP-A2292
6-7 This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
the battery capacity Quantity : 2 x 100% charger
6.2.7 DC DISTRIBUTION BOARD
The 220V will feed control power to the Turbine Control system, Generator protection/control panel.
Applicable Standard : IEC Type : Indoor, metal enclosed, free standing Rated Voltage : 220 V DC Rated bus current : As per load requirement Protection Degree : IP 31
6.2.8 DC MOTOR STARTER PANEL
(1) 220V DC motor starter panel will provide power supply to emergency DC motors and DC control power of Turbine and Generator auxiliaries.
(2) Configuration
Each motor starter will consist of MCCB, magnetic contactor, thermal over load relay and resister-timer circuit to limit the starting current within tolerable limits. These motor starters will be controlled by receiving remote on/off commands from Turbine control system and Generator Seal oil control system. Feed back signals regarding motor on/off and control from remote available signals will be provided to Control System as required.
(3) Data Applicable Standard : IEC Type : Indoor, metal enclosed, free standing Rated Voltage : 220 V, DC Protection degree : IP 31
6.2.9 LIGHTING AND RECEPTACLE
ELECTRICAL SYSTEMS
MITSUBISHI Bangladesh Ashuganj CCPP Specification No. MP-A2292
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(1) General
Lighting fixtures, convenient receptacles and lighting cables within the Turbine Control Package will be provided. The lighting fixtures and accessories will be designed, manufactured and installed within the package. The average illumination level in the Turbine Control package will be 200 lux.
(2) Lighting power will be fed from AC Distribution Board. Fluorescent lamps of suitable type will be provided. Some fluorescent lamps will be provided with self-contained one (1) hour battery as the emergency lighting.
6.2.10 AIR CONDITIONING SYSTEM
Each Turbine Control Package will be provided with two (2) sets of air-conditioners. One (1) set of air-conditioner has the capability to maintain the temperature in the Turbine Control Package at the designed temperature.
Designed inside temperature : 25 oC (dry bulb) Outside temperature : 5 oC ~ 40 oC (dry bulb)
6.2.11 FIRE DETECTING SYSTEM
(1) Fire Detecting System with detectors and alarm will be provided for
connection to gas turbine fire alarm panel.
(2) Each package will be provided with portable fire extinguishers (manual operation) to put off the fire.
6.2.12 CABLES in Turbine Control Package
MHI will provide the cables within the Turbine Control Package. The specification of power, control and instrument cables supplied for the inside of the Turbine Control Package will be as follows:
Power cable : XLPE insulated and flame-retardant PVC
ELECTRICAL SYSTEMS
MITSUBISHI Bangladesh Ashuganj CCPP Specification No. MP-A2292
6-9 This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
oversheathed Power cable. Control cable : XLPE insulated and flame-retardant PVC
oversheathed control cable Instrument cable : PVC insulated and flame-retardant PVC
oversheathed instrument cable with copper tape shielding.
Special cable : The specification will be submitted only for information during detailed engineering stage.
Note: - Flame retardant will be applied IEC 60332-3 category A or equivalent. - Conductor size may be applied according to JCMA standard, such as 0.75
sq.mm., 1.25 sq.mm., 2 sq.mm. and 3.5 sq.mm. - The cables which are connected with the equipments/devices outside the
Turbine Control Package are not in the scope of supply. - In gas turbine package and steam turbine lagging, the insulation and sheath of
the cables will be ETEF (Ethylene Tetrafluoroethylene Copolymer) considering high temperature condition.
6.2.13 GROUNDING
All electrical equipment and metallic structures of the Turbine Control package will be connected to the grounding network. For this purpose, two (2) grounding terminals will be provided for one container. One of them will be used for grounding of the control equipment in the Turbine Control Package and the other will be used for grounding of the electrical equipment. However, grounding cable connection up to ground terminal connection from the main ground grid will be provided by EPC (Others).
6.2.14 FOUNDATION OF TURBINE CONTROL PACKAGE
The foundation will be designed and provided by EPC (Others). The conceptual design is shown on the attached drawings Dwg.no.PE60-600.
ELECTRICAL SYSTEMS
MITSUBISHI Bangladesh Ashuganj CCPP Specification No. MP-A2292
6-10 This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
6.3 MOTORS FOR TURBINE AND GENERATOR AUXILIARIES
Rating and specifications of the motor for turbine and generator auxiliaries are as follows:
Type of AC motor : Induction Motor Type of AC motor rotor : Cage Rated voltage
-AC motor (MV) : 6600V (if in scope) -AC motor (LV) : 400 V, 50 Hz -DC motor : 220V
Insulation class : Class F (temperature rise B) (some small capacity motors, Class E / manufacturer’s standard)
Enclosure Protection : Generally IP44 (Totally enclosed type) Method of starting:
-AC motor : DOL -DC motor : Resistor
Starting current of motor -MV motor : Less than 650% of rated current
(if in scope) -LV motor : According to manufacturer’s standard
Running duty : Continuous Service factor : 1.0 Codes and standards IEC, except for the following case: Auxiliary motors purchased from Japan will conform to the following standards: General performance : IEC60034-1 Dimension : IEC60072-1&2 Material : JIS Test : JEC 2137, JEC 2120 Explosion proof : JIS C0905 / RIIS
Tolerance specified in JEC-2137 and JEC2120 will be applied for motor
ELECTRICAL SYSTEMS
MITSUBISHI Bangladesh Ashuganj CCPP Specification No. MP-A2292
6-11 This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
characteristics. Motors purchased from other countries will comply with the originating
country standard.
Reference Drawings: Drawing Dwg. Reference 1. Typical Key Single Line Diagram Turbine Control
Package PE60-100
2. Layout drawing of Turbine Control Package PE60-500 3. Foundation of Turbine Control Package
(Single-shaft configuration) PE60-600
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.1 GENERAL
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
7 - 1 - 1
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7.1 GENERAL
The Instrumentation and Control (I&C) equipment of the Power Train is
standardized to meet the equipments requirements. The I&C System will be
designed in the following manner:
(1) The Turbine Control System will be provided for the operation of the Gas
Turbine (GT) and Steam Turbine (ST). Supervision and monitoring
function and the type and number of measuring points adequately fulfill the
requirements of the turbines.
(2) The control and supervision will be performed by the multiple process
station (MPS) that incorporates modern microelectronics technology and
plant control technology.
(3) The Turbine Control System will provide modulating control, digital
(on/off) control, monitoring, alarming and indication for the turbines.
(4) The proposed Turbine Control System is Mitsubishi’s control system,
DIASYS Netmation, which will be of an advanced distributed configuration.
The turbine control system configuration is shown on the attached drawing
below:
U-F2010: Turbine Control System Configuration.
(5) The Turbine Control System will be composed of redundant
microprocessors, and each control system will be interfaced with the other
control system (called ‘DCS’ hereinafter) by a redundant communication
datalink (OPC A&E1.0 / DA1.0 or 2.0).
(6) The Turbine Control System including Turbine Supurvisory Instrument
Panel and Turbine Interlock Panel will be installed in Turbine Control
Package.
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.1 GENERAL
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
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(7) Centralized supervision and automatic operation of plant start-up, shutdown,
and normal load changing can be performed by the use of operator stations
supplied by Buyer.
(8) Hardwired relay logic based turbine protection system which is proven and
standardized system based on rich field operational experiences will be
proposed.
(9) Hardwired switches for manual emergency gas turbine/steam turbine trips
will be mounted on the operator control desk in the main control room
(MCR) by Buyer.
(10) Measuring instruments will be provided as per following design
philosophy.
・ For modulating control, basically single sensor will be provided. Dual
redundant sensors will be provided for some critical control loops. At
each measuring point, sensor will be common for both control and
monitoring function.
・ In case that redundant analog sensors are provided for protection, they
will be also used for both control and monitoring function.
・ For the unit trip function, basically triple redundant sensors with 2 out of
3 voting logic will be provided.
・ Instruments will be provided as per manufacturer’s standard design.
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.2 SCOPE OF SUPPLY
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
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7.2 SCOPE OF SUPPLY
The following Control and Instrumentation System are included in the scope:
No. Equipment and Works Qty Remarks 1 Turbine Control System (TCS)
- Duplicated microprocessors - Duplicated network interface module - Single PI/O system (Servo modules for fuel
control valves are duplicated)
1 set
2 Local Turbine Operator Station (OPS) in Turbine Control Package - PC with VDU, QWERTY keyboard and mouse
1 set 21 inch color LCD
3 Combustion Pressure Fluctuation Analyzer (CPFA) in Turbine Control Package - Server (PC)
1 set/GT
4 Engineering Maintenance Station for TCS (EMS) in Turbine Control Package - PC - VDU, QWERTY keyboard and mouse
(common use with CPFA Server) - Color inkjet printer (common use with OPS)
1 set 21 inch color LCD
5 Instruments for Gas Turbine
1 set/GT As for detailed quantities, please refer to P&ID’s
6 Instruments for Steam Turbine
1 set/ST As for detailed quantities, please refer to P&ID’s
7 Cabling and instrumentation material between field equipment and local junction boxes inside GT enclosure. - Conduit, tubing, fitting, cable and raceway
1 set/GT
8 Cabling and instrumentation material between field equipment and local junction boxes inside ST lagging. - Conduit, tubing, fitting, cable and raceway
1 set/ST
9 Turbine Operator Stations (OPS) in MCR - PC with VDU, QWERTY keyboard and mouse
1 set 21 inch color LCD
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.2 SCOPE OF SUPPLY
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
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No. Equipment and Works Qty Remarks 10 Color laser printer in MCR
1 set
11 Engineering Maintenance Station (EMS) in MCR - PC with VDU, keyboard and mouse - Color laser printer
1 set 21 inch color LCD
12 Accessory Station (ACS) in MCR - Duplicated computer package
1 set
13 Data Management PC (DMPC) in MCR - PC with color VDU, keyboard and mouse - Data storage to external media - Router
1 set
14 CPFA monitor in MCR - Client PC with color VDU, keyboard and
mouse
1 set/GT
15 Special Monitor for Combustion Turning (SMCT) in MCR - Laptop PC - Inkjet printer
1 set/GT
16 OPC Server in MCR - Dual redundant interface with DCS - Duplicated computer package - OPC A&E1.0/DA1.0 or 2.0 - Router
1 set
17 Turbine Interlock Panel - GT protection system - ST protection system
1 set Hardwired relay logic circuit
18 Turbine Supervisory Instruments
1 set As for detailed quantities, please refer to Section 7.9.1.
19 Combustible Gas Detectors
1 set/GT As for detailed quantities, please refer to Section 7.9.2.
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
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7.3 CONTROL FUNCTION
The TCS consists of a duplicated microprocessor based controller, single I/O (Servo
modules for fuel control valves & ST governor valves are duplicated) and CPFM &
CPFA system. All the auto/manual operations are available on OPS located in
Turbine Control Package and Main Control Room (MCR). The TCS is of an
advanced distributed configuration and its functions are explained in this section.
7.3.1 GAS TURBINE CONTROL
(1) Automatic Load Regulation (ALR)
The governor free operation or the load control operation is available based on
ALR LOAD SET from the Automatic Power Regulation (APR) control in DCS
(supplied by Buyer) or GT-OPS. In the ALR operation mode, the GTC changes
the speed and the load reference with the selection of control mode
(GOVERNOR mode or LOAD mode).
(a) Governor Free Operation (GOVERNOR mode)
When GOVERNOR is selected for CONTROL MODE, the TCS adjusts the
speed reference so that the Generator output is the same as the ALR LOAD
SET. The droop speed control is available based on the adjusted speed
reference. Simultaneously, the TCS adjusts the load reference to be the
same as the Generator output plus some bias. Then, the governor control is
available and the load control restricts the excessive increase of the Generator
output if a sudden decrease of grid frequency occurs.
(b) Load Control Operation (LOAD mode)
When LOAD is selected for CONTROL MODE, the TCS adjusts the target
load to be the same as the ALR LOAD SET. The load reference is changed
to the target load under the predetermined rate. Simultaneously, the TCS
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
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adjusts the speed reference so that the Governor Control Signal Output
(GVCSO) is the same as the fuel Control Signal Output (CSO) plus some
bias.
(2) Speed Control
Speed control is used for synchronization to the grid and for the Generator’s
output control under the speed droop after synchronization. At the rated speed
and unloaded condition, the speed reference is changeable by a signal from the
auto synchronous system (ASS) or the manual command (GOVERNOR
RAISE/LOWER) from the OPS. In case of ALR, the speed reference is shifted
according to the ALR LOAD SET from DCS under the predetermined loading
rate. On the other hand, the speed reference is changeable according to the
manual command (GOVERNOR RAISE/LOWER) from the OPS while ALR is
off and the GOVERNOR is selected for Control Mode. GVCSO is the result of
proportional control calculation under the droop characteristic by following
formula.
GVCSO = K (Speed reference – Actual speed) + Bias
(3) Load Control
The target load is changed according to the ALR LOAD SET from DCS, while
the ALR is selected. On the other hand, the target load is changeable according
to the manual command (LOAD RAISE/LOWER) from the OPS while the ALR
is off and LOAD is selected for Control Mode. The load reference is shifted to
the target load under the predetermined loading rate. The loading rate will be
determined by a function of the load to avoid over firing of the combustor
(Loading rate with Reset wind up prevention Control Signal Output: LRCSO).
Load Control Signal Output (LDCSO) is the result of the Proportional and
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
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Integral (PI) control calculation whose input signal is the deviation between the
actual gas turbine generator output and the load reference. Furthermore, when
the governor free operation mode is selected, LDCSO is tracked to the value
which is the sum of fuel Control Signal Output (CSO) plus some bias for the
purpose of the operation as the load limitation under droop control.
(4) Temperature Control
Temperature control is used for the protection against excessive turbine inlet
temperature. Instead of turbine inlet temperature measurement, turbine exhaust
temperature is measured at two locations for the temperature control.
Thermocouples sense the Blade Path temperature, which is the gas temperature
just downstream of the turbine's final blades and the same numbers of
thermocouples with the combustors are furnished. Thermocouples sense the
well-mixed Exhaust Gas temperature. The exhaust gas temperature reference is
determined by a function of the combustor shell pressure and the blade path
temperature reference is determined by the exhaust gas temperature reference
plus some bias. This bias will be changed to avoid over firing of the combustor
(BPT bias control). The exhaust gas temperature reference is compared with
the average value of actual exhaust gas temperatures and the blade path
temperature reference is compared with the average value of actual blade path
temperatures. When the deviation of these two signals is positive, the PI
controller output signals (BPCSO and EXCSO) are tracked to the sum of fuel
CSO plus some bias to block against over-integration or integral wind up. If the
deviation becomes negative, the PI controller output signals are to cut back fuel
CSO until a positive deviation is reached.
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
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(5) Fuel Limit Control
The start up control demand signal is calculated as a function of combustor shell
pressure and turbine speed within the accelerating limit. The output of this
control function (FLCSO) is used to limit fuel flow.
(6) Minimum Selection Control
The control system selects the minimum of the control signals described above
(GVCSO, LDCSO, BPCSO, EXCSO and FLCSO) for the fuel control valve
positioning. The control output is also ensured for the “Minimum CSO
scheduler” which is the function of ignition flow, warm up, and minimum flow to
prevent flame loss.
(7) Fuel Transfer Control
Fuel transfer control is used for fuel changeover. The output of the minimum
select control, CSO is switched to either main fuel gas control signal output
(MFCSO) or sub fuel control signal output (SFCSO). If fuel gas is selected by
an operator, MFCSO is equal to CSO, and SFCSO is 0%. During fuel transfer
operation, MFCSO or SFCSO ramps up from 0% to CSO or ramps down from
CSO to 0% as per predetermined time schedule.
(8) Fuel Distribution Control
In the case of fuel gas firing, the output of the minimum selection control,
MFCSO is distributed to four CSO signals for pilot line, main-A line, main-B
line and tophat line in the fuel gas system.
Fuel gas pilot line : MFPLCSO
Fuel gas main-A line : MFMACSO
Fuel gas main-B line : MFMBCSO
Fuel gas tophat line : THCSO
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
MITSUBISHI Bangladesh Ashuganj CCPP
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In the case of fuel oil firing, the output of the minimum selection control, SFCSO
is distributed to two CSO signals for pilot line and main line in the fuel oil
system.
Fuel oil pilot line : SFPLCSO
Fuel oil main line : SFMCSO
Distribution ratio is determined based on CLCSO (Combustion Load Control
Signal Output), which is represented signal of turbine inlet temperature. CLCSO
is calculated in GTC based on the Inlet Guide Vane (IGV) position reference,
actual generator output and the compressor inlet air temperature. The
relationship between each CSO is shown as follows.
MFCSO = MFPLCSO + MFMACSO + MFMBCSO + THCSO
SFCSO = SFPLCSO + SFMCSO
(9) Fuel Flow Control
Distributed control signals, MFPLCSO / SFPLCSO, MFMACSO & MFMBCSO
/ SFMCSO and THCSO, are converted to each fuel flow demands by
predetermined function.
(10) Fuel Pressure Control
The differential pressure between inlet and outlet of each fuel flow control valve
shall be kept for constant value, so that fuel flow is proportional to CSO of each
flow control valve. The inlet fuel gas pressure of fuel gas flow control valves is
regulated by fuel gas pressure control valve.
The inlet fuel oil pressure of fuel oil pressure control valves is regulated by fuel
oil supply pressure control valve. The differential pressure between inlet and
outlet of each fuel oil flow control valve shall be kept, so that oil fuel flow is
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proportional to control signal output of each flow control valve. Pressure control
valves are controlled by PI-control for the differential pressure.
(11) Inlet Guide Vane (IGV) Control
The IGV controls the inlet airflow rate to the compressor to achieve high
efficiency at partial load.
(12) Combustor Bypass Control
In order to meet the NOx emission level, the combustor bypass valves are
controlled according to the actual turbine speed or CLCSO. The
opening/closing of the bypass valve varies the compressor outlet airflow to the
Combustors to maintain proper conditions (fuel to air flow rate ratio).
(13) Automatic Turbine Start-up / Shutdown Control (ATS)
ATS perform gas turbine sequence control by receiving kick signal from
automatic plant start-up / shutdown sequence control executed by DCS.
(a) Gas Turbine Start-up
• Spin (purge)
• Light off
• Speed control to the rated speed
• Loading up to the target load
(b) Gas Turbine Shutdown
• Unloading to the minimum load
• De-synchronization
• Cooling down
• Fuel shut down
(14) Fuel Gas Temperature Control
In order to obtain high thermal efficiency, fuel gas is heated by Fuel Gas Heater.
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(15) Load Run Back Control
The Load-Run-Back function is initiated by the following conditions in order to
avoid Combustor malfunction. The gas turbine load is decreased automatically
in the following situations:
• Combustion vibration pressure fluctuation is high
• Blade Path temperature variation is large
• Blade Path temperature trend change is large
• Generator winding temperature high
• Fuel gas supply pressure low
• Fuel gas temperature abnormal
• Evaporative Cooler pump stop
• Water injection abnormal
(16) Water Injection Control
In order to meet the NOx emission level during oil fuel operation, the water
injection flow is controlled according to generator output.
(17) CPFM & CPFA SYSTEM
CPFM: Combustion Pressure Fluctuation Monitoring system
CPFA: Combustion Pressure Fluctuation Analyzer system
(a) General
Automatic controller for combustion pressure fluctuation, CPFM & CPFA
System is an automatic tuning system designed to perform optimal operation
on the basis of a model constructed by modeling the combustion pressure
fluctuation characteristics of each individual combustor using combustion
pressure fluctuation and various plant operating data. The reliability of this
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
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system is enhanced by applying the method of multiple regression analysis in
modeling the combustion pressure fluctuation characteristics and also
conducting early detection of combustion pressure fluctuation and abnormality
diagnosis of combustion pressure fluctuation sensors.
CPFM System is a device for calculating three levels (pre-alarm, runback and
trip) based on the combustion pressure fluctuation peak value and the result of
Fast Fourier Transform (FFT) analysis calculated by special input modules for
the combustion pressure fluctuation sensors. The signals of pre-alarm and
runback command are transmitted to the TCS via Unit Network, and the
signals of trip command are transmitted to Unit Interlock Panel by hardwired
connection.
CPFA System is a computer device to calculate correction value for
combustion control (pilot fuel control or combustor bypass valve control) by
using the combustion pressure fluctuation and various plant process data.
CPFA stores historical data and performs multiple regression analysis by using
these data to gain correction value and transfers the calculated correction value
to the TCS via Unit Network.
CFPM & CPFA System is combined as a part of the TCS.
When the combustion pressure fluctuation level increases and reaches the
caution level or a symptom of combustion pressure fluctuation is detected,
correction operation is carried out in the direction in which to decrease
combustion pressure fluctuation. This correction operation is terminated
when the combustion pressure fluctuation level decreases to below the caution
level.
In case the combustion pressure fluctuation level increases with increasing
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
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load and rises up to the pre-alarm level or a symptom of combustion pressure
fluctuation is detected, correction operation is performed, and the load is
maintained until the combustion pressure fluctuation level decreases.
In CPFM & CPFA System, as a protection interlock of combustion pressure
fluctuation, CPFM performs a predetermined protective operation when the
combustion pressure fluctuation level exceeds the trip or runback value due to
sudden changes in operating conditions.
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
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Combustion pressure fluctuation
monitoring
Exceed an alarm or trip level?
Protection Interlock (Runback or Trip)
Exceed a caution alarm level? Correction operation
Exceed a pre-alarm level or detect a symptom?
Load up now?
Load hold
Correction operation
YES
YES
YES
Turbine Control System
CPFM CPFA
YESNO
Fig. 7-1 Fundamental flow of CPFM & CPFA System
Each function is independent. Therefore, the protection function by CPFM can operate even if a problem occurs in CPFA function.
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
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(b) Basic functional specification
CPFM & CPFA System is composed of the following functions, using the
method that automatically corrects control parameters with respect to the
changes in operation data:
(i) Plant data collection and analysis
(ii) Abnormality diagnosis of combustion pressure fluctuation sensors
(iii) Early detection of symptoms of combustion pressure fluctuation
(iv) Stable region estimation
(v) Automatic tuning (correction amount calculating)
(vi) Protection Interlock These functions serve to automatically estimate a stable operating point and
tune control parameters according to the combustion pressure fluctuation level
or NOx emission level. CPFM & CPFA System comprises TCS, CPFM and
CPFA as shown in Fig. 7-2.
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
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Fig. 7-2 Configuration of CPFM & CPFA
Measured Data (i.e. Temp., Press.)
Tuning Parameters
TCS
Plant Data
Gas Turbine
Control (i.e. Bypass valve)
Partial Over-All FFT Analyze Band Peak/Frequency High/Low Limit of Band Sensor Abnormal
Measured Data (Combustion Pressure
Fluctuation Sensor)
CPFA CPFM
Protection Interlock
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
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(c) Hardware specification
(i) CPFM
CPFM system consists of dual redundant CPU modules and special input
modules for combustion pressure fluctuation sensors.
Table 7-1 Specification of CPU module for CPFM Item Specification
CPU Hitachi SuperH RISC microprocessor SH-4 240 MHz Redundancy Duplicated OS Linux (realtime compatible) Memory 128MB, SDRAM with ECC Non-volatile memory 128MB compact flash Ethernet interface 100B-T×3ch
(ii) CPFA
Platform of CPFA is Personal Computer (PC). CPFA server will be
installed in Turbine Control Package, and CPFA client will be installed in
MCR will be provided to display the correction value calculated by CPFA
server.
Table 7-2 Hardware Specification of CPFA (server & client) Item Specification
OS Windows XP Professional English version CPU Pentium IV 2.4GHzMemory 1GB Hard Disk 160GBAccessories CD-RW (Internal)Network 100B-T×5chMonitor (for client) 20 inch color LCD (single)Peripheral (for client) Alphanumeric keyboard, Mouse
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
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(iii) Special Monitor for Combustion Tuning (SMCT)
One laptop PC will be provided and installed in MCR. SMCT will be used
to monitor the combustor pressure fluctuation during combustion tuning
only.
Table 7-3 Hardware Specification of SMCT Item Specification
OS Windows XP Professional English version CPU Core 2 Duo 2.4GHzMemory 1GB Hard Disk 60GBAccessories CD-RW (Internal)Network 100B-T×3chMonitor 14.1 inch TFT (laptop PC)
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
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7.3.2 STEAM TURBINE CONTROL
(1) Speed-Up Control
In a turbine start-up condition, the turbine speed is controlled by the High
Pressure-Stop Valve(s) (HP-SV control mode). A reference speed will be
calculated in a speed setting part that consists of a speed setter to set target speed,
a rate limiter to set the acceleration rate of speed, and an integrator to sum up rate
signal until output is equal to target speed.
(a) Target Speed
The TCS selects one of three predetermined target speeds:
• 2,000 rpm Heat soak speed
• 2,820 rpm Valve transfer speed
• 3,000 rpm Rated speed
NOTE: The heat soak speed will be changed if it is within the critical
speed range.
(b) Speed Acceleration Rate
The STC selects one of three predetermined speed acceleration rates:
• SLOW 75 rpm/min.
• MIDDLE 150 rpm/min.
• FAST 300 rpm/min. (normal operation)
(c) Control
The HP-SV controller will execute proportional control in accordance with
the difference between the reference speed and actual speed.
This control signal is delivered to each HP-SV.
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
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(d) Program Go/Hold Operation
After setting a speed target and an acceleration rate, the turbine begins to
start. When the turbine speed reaches the target speed, it will be held at
the target speed.
During speed-up, the turbine speed is held at the present speed by
operating PROGRAM “HOLD”.
The turbine is restarted by operating PROGRAM “GO”.
(2) Close All Valves
This function will close the high pressure stop valves (HP-SV), high pressure
control valves (HP-CV), intercept valves (ICV) and low pressure control valve
(LP-CV) gradually to protect the steam valves seats in case of turbine stop or rub
check.
(3) Valve Transfer (HP-SV/HP-CV)
After rated turbine speed has been reached, turbine control mode is transferred
from “HP-SV control mode” to “HP-CV control mode”.
At first, HP-CVs will be closed gradually from full open position to no-load
position. Then, HP-SVs will be opened gradually from a few percent open
position to a full open position. During this operation, turbine speed will be
kept constant.
(4) Start up Program Open Control
After rated speed, HP-CV and ICV open up to full open position at
predetermined rate programmably. ICV positions as per HP-CV position.
Open rate is settled according to mode selection (Hot, Warm, Cold). HP and IP
TBVs are thrown into control pressure and gradually close to steam generated by
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
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HRSG. LP-CV opens up to full open position at predetermined rate
programmably.
(5) Pressure Control
After initial load operation, HP/IP pressure control mode is thrown into the
HP-CV/ICV control by operating HP/IP Pressure Control “IN”. At that time,
the HP/IP pressure reference is set up at the minimum required pressure.
According to the load-up of Steam Turbine from the initial load, the HP/IP
pressure reference is set up lower than the actual HP/IP pressure and HP-CV/ICV
is full open under normal operation.
After throwing the HP-CV/ICV control into HP/IP pressure control mode, LP
pressure control mode is thrown into the LP-CV control by operating LP
Pressure Control “IN”. The LP pressure reference is usually set up at the
minimum pressure and LP-CV is full open under normal operation after steam
turbine load-up.
(6) Shutdown Program Close Control
All ST control valves close at predetermined rate programmably like the start up
program control. At first LP-CV closes to the position which keeps minimum
cooling steam for ST blade. And then HP-CV and ICV close to full close position
at predetermined rate. LP-CV fully closes at turbine stop.
In case temperature force to ST occurs during the shutdown program close
control, they keep each position at the time to prevent the temperature force from
increasing.
(7) Overspeed Protection Control (OPC)
OPC will be actuated for prevention of an over speed trip. OPC closes HP-CV,
ICV and LP-CV when one of the following situations occurs.
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
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Fig.7-3 OPC block diagram
(a) Turbine speed exceeds 107.5% of rated speed.
(b) Disconnection from the grid when the plant output is over the determined
generator output. (Signals of disconnection from the grid will be provided by
others.)
(c) Fast cut back when the plant output is over the determined generator output.
Function block Element
H High monitor
FX Polyline function
OFD Off time delay
TDW Time delay wipe out
AND logic
OR logic
Turbine speed
Generator output
Generator breaker OPEN
Detection of FCB
>107.5%
OFD FX H
H
TDW
OPC
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
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(8) Valve Closing Test
The valve test is performed for the purpose of confirming the safety performance
by partially closing a tested valve during load operation. Testing Valves are
divided into 5 groups as HP-SV, HP-CV, Reheat Stop Valve (RSV), ICV and
LP-SV/LP-CV. For each group, operation commands such as “ON” and
“RELEASE” are reserved. Test operations are as follows:
(a) Set “ON” on the VDU. The valve test is then started, and the Valve Test
Closing Bias is added to the position demand of the tested Valve with a
ramp function or equivalent. Thus, the tested valve is gradually closed.
(b) As soon as the test valve is closed to the predetermined partial opening,
the valve position will return to a fully-open position gradually.
(c) If the operator sets “RELEASE” during the test, the test is aborted and the
testing valve will return to a fully-open position gradually.
Fig.3-3 Valve closing test
“RELEASE”▽
OPEN
CLOSE
“ON” ▽
the tested valve position
Fig.7-4 Valve closing test
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.3 CONTROL FUNCTION
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(9) Stress Control
The turbine stress control function minimizes the turbine life expenditure due to
thermal stresses of HP steam turbine rotor.
The thermal stress is calculated by using HP inlet steam temperature and HP inlet
steam pressure. When an excessive stress level is calculated, the ‘Loading rate’
(which is the output of stress control) will be held. Hence, the Buyer’s DCS can
suppress the GT loading rate as per the ST thermal stress condition. The next
figure shows a block diagram of stress control.
HP Inlet Steam Press.
Actual Speed
Fig.7-5 Stress Control
STRESS LEVEL
EXCESS STRESS LEVEL
Load Reference HOLD (DCS)
Rotor Stress Calculation
MonitorHP Inlet Steam Temp.
(OPS)
(OPS)
Stress Control function
Stress Control
OUT IN
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.4 PROTECTION SYSTEM
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7.4 PROTECTION SYSTEM
7.4.1 GAS TURBINE PROTECTION
The Gas Turbine protection functions are included in the Gas Turbine Interlock
Panel. A de-energized-to-trip (fail safe in case of power failure) solenoid valve is
provided as a standard design. The gas turbine trip conditions are as follows:
1 Manual emergency trip 2 Fire 3 Lube oil pressure low 4 Control oil pressure low 5 Shaft vibration high 6 GT-ST speed deviation high 7 Combustion pressure fluctuation high 8 Blade path temperature variation large 9 Blade path temperature high 10 Exhaust gas temperature high 11 Fuel gas supply pressure low 12 Bleed valve abnormal 13 Starting device trip 14 GT overspeed trip 15 ST overspeed trip 16 Exhaust gas pressure high 17 Fuel control valve abnormal 18 Low frequency 19 Condenser vacuum low 20 Thrust bearing wear 21 LP turbine exhaust temperature high 22 LP turbine last stage stational blade metal temp high 23 Electrical fault (from Generator Protection Relay) 24 Turbine Control System failure 25 External Request Trip (from DCS)
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26 Flame loss 27 Gas leak detection trip 28 Inlet air filter differential pressure high 29 TCA cooler drain level high 30 TCA cooler feed water flow low 31 FGH drain level high 32 Main fuel oil pump trip 33 Fuel transfer load off
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.5 OPERATOR STATION(OPS)
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7.5 OPERATOR STATION (OPS)
Standard types of Human Machine Interface will be provided in Turbine Control
Package and Main Control Room. The following functions are included for
Operation and Maintenance for TCS.
(1) Monitoring/Operation for Gas Turbine and Steam Turbine
(a) Graphics (system diagram display)
(b) Control loop plate
(c) Trends
(d) Alarms
(2) Maintenance for TCS
(a) System status display
(b) Control logic monitoring and parameter tuning
Table 7-4 Specification of OPS hardware Item Specification
Manufacturer MHI Model PCLTM01 OS Windows XP Professional English version CPU Pentium IV 2.4GHz Memory 1GB Hard Disk 80GB Monitor 20 inch LCD Resolution 1280×1024 Color 16,700,000 Accessories 3.5FD, CD-RW / DVD (Internal) Network 100B‐TX×3ch Key board Alphanumeric keyboard
(OPS dedicated keyboard will not be provided)
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.6 ENGINEERING MAINTENANCE STATION(EMS)
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7.6 ENGINEERING MAINTENANCE STATION (EMS)
Engineering Maintenance Station (EMS) provides the ability to perform operations
including:
(1) Modification and creation of control logic on TCS
(2) Design of graphic displays
(3) Setting of OPS and ACS
(4) Any change up to and including configuring the entire system
EMS prepares elements for performing data execution and control and monitoring of
OPS and IEC-compliant function blocks, making it possible to configure an entire
system from a single station.
Table 7-5 Hardware Specification of EMS Item Specification
Manufacturer MHI Model PCLTM01 Redundancy Single OS Windows XP Professional English version CPU Pentium IV 2.4GHzMemory 1GB Hard Disk 80GBMonitor 20 inch LCDAccessories 3.5FD, CD-RW / DVD (Internal)Network 100B-T×3chKeyboard Alphanumeric keyboard
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.7 ACCESORY STATION(ACS)
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7.7 ACCESORY STATION (ACS)
The ACS is a system equipped with large hard disk for storing and managing large
amounts of plant data.
Functions of ACS are followings;
・Long term data management
・Long term storage of process data
・Reports
・Logs
・Printer server
Table 7-6 Hardware Specification of ACS Item Specification
Manufacturer MHI Model PCLTM01 Redundancy Duplicated OS Windows XP Professional English version CPU Pentium IV 2.4GHzMemory 1GB Hard Disk 80GBMonitor 20 inch color LCDAccessories 3.5FD, CD-RW / DVD (Internal)Network 100B-T×3chKeyboard Alphanumeric keyboard
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.8 DATA MANAGEMENT PC(DMPC)
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7.8 DATA MANAGEMENT PC (DMPC)
The Data Management PC (DMPC) is a Windows-based PC to export the plant data
from other PC to removable media such as USB memory.
For security, unused USB ports and unused Ethernet ports are locked, and taking out
data from each PC except the DMPC by using a removable media such as USB
memory and CD-R is forbidden. The communication from each PC to the DMPC is
forbidden by using the Router, and the communication from the ACS to the DMPC
is permitted by using FTP service. The communication from the DMPC to each PC
is forbidden.
The ACS automatically sends the data to the DMPC by FTP communication, and the
data can be taken out from the DMPC by using a removable media such as USB
memory and CD-R.
Table 7-7 Hardware Specification of Data Management PC Item Specification
Manufacturer MHI Model PCLTM01 Redundancy SingleOS Windows XP Professional English version CPU Pentium IV 2.4GHzMemory 1GBHard Disk 80GBMonitor 20 inch color LCD Accessories 3.5FD, CD-RW / DVD (Internal) Network 100B-T×3ch Keyboard Alphanumeric keyboard
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.9 MACHINERY MONITORING SYSTEM
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7.9 MACHINERY MONITORING SYSTEM
7.9.1 TURBINE GENERATOR SUPERVISORY INSTRUMENT
The turbine generator supervisory instrumentation system will be provided for
monitoring the machine variables necessary for proper operation of the turbine
generator.
The turbine generator supervisory system will be connected to TCS for monitoring
purposes, including displays on VDU’s and logging and data storage on ACS.
All primary detectors, monitors, alarm contacts, wiring, cable, interconnections, and
other accessories required for a complete installation will be provided.
The monitors will provide analog outputs (4-20 mA dc) and contact outputs for alarm and
trip functions. The instruments in the following table will be provided.
(1) For Gas Turbine (a) Shaft speed 6 pcs / GT (for control and protection)
(b) Shaft vibration (eddy-current type, X-Y) 5sets / GT&GEN(2 pcs for each bearing)
(c) Zero speed 1 pc / GT
(d) Key phaser 1 pc / GT
(2) For Steam Turbine (a) Shaft speed 6 pcs/ ST (for control and protection)
(b) Shaft eccentricity 1 pc/ ST
(c) Shaft vibration (eddy-current type, X-Y) 2 sets/ ST (2 pcs for each bearing)
(d) Shell expansion 1 pc/ ST
(e) Shell/rotor differential expansion 2 pcs / ST
(f) Shaft axial position 3 pcs / ST
(g) Key phaser 1 pc / ST
(h) Zero speed 2 pcs / ST
(i) SSS clutch shrinkage 1pc / ST
(j) SSS clutch disengage 1pc / ST
(k) SSS pinion clutch engage 1pc / ST
(l) SSS pinion clutch disengage 1pc / ST
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.9 MACHINERY MONITORING SYSTEM
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
7 - 9 - 2
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
7.9.2 COMBUSTIBLE GAS DETECTORS
(1) Inside GT enclosure
Gas detectors for GT enclosure will be provided. Those are to detect leakage in
the GT enclosure at the GT enclosure ventilation fan outlet. Three (3) detectors
will be provided and used for GT trip function.
(a) GT enclosure 3 pcs / GT
(2) Inside GT fuel gas unit
Gas detectors for GT fuel gas unit will be provided. This is to detect leakage in
the GT fuel gas unit at the GT fuel gas unit ventilation fan outlet. One (1) detector
will be provided and used for alarm function.
(a) GT fuel gas unit 1 pc / GT
(3) GT exhaust duct
To detect the inflammable gas in the gas turbine exhaust duct, one (1) detector
will be provided. As this signal will be used only for startup condition, one
detector will be provided for the point. This condition is to prevent back firing in
the gas turbine during ignition period.
(a) GT exhaust duct 1 pc / GT
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.10 FIELD INSTRUMENTATION
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
7 - 10 - 1
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
7.10 FIELD INSTRUMENTATION
The field instrumentation work applied for GT enclosure inside, ST lagging inside
and some factory fabricated skids inside (Fuel gas unit, Fuel oil unit, etc.) are
standardized. Each item of field instrumentation materials and design philosophy,
etc. is as follows;
(1) Cable
・Analogue Signal Circuit(1)・・・・for transmitter, flame detector, intrinsically
safe circuit, etc.
600V copper conductor ETFE insulated overall copper braid shielded and
ETFE sheathed instrument cable (ETET-S)
・Analogue Signal Circuit(2)・・・・for LVDT, RTD
600V pair/triad type copper conductor ETFE insulated individual pair/triad
copper braid shielded and ETFE sheathed instrument cable (ETET/TS)
・Control Signal Circuit・・・・for press./level/limit switch/solenoid valve, etc.
600V copper conductor ETFE insulated and ETFE sheathed control cable
(ETET)
・Lighting Circuit
600V copper conductor ETFE insulated and ETFE sheathed power cable
(ETET)
・Thermocouple Circuit
EX type, ETFE insulated overall copper braid shielded and ETFE sheathed
thermocouple extension wire
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.10 FIELD INSTRUMENTATION
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
7 - 10 - 2
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
(2) Instrument Installation
・The local instrument (transmitter, switch, etc.) will be mounted on the local
instrument stanchion or open rack.
・The local instrument inside of the GT enclosure, some factory fabricated skids
will be mounted on the local instrument stanchion or supporting plate.
・The temperature gauge or pressure gauge will be installed on the process
directly.
(3) Impulse Piping (Tubing) Work
・Material
Stainless steel tube (1/2” OD x 0.065” wall thickness, SUS304) is applied in
general.
(4) Instrument Air Supply and Control Piping (Tubing) Work
・Material
Stainless tube, stainless pipe and flexible hose are applied in general.
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.11 DCS INTERFACE
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
7 - 11 - 1
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
7.11 DCS INTERFACE
The duplicated OPC servers (OPC A&E1.0/DA1.0 or 2.0) with routers are prepared
in the turbine control system. The communication interface to the Buyer’s DCS is
designed according to the following categories and philosophies. Refer to the
attached drawing U-F2010 also.
7.11.1 Hardwired Signal
The signals which require a fast response shall be hardwired. One category is the
signals for analyzing the cause of trouble (for example, each trip events within the
Steam turbine protection system). Dry contact signal of each trip event are
reserved for Buyer’s use, which are shown on the attached drawing U-F2010. The
signals will be inputs to SOE (Sequence of events recorder, which may be a part of
DCS) with other events from other equipment (for example, HRSG, BOP,
Substation and Generator).
7.11.2 Data Link Signal
Signals other than the above are assigned as data link signals. Assigned signals
depend on the philosophy of automation, control and reporting for operations and
maintenance.
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.12 CENTRAL CONTROL ROOM SPACE INFORMATION
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
7 - 12 - 1
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
7.12 MAIN CONTROL ROOM SPACE INFORMATION
Buyer will be required to prepare cabinets, desks and installation space for the
following equipment installed in Main Control Room. Required power feeders will
be prepared by Buyer also. Please refer to the following table for more detail
information.
MHI will provide the dedicated control equipment installed at MCR such as OPS,
ACS, EMS, Printer, and CPFA (Client PC).
The arrangement designing and erection work of these equipments will be done by
Buyer accordingly.
Table 7-8 Detail information of Turbine Control equipments in MainControl Room
DESCRIPTION Qty DIMENSION (mm) REMARKS
W D H
OPS desk 1/GT 800 800 700 Heat dissipation; 1.0kVA
ACS desk 1/Plant 1600 1200 700 Heat dissipation; 1.5kVA
EMS desk 1/Plant 1600 1200 700 Heat dissipation; 1.0kVA
Printer desk 1/Plant 1600 800 700 Heat dissipation; 1.0kVA
CPFA desk 1/GT 1000 1200 700 Heat dissipation; 1.0kVA
SMCT desk 1/GT 1000 1200 700 Heat dissipation; 1.0kVA
Data Management PC desk 1/Plant 1000 1200 700 Heat dissipation; 1.0kVA
OPC Server desk 1/Plant 1600 1200 700 Heat dissipation; 1.5kVA
Space for note PCs 1/GT 1200 800 700 Located on Temporary table
7 INSTRUMENTATION AND CONTROL SYSTEMS 7.13 ATTACHED DRAWING
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
7 - 13 - 1
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
7.13 ATTACHED DRAWING
The following drawings are attached hereinafter.
Drawing No. Drawing Title U-F2010 TURBINE CONTROL SYSTEM CONFIGURATION E-20420 TURBINE GOVERNOR CONTROL DIAGRAM(GT PORTION) (1/2), (2/2) E-20460 TURBINE GENERAL LOGIC DIAGRAM (1/2), (2/2) E-10420 TURBINE GOVERNOR CONTROL DIAGRAM(ST PORTION) E-20400 TURBINE UNIT INTERLOCK DIAGRAM
- DIVISION OF SCOPE OF SUPPLY FOR INSTRUMENTATION & CONTROL
DIVISION OF SCOPE OF SUPLY FOR INSTRUMENTATION & CONTROL
CONTENTS
I General
II Configuration of control system
III Scope of Cables & Piping
IV Supplemental Explanation
ATTACHMENTS
Attachment-1: List of I&C Engineering works
Attachment-2: Specific interface figures (Fig.1 - Fig.18)
-1-
I General
This document shows the scope of I&C engineering work and equipment applicable for contract execution.
Division of scope for I&C Engineering works are shown in Attachment-1.
The definition of the marks which are used in the relevant lists will be as below.
The marks and meaning
P : SK E&C
M : MHI
◎ : Prepare drawings and diagrams covering whole system
○ : Supply of necessary data/drawing
△ : Review and/or advice
II Configuration of control system
1. The configuration of control system is attached as “Fig-II-1: SCOPE OF SUPPLY FOR I&C and the
scope of equipment will be marked within the figure.
-2-
1
23
45
E P
Sensors such as transmitter, switch, gauge, thermocouple, speed pickup etc.
Sensors such as transmitter, switch, gauge, thermocouple etc.
E P
Sensors such as transmitter, switch, gauge, thermocouple, speed pickup etc.
M’s Portion Piping & Equipment (Internal of Steam Turbine Lagging)
E P
PLANT CONTROL SYSTEM- Plant Control System - HRSG Control System - Power Distribution Operation System - PI/O for Data Acquisition and Logging - Engineering Station - Gateway for auxiliary plant system
DRAWN
ISSUED
IH G FED CB A A3
MAIN CONTROL ROOM
FIELD
ELECTRICAL ROOM
Operator Console- VDU with keyboards
Printers - Report printers - Hard copiers
Local Control System for Auxiliary Plant System
Hardwired or Communication link
HARDWIRED EQUIPMENT ・ Operation switches ・ Emergency Trip PBs ・ Indicators, Recorders for BOP
etc.
DISTRIBUTED CONTROL SYSTEM (DCS)
M’s Portion Piping & Equipment (Internal of Gas Turbine Enclosure, Fuel Gas Unit, Purge Air Unit, Fuel Oil Unit, Flow Divider Unit, Lube Oil Reservoir Unit and Control Oil Unit)
TB
M’s HRSG Portion Piping & Equipment
TB
P’s Portion Piping & Equipment
Sensors such as transmitter, switch, gauge, thermocouple etc.
Turbine Interlock Panel
Note
P’s scope
M’s scope
Operator Station - LCD with keyboard - Printer
Turbine Control System
DIVISION OF SUPPLY & DESIGN FOR I&C
Turbine Supervisory Instrument Panel
Accessory Station - LCD with keyboard - Data Storage
OPC Server- OPC
A&E1.0/DA1.0 or2.0
OPC Client Engineering Maintenance Station - LCD with keyboard
DRAWING NO. Fig.II-1
Ethernet communication link
OPC communication link
(*1) (*1) Desks for equipment
supplied by M in Main Control Room shall be supplied by P
Generator Control System
E P
-3-
III Scope of Cables & Piping
(Note)
1) This chapter shows the division of design, supply & erection for cables and piping.
2) The designer & supplier of cables shall also design & supply installation materials, such as cable tray,
duct, fitting, cable gland and support, etc.
3) All of the site erection work shall be supplied by P.
4) The erection works of non-fabricated cables for M’s scope, that is, internal of GT enclosure, ST
lagging, etc. shall also be P’s scope.
In this case M will provide the drawing for the erection work as wiring connection at the terminal
boxes, location of instruments/terminal boxes etc.
1. Division of instrument cables design, supply & erection
(1) M’s scope
a. Design & supply for instrument cables internal of GT enclosure, Fuel gas unit, Purge air unit,
Fuel oil unit, Flow divider unit, Lube oil reservoir unit and Control oil unit.
Terminal points are terminal box mounted on base plate.
b. Design & supply for instrument cables internal of ST lagging.
Terminal points are terminal box mounted on base plate.
c. Erection of cables internal of GT Fuel gas unit, Purge air unit, Fuel oil unit, Flow divider unit
and Control oil unit.
(2) P’s scope
a. All of the other cables design, supply and erection, such as follows.
(a) Between equipment supplied by P
(b) Between equipment supplied by M
(c) Between equipment supplied by P and M
b. Erection of cables in M’s scope except internal of GT Fuel gas unit, Purge air unit, Fuel oil unit,
Flow divider unit and Control oil unit.
Table III-1 Division of instrument cables
Design Supply Erection
Internal of GT Enclosure M M P
Internal of GT Fuel gas unit M M M/P*
Internal of GT Purge air unit M M M/P*
Internal of GT Fuel oil unit M M M
Internal of GT Flow divider unit M M M
Internal of GT Lube oil reservoir unit M M P
Internal of GT Control oil unit M M M
Internal of ST Lagging M M P
Others except above P P P
*: Some equipment installation and cabling work for CO2 fire fighting system shall be done at site.
About more details, please refer to Attachment-2.
-4-
2. Division of impulse piping and instrument air tubing
(1) M’s scope
(a) Design & supply of impulse piping and instrument air tubing for instruments internal of GT
enclosure, Fuel gas unit, Purge air unit, Fuel oil unit, Flow divider unit, Lube oil reservoir unit
and Control oil unit.
(b) Design & supply of impulse piping and instrument air tubing for instruments internal of ST
lagging.
(c) Erection of impulse piping and instrument air tubing for instruments internal of GT Fuel gas unit,
Purge air unit, Fuel oil unit, Flow divider unit and Control oil unit.
(2) P’s scope
(a) All the other impulse piping and instrument air tubing design, supply and erection, such as
follows.
a. Impulse piping and instrument air tubing for instruments supplied by P
b. Impulse piping and instrument air tubing for instruments supplied by M except that in M’s
scope.
(b) Erection of impulse piping and instrument air tubing for M’s scope except internal of GT Fuel
gas unit, Purge air unit, Fuel oil unit, Flow divider unit and Control oil unit.
Table III-2 Division of impulse piping and instrument air tubing
Design Supply Erection
Internal of GT Enclosure M M P
Internal of GT Fuel gas unit M M M
Internal of GT Purge air unit M M M
Internal of GT Fuel oil unit M M M
Internal of GT Flow divider unit M M M
Internal of GT Lube oil reservoir unit M M P
Internal of GT Control oil unit M M M
Internal of ST Lagging M M P
Others except above P P P
About more details, please refer to Attachment-2.
(Note)
The definition of the marks which are used in Attachment-2 is as below.
The marks and meaning
‘P’ : SK E&C
‘M’ : MHI
◎ : Prepare drawings and diagrams covering whole system
○ : Supply of necessary data/drawing
△ : Review and/or advice
-5-
IV Supplemental Explanation
(1) APS (Automatic Plant Start-up & Shutdown) Controller and APR (Automatic Power Regulation) Controller
coordinate the slave controllers (Turbine Control System) as shown in the following.
Division of total software and hardware architecture shall be considered in the following.
APS and APR Controller is a part of DCS. The DCS shall prepare OPC (A&E1.0/DA1.0or2.0)
communication link to connect M’s Turbine Control System, so that the data can be transmitted between M’s
Turbine Control System and DCS and perform the above-mentioned control function.
(2) HRSG Control System shall be supplied by SK E&C as a part of DCS. M will provide necessary description
of HRSG control philosophy for Purchaser to prepare the control logic diagram for the HRSG Control
System.
(3) The reporting function (daily, monthly) to help future maintenance and plant management shall be the
function of Data Logger system in the part of DCS. The required data will be obtained from Turbine Control
System and others.
APS / APR Controller
OPC Client HRSG Control System
Plant ControlSystem
Data Logger
・Feedwater Pumps ・Drum level ・etc.
・ST Gland Seal System ・ST Oil System ・Turbine Drain System ・Condensate System ・Cooling Water System ・Deaerator level/press. ・Process Water System ・etc.
Turbine Control System
OPC (A&E1.0/DA1.0or2.0) communication link
DCS
OPC Server
Supplied by SK E&C
Supplied by MHI
-6-
Attachment-1 List of I&C Engineering works
Responsibility
Item M P
1. Layout Designing of Control Room, Relay Room and Electrical Room
○ ◎ M will supply outline drawings of M’s equipment such as OPS.
2. Drawing, Documents and Manuals ◎ ◎ Each for own equipment
3. Distributed Control System (DCS)
3.1 Basic design
Basic system configuration - ◎
Basic function specification △ ◎
Basic control logic diagram for APS (Automatic Plant Start-up and shutdown), APR (Automatic Power Regulator)
○ ◎ M will supply interface signal to GT & ST.
Control logic diagram for HRSG ○ ◎
Control logic diagram for BOP △ ◎
Control logic for other equipment - ◎
Input/output signal list ○ ◎ Each for own equipment
Set point list ○ ◎ Ditto
Graphic display plan (General form) ○ ◎ Ditto
VDU operation plan (General form) ○ ◎ Ditto
Logging items ○ ◎ Ditto
3.2 Detail engineering
System configuration & hardware specification
△ ◎
Function specification including display design
△ ◎ Each for own equipment
Control logic diagram △ ◎ Ditto
Interface specification for M’s control system
○ ◎
Schematic wiring diagram - ◎
3.3 System setup and programming - ◎
3.4 Shop inspection & test △* ◎ *Communication interface test
3.5 Training for each control function - ◎
3.6 Commissioning & test
Connection signal & Actual operation test △* ◎ *Support for field/control equipment in M’s scope
4. Turbine Control system for GT & ST
-7-
Responsibility
Item M P
Control logic diagram ◎ -
Interface specification to other systems ◎ -
5. Protection interlock system for GT and ST
Logic diagram (Interlock Diagram) ◎ -
Hardware Annunciation (if any) - ◎
6. Turbine supervisory instrument panel (GT & ST)
◎ -
Vibration Diagnostic/Analyzing System △ ◎ If required
7. Communication network (Data highway) (Including interface to TCS)
○ ◎ OPC communication link
8. Field Instruments
Instrument list ◎ ◎ Each for own equipment
Hook up drawing ◎ ◎ Ditto
Location plan ◎ ◎ Ditto
Bill of material ◎ ◎ Ditto
9. Internal cable of GT enclosure, Fuel gas unit, Purge air unit, Fuel oil unit, Flow divider unit, Lube oil reservoir unit, Control oil unit & ST lagging
◎ -
10. Cable & accessories except item 9
Cable including the followings; - Cable except GT/ST internal cable - Cable between GT enclosure T/B etc.
and TCS - Cable between ST lagging T/B and TCS
○ ◎ M will supply terminal information of M’s equipment.
Cable schedule ○ ◎
Tray/conduit route design ○ ◎
Control wiring diagram ○ ◎
11. Continuous Emission Monitoring System - ◎
12. Unit interlock system ○ ◎
13. Commissioning & test ○* ◎ *Technical Adviser
-8-
Attachment-2 Specific interface figures
Typical Terminal Points (interface of boundary limits) are shown in the attached drawings;
Fig - 1 TURBINE CONTROL
Fig - 2 TURBINE PROTECTION
Fig - 3 TURBINE SUPERVISORY INSTRUMENT
Fig - 4 GLAND STEAM PRESS CONTROL
Fig - 5 GLAND STEAM TEMPERATURE CONTROL
Fig - 6 TURBINE EXHAUST SPRAY CONTROL
Fig - 7 IMPULSE PIPING (1)
Fig - 8 IMPULSE PIPING (2)
Fig - 9 TEMPERATURE DETECTOR (1)
Fig - 10 TEMPERATURE DETECTOR (2)
Fig - 11 TEMPERATURE DETECTOR (3)
Fig - 12 INSTRUMENT AIR TUBING (1)
Fig - 13 INSTRUMENT AIR TUBING (2)
Fig - 14 MOTOR CONTROL for TURBINE
Fig - 15 MOTOR CONTROL for HRSG
Fig - 16 FUEL GAS CALORIE METER
Fig - 17 SIGNAL EXCHANGE (1)
Fig - 18 SIGNAL EXCHANGE (2)
-9-
ITEM TURBINE CONTROL Fig - 1
Power Supply Turbine
Control System
LEGEND
Scope of M Scope of P
Remark M provides only instruments. P mounts the instruments on instrument racks supplied by P. Piping and cabling are P’s portions.
GT Enclosure GT Fuel gas unit GT Purge air unit GT Fuel oil unit GT Flow divider unit GT Lube oil reservoir unit GT Control oil unit ST Lagging
Speed Pick upControl Valve
Transmitter Switch
T B
Mounted on outsideof GT Enclosure and ST Lagging
E/H
DCS
Hardwired interface
Transmitter Switch
EP
Control Valve Thermocouple,
RTD
OPC Server
OPC communication link
Ethernet communication link
All of the site erection (including equipment in M’s scope (except internal of GT Fuel gas unit, Purge air unit, Fuel oil unit, Flow divider unit and Control oil unit)) is P’s portion.
Turbine Control Package
Turbine-OPS EMS
-10-
ITEM TURBINE PROTECTION Fig - 2
LEGEND
Scope of M Scope of P
Limit Switch
Press Switch
Trip Solenoid
TB
SV
Power Supply
Turbine Interlock Panel
Turbine Supervisory Instrument
Panel
TRIP P.B.
(OPS Desk in CCR)
DCS
Power Supply
Hardwired interface
GT Enclosure GT Fuel gas unit GT Purge air unit GT Fuel oil unit GT Flow divider unit GT Lube oil reservoir unit GT Control oil unit ST Lagging
All of the site erection (including equipment in M’s scope (except internal of GT Fuel gas unit, Purge air unit, Fuel oil unit, Flow divider unit and Control oil unit)) is P’s portion.
Turbine Control Package
-11-
ITEM TURBINE SUPERVISORY INSTRUMENT Fig - 3
LEGEND
Scope of M Scope of P
Power Supply
Turbine Supervisory Instrument
Panel
GT Enclosure / ST Lagging
TB TB TB
GENGT
TB
~
・Shaft Vibration ・Shaft Position ・Shell Expansion ・Differential Expansion ・Eccentricity ・Zero Speed ・One Pulse ・SSS clutch shrinkage ・SSS clutch disengage ・SSS pinion clutch engage ・SSS pinion clutch disengage
Turbine Control System
All of the site erection (including equipment in M’s scope) is P’s portion.
Ethernet communication link
DCS
OPC Server
OPC communication link
TB TB
ST
Turbine Control Package
-12-
ITEM GLAND STEAM PRESS CONTROL Fig - 4
LEGEND
Scope of M Scope of P
NOTE) ※1 P’s scope includes control logic designing in accordance with P’s supply valves or etc, installation and testing.
※1 DCS
EP
Gland Steam Press. Control
Valve (From Aux. steam)
Gland Steam Spill Over
Valve
Gland Steam Press.
PXE
P Air Supply
All of the site erection (including equipment in M’s scope) is P’s portion.
Air Supply
-13-
ITEM GLAND STEAM TEMPERATURE CONTROL Fig - 5
NOTE) ※1 P’s scope includes control logic designing in accordance with P’s supply valves or etc, installation and testing.
LEGEND
Scope of M Scope of P
TB
※1 DCS
Gland Steam Temp. Control
Valve
ST Lagging
LP Turbine Gland Steam
Temp.
E P Air Supply
All of the site erection (including equipment in M’s scope) is P’s portion.
-14-
ITEM TURBINE EXHAUST SPRAY CONTROL Fig - 6
LEGEND
Scope of M Scope of P
NOTE) ※1 P’s scope includes control logic designing in accordance with P’s supply valves or etc, installation and testing.
Turbine Exhaust Spray Valve LP Turbine
Exhaust Steam Temp.
T B
Air Supply
DCS※1
ST Lagging SV
All of the site erection (including equipment in M’s scope) is P’s portion.
-15-
I T E M IMPULSE PIPING (1) Fig - 7
<TYPE-1> Case that instruments installed inside GT Enclosure or ST Lagging
LEGEND
Scope of M Scope of P
Cable
Cable
Transmitter or Switch
Local Rack or Stanchion
Equipment supplied by M
TB
GT Enclosure GT Fuel gas unit GT Purge air unit GT Fuel oil unit GT Flow divider unit GT Lube oil reservoir unit GT Control oil unit ST Lagging
Turbine Control System
<TYPE-2> Case that instruments installed on skid supplied by M
Equipment supplied by M
Cable
GT Fuel gas flow meter skid GT Fuel gas inlet filter skid GT MFOP unit GT Water injection pump skid
<TYPE-3> Case that instruments installed on HRSG
Cable
Equipment supplied by M
DCS Turbine Control System
All of the site erection (including equipment in M’s scope (except internal of GT Fuel gas unit, Purge air unit, Fuel oil unit, Flow divider unit and Control oil unit)) is P’s portion.
Turbine Control Package
Turbine Control Package
-16-
I T E M IMPULSE PIPING (2) Fig - 8
All of the site erection (including equipment in M’s scope) is P’s portion.
LEGEND
Scope of M Scope of P
<TYPE-6> Case that instruments (supplied by P)installed on equipment supplied by P
<TYPE-5> Case that instruments installed on equipment supplied by P
Remark M provides only instrument. P mounts this instrument on the instrument rack supplied by P. Piping and cabling are P’s portion.
Equipment supplied by P
Cable
Equipment supplied by P
Cable
Turbine Control System or DCS
<TYPE-4> Case that instruments installed on HRSG
Cable
Equipment supplied by M
DCS
<TYPE-3> Case that instruments installed on equipment supplied by M except above TYPE-1 & 2
Cable
Equipment supplied by M
Turbine Control System
Turbine Control Package
Turbine Control System or DCS
-17-
ITEM TEMPERATURE DETECTOR (1) Fig - 9
LEGEND
Scope of M Scope of P
<TYPE-1> Case that temperature detectors installed inside GT Enclosure
TB
Compensation Wire
GT
Turbine Control System
GT Enclosure GT Fuel gas unit GT Purge air unit GT Fuel oil unit GT Flow divider unit GT Lube oil reservoir unit GT Control oil unit
<TYPE-3> Case that temperature detectors installed on HRSG
Compensation Wire
HRSG
HRSG area
DCS
<TYPE-2> Case that temperature detectors installed inside skid
GT Fuel gas flow meter skid GT Fuel gas inlet filter skid GT MFOP unit GT Water injection pump skid
Compensation Wire
Equipment supplied by M
Turbine Control System
All of the site erection (including equipment in M’s scope (except internal of GT Fuel gas unit, Purge air unit, Fuel oil unit, Flow divider unit and Control oil unit)) is P’s portion.
<TYPE-3> Case that temperature detectors installed on HRSG
Compensation Wire
HRSG
HRSG area
DCS
-18-
ITEM TEMPERATURE DETECTOR (2) Fig - 10
LEGEND
Scope of M Scope of P
Equipment supplied by M (outside of GT Enclosure, ST Lagging or HRSG)
Compensation Wire
<TYPE-5> Case that temperature detectors installed on equipment supplied by M (outside of GT enclosure, ST lagging or HRSG)
DCS
Turbine Control System
Compensation Wire
All of the site erection (including equipment in M’s scope) is P’s portion.
<TYPE-4> Case that temperature detectors installed inside ST Lagging
TB
Compensation Wire
ST ST Lagging
Turbine Control System
DCS
-19-
ITEM TEMPERATURE DETECTOR (3) Fig - 11
LEGEND
Scope of M Scope of P
<TYPE-6> Case that temperature detectors (supplied by P) installed on equipment supplied by P
Equipment supplied by P Compensation
Wire
<TYPE-5> Case that temperature detectors installed on equipment supplied by P
Equipment supplied by P Compensation
Wire
Turbine Control System or DCS
Turbine Control System or DCS
All of the site erection (including equipment in M’s scope) is P’s portion.
-20-
ITEM INSTRUMENT AIR TUBING(1) Fig - 12
LEGEND
Scope of M Scope of P
<TYPE-1> Case that control valves installed inside GT Enclosure
E P
GT Enclosure, GT Fuel gas unit, GT Purge air unit, GT Fuel oil unit, GT Flow divider unit
Turbine Control System
TB
Air Supply
Header
SV
<TYPE-2> Case that solenoid valves installed inside ST Lagging
ST Lagging
Air supply SV Turbine Control
System TB
<TYPE-3> Case that control valves installed inside HRSG
E P
HRSG area
DCS
SV
Air supply
Air supply
All of the site erection (including equipment in M’s scope (except internal of GT Fuel gas unit, Purge air unit, Fuel oil unit, Flow divider unit and Control oil unit)) is P’s portion.
<TYPE-3> Case that control valves installed inside HRSG
E P
HRSG area
DCS
SV
Air supply
Air supply
-21-
ITEM INSTRUMENT AIR TUBING(2) Fig - 13
LEGEND
Scope of M Scope of P
All of the site erection (including equipment in M’s scope) is P’s portion.
<TYPE-3> Case that control valves installed on piping supplied by M in GT portion (outside of GT enclosure or ST lagging)
E P Air Supply
SV
Air Supply
<TYPE-5> Case that control valve supplied by P installed on equipment supplied by P
E P Air Supply
SV
Air Supply
Turbine Control System or DCS
Turbine Control System
<TYPE-4> Case that control valves installed on piping supplied by P in GT portion (outside of GT enclosure)
E P Air Supply
SV
Air Supply
Turbine Control System
-22-
ITEM MOTOR CONTROL for TURBINE Fig - 14
Turbine Control System
MCC
MOTORMOTOR
MM
LEGEND
Scope of M Scope of P
All of the site erection (including equipment in M’s scope) is P’s portion.
Power Cable
DC Starter
Turbine Control Package
-23-
ITEM MOTOR CONTROL for HRSG Fig - 15
LEGEND
Scope of M Scope of P
All of the site erection (including equipment in M’s scope) is P’s portion.
SWGR, MCC
MOTORMOTOR
MM
DCS
Power Cable
-24-
ITEM FUEL GAS CALORIE METER Fig - 16
Fuel gas pipeline
LEGEND
Scope of M Scope of P
All of the site erection (including equipment in M’s scope) is P’s portion.
Fuel Gas
Calorie Meter
Turbine Control System
To drain pit
Sample gas vent
Gas Cylinders
Remark The fuel gas calorie meter will be supplied loose by M The gas cylinders together with the calibration gas shall be supplied by P.
Power Supply (UPS)
Instrument Air
Calorie Meter House
Remark The calorie meter will be installed inside of the house supplied by P.
-25-
ITEM SIGNAL EXCHANGE (1) Fig - 17
LEGEND
Scope of M Scope of P
Interfacing signal specification AI: 4-20mA, Input resistance 250ohm AO: 4-20mA, Load impedance less than 550ohm/750ohm DI: Contact rating 24VDC/5mA DO: Dry Contact, Contact rating 120VDC/0.5A, 120VAC/0.5A
All of the site erection (including equipment in M’s scope) is P’s portion.
Panels supplied by P
Panels supplied by M
Dry Contact
Dry Contact
24VDC4-20mADC
4-20mADC
Isolator
Isolator
24VDC
120VDC
120VAC
-26-
ITEM SIGNAL EXCHANGE (2) Fig - 18
LEGEND
Scope of M Scope of P
All of the site erection (including equipment in M’s scope) is P’s portion.
Instruments supplied by P
Panels supplied by M
4-20mADC
RTD (Pt100ohm, 3-wired)
Thermocouple (Type E) 24VDC powered
by TCS
2-wired type
Transmitter
RTD, T/C
Compensation Wire for T/C
E P
Control Valve
4-20mADC
SV
Solenoid Valve
120VDC
Interfacing signal specification AI: 4-20mA, Input resistance 250ohm AO: 4-20mA, Load impedance less than 550ohm/750ohm
9. TECHNICAL INFORMATION
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
9 - 0 - 1
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
9.1 (Not Used)
9.2 PAINTING SPECIFICATION
9.3 INSULATION SPECIFICATION
9.4 DESIGNN PHILOSOPHY OF VALVE NAME PLATE
9.5 SPECIAL TOOL LIST
9.6 (Not Used)
9.7 (Not Used)
9.8 UTILITY LIST
9.9 ELECTRICAL LOAD LIST
9.10 DESIGN DATA FOR LIFTING DEVICE
9.11 HEAT LOAD LIST
9.12 EQUIPMENT LOADING INFORMATION
9. TECHNICAL INFORMATION 9.2 PAINTING SPECIFICATION
MITSUBISHI Bangladesh Ashuganj CCPP
Specification No. MP-A2292
9 - 2 - 1
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Title Drawing No.
1. PAINTING SPECIFICATION (MHI PORTION) -
2. PAINTING PROCEDURE (MELCO PORTION) 6126-W163
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
PAINTING SPECIFICATION (MHI PORTION)
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
1. GENERAL 1.1 This Painting Specification will be applied mechanical equipment supplied by MHI
for the Turbine and the Auxiliary equipment. 1.2 The painting procedure/specification including surface preparation, coating method,
paint materials etc. for equipment/items procured as package, mass product items or standard equipment will be in accordance with the manufacturer’s standard specification. (M.S.)
1.3 Painting specification for instrumentation such as local instrument rack, stanchion,
terminal box, instruments etc. shall be in accordance with the manufacturer’s standard specifications. (M.S)
1.4 Wherever, “general name” or “specific product names” are indicated in the list, the
equivalent products will also be applicable. 1.5 Dry film thickness of painting indicated in the list means averaged thickness. 1.6 The Painting shall not be applied to the following surface of equipments and
materials. (a) Stainless steel, Aluminum, insulation lagging, Brass, Copper, Bronze, Chrome
plate, Plastic, Plastic coated material and non-ferrous material. (b) Equipment parts such as coupling, shaft, surface, of sliding etc. (c) Metal surface to be embedded in concrete. (d) Internal surface of pipes, tubes, headers, fittings, valves, pressure vessel and
others. (e) Galvanized surface except damaged area.
(f) Machined surfaces
(g) Lighting Poles
(h) Cable tray and supports
(i) Bus duct enclosure
(j) Concrete floors, curbs, side wall, paving
(k) Electrical conduit, wireways and JBs (except specified)
(l) Electrical Conductors
(m) Floor plates
(n) Gauges
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
(o) Glazing
(p) Hardwire
(q) Lighting fixtures except supports
(r) Porcelain embedded surface
(s) Porcelain Bushing
(t) Rubber Belt, Skirting gasket and idle disc
(u) Others which are not necessary to apply painting or will hinder on performance
1.7 Rust Preventive Means Other than Painting
(a) Inside of pre-fabricated pipes at shop will be cleaned mechanically or by air blowing depending on sizes and VCI/VPI will be enclosed for rust prevention during transportation.
VCI・・・Vapour Corrosion Inhibitor
VPI・・・Vapour Phase Inhibitor
(b) Machined surface of weld end preparation and surfaces within 75 mm of field welds shall be coated with consumable rust preventive coating.
(c) 50A and smaller pipes will be capped at shop and Wash Primer will be applied to pipes at mill shop to prevent the rust during transportation.
1.8 Lead, Chrome and Cadmium are not included in all paint products.
1.9 Blasting media shall be shot, slag or girt. The use of sand or silica bearing material is prohibited.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
1* 75** Shop Blast Cleaning SSPC SP 10
2 Pack Epoxy MIO Paint (EPONICS MIO or equivalent)
1* 75**
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
( 1* ) ( 75** )
2 Pack Epoxy MIO Paint (EPONICS MIO or equivalent)
( 1* ) ( 75** )
Spot cleaning and touch up for damaged area only
1A Structural steel : For indoor & Outdoor : Not for stainless steel
Site Power Tool Cleaning SSPC SP 3
Acryl Polyurethane Enamel (V TOP-HB or equivalent)
1 50
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
1* 75** Shop Blast cleaning SSPC SP 10
2 Pack Epoxy MIO Paint (EPONICS MIO or equivalent)
1* 75**
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
( 1* ) ( 75** )
2 Pack Epoxy MIO Paint (EPONICS MIO or equivalent)
( 1* ) ( 75** )
Spot cleaning and touch up for damaged area only
1B Structural steel : For indoor only : Not for stainless steel
Site Power tool cleaning SSPC SP 3
2 Pack Epoxy Top Coat (EPONICS #20 TOP COAT or equivalent)
1 50
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
1* 75**
2 Pack Epoxy Coating (EPONICS #20 TOP COAT or equivalent)
1* 75**
Shop Blast cleaning SSPC SP 10
Acryl Polyurethane Enamel (V TOP-HB or equivalent)
1 50
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
( 1* ) ( 75** )
2 Pack Epoxy Coating (EPONICS #20 TOP COAT or equivalent)
( 1* ) ( 75** )
2A Structural steel : For Indoor & Outdoor : Not for stainless steel
Site Power tool cleaning SSPC SP 3
Acryl Polyurethane Enamel (V TOP-HB or equivalent)
( 1 ) ( 50 )
Spot cleaning and touch up for damaged area only
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
1* 75**
2 Pack Epoxy MIO Paint (EPONICS MIO or equivalent)
1* 75**
Shop Blast cleaning SSPC SP 10
2 Pack Epoxy Top Coat (EPONICS #20 TOP COAT or equivalent)
1 50
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
( 1* ) ( 75** )
2 Pack Epoxy MIO Paint (EPONICS MIO or equivalent)
( 1* ) ( 75** )
2B Structural steel : For Indoor only : Not for stainless steel
Site Power tool cleaning SSPC SP 3
2 Pack Epoxy Top Coat (EPONICS #20 TOP COAT or equivalent)
( 1 ) ( 50 )
Spot cleaning and touch up for damaged area only
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
1* 75** Shop Blast cleaning SSPC SP 10
2 Pack Epoxy MIO Paint (EPONICS MIO or equivalent)
1* 75**
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
( 1* ) ( 75** )
2 Pack Epoxy MIO Paint (EPONICS MIO or equivalent)
( 1* ) ( 75** )
Spot cleaning and touch up for damaged area only
3A External surface of equipment & pipe : For Indoor & Outdoor : Below 100°C : Not for stainless steel
Site Power tool cleaning SSPC SP 3
Acryl Polyurethane Enamel (V TOP-HB or equivalent)
1 50
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
1* 75** Shop Blast cleaning SSPC SP 10
2 Pack Epoxy MIO Paint (EPONICS MIO or equivalent)
1* 75**
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
( 1* ) ( 75** )
2 Pack Epoxy MIO Paint (EPONICS MIO or equivalent)
( 1* ) ( 75** )
Spot cleaning and touch up for damaged area only
3B External surface of equipment & pipe : For Indoor only : Below 100°C : Not for stainless steel
Site Power tool cleaning SSPC SP 3
2 Pack Epoxy Top Coat (EPONICS #20 TOP COAT or equivalent)
1 50
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
1* 75**
2 Pack Epoxy Coating (EPONICS #20 TOP COAT or equivalent)
1* 75**
Shop Blast cleaning SSPC SP 10
Acryl Polyurethane Enamel (V TOP-HB or equivalent)
1 50
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
( 1* ) ( 75** )
2 Pack Epoxy Coating (EPONICS #20 TOP COAT or equivalent)
( 1* ) ( 75** )
4A External surface of equipment & Pipe : For Indoor & Outdoor : Below 100°C : Not for stainless steel
Site Power tool cleaning SSPC SP 3
Acryl Polyurethane Enamel (V TOP-HB or equivalent)
( 1 ) ( 50 )
Spot cleaning and touch up for damaged area only
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
1* 75**
2 Pack Epoxy MIO Paint (EPONICS MIO or equivalent)
1* 75**
Shop Blast cleaning SSPC SP 10
2 Pack Epoxy Top Coat (EPONICS #20 TOP COAT or equivalent)
1 50
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
( 1* ) ( 75** )
2 Pack Epoxy MIO Paint (EPONICS MIO or equivalent)
( 1* ) ( 75** )
4B External surface of equipment & Pipe : For Indoor only : Below 100°C : Not for stainless steel
Site Power tool cleaning SSPC SP 3
2 Pack Epoxy Top Coat (EPONICS #20 TOP COAT or equivalent)
( 1 ) ( 50 )
Spot cleaning and touch up for damaged area only
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Ethyl Silicate Zinc Rich Paint / High Build Type
(ZETTAR OL-HB or equivalent)
1 50 Shop Blast cleaning SSPC SP 10
Silicone Aluminum Heat Resistant Paint (PYROSIN B #1000 SILVER
or equivalent)
1 10
Ethyl Silicate Zinc Rich Paint / High Build Type
(ZETTAR OL-HB or equivalent)
1 ( 50 )
Silicone Aluminum Heat Resistant Paint (PYROSIN B #1000 SILVER
or equivalent)
1 ( 10 )
Spot cleaning and touch up for damaged area only
5 External surface of equipment & pipe : High temperature service/Below 400°C : Not to be insulated : Not for stainless steel
Site Power tool cleaning SSPC SP 3
Silicone Aluminum Heat Resistant Paint (PYROSIN B #1000 SILVER
or equivalent)
1 10
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Ethyl Silicate Zinc Rich Paint / High Build Type
(ZETTAR OL-HB or equivalent)
1 50 Shop Blast cleaning SSPC SP 10
Silicone Aluminum Heat Resistant Paint (PYROSIN B #1000 SILVER
or equivalent)
2 10 / Coat
Ethyl Silicate Zinc Rich Paint / High Build Type
(ZETTAR OL-HB or equivalent)
1 ( 50 )
6 External surface of equipment & pipe : High temperature service/Below 400°C : Not to be insulated : Not for stainless steel
Site Power tool cleaning SSPC SP 3
Silicone Aluminum Heat Resistant Paint (PYROSIN B #1000 SILVER or equivalent)
2 (10 / Coat )
Spot cleaning and touch up for damaged area only
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Silicone Aluminum Heat Resistant Paint (PYROSIN B #1000 SILVER HB
or equivalent)
1 25 Shop Blast cleaning SSPC SP 10
Silicone Aluminum Heat Resistant Paint (PYROSIN B #1000 SILVER HB
or equivalent)
( 1 ) ( 25 )
Silicone Aluminum Heat Resistant Paint (PYROSIN B #1000 SILVER HB
or equivalent)
1
25
Spot cleaning and touch up for damaged area only
7 External surface of equipment & pipe : High temperature service/Below 600°C : Not to be insulated : Not for stainless steel
Site Power tool cleaning SSPC SP 3
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Silicone Aluminum Heat Resistant Paint (PYROSIN B #1000 SILVER HB
or equivalent)
2 25/Coat Shop Blast cleaning SSPC SP 10
Silicone Aluminum Heat Resistant Paint (PYROSIN B #1000 SILVER HB
or equivalent)
( 2 ) ( 25/Coat )
8 External surface of equipment & pipe : High temperature service/Below 600°C : Not to be insulated : Not for Stainless Steel
Site Power tool cleaning SSPC SP 3
Spot cleaning and touch up for damaged area only
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Epoxy Zinc Phosphate Primer (EONICS ZP or equivalent)
2*
60** / Coat
Epoxy MIO Paint (EPONICS MIO or equivalent)
1* 50**
9A External surface site fabricated pipe : For Indoor & Outdoor : Below 100°C : For water, air, steam and gas piping : Not for stainless steel
Site Power tool cleaning SSPC SP 3
Acryl Polyurethane Enamel (V TOP-HB or equivalent)
1 50**
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
1* 75**
2 Pack Epoxy Under Coat (EPONICS #20 UNDER COAT
or equivalent)
1* 75**
9B External surface site fabricated pipe : For Indoor only : Below 100°C : For water, air, steam and gas piping : Not for stainless steel
Site Blast cleaning SSPC SP 10
2 Pack Epoxy Coating (EPONICS #20 TOP COAT or equivalent)
1 50
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Shop Blast cleaning SSPC SP 10
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
1* 75**
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
( 1* ) ( 75** ) Spot cleaning and touch up for damaged area only
2 Pack Epoxy Coating (EPONICS #20 TOP COAT or equivalent)
1* 75**
10A External surface site fabricated pipe : For Indoor & Outdoor : Below 100°C : For oil piping : Not for stainless steel
Site Power tool cleaning SSPC SP 3
Acryl Polyurethane Enamel (V TOP-HB or equivalent)
1 50
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Shop Blast cleaning SSPC SP 10
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
1* 75**
2 Pack Epoxy Zinc Rich Paint (ZETTAR EP-2HB or equivalent)
( 1* ) ( 75** ) Spot cleaning and touch up for damaged area only
2 Pack Epoxy Under Coat (EPONICS #20 UNDER COAT
or equivalent)
1* 75**
10B External surface site fabricated pipe : For Indoor only : Below 100°C : For oil piping : Not for stainless steel
Site Power tool cleaning SSPC SP 3
2 Pack Epoxy Coating (EPONICS #20 TOP COAT or equivalent)
1 50
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Shop Blast cleaning SSPC SP 6
Zinc Phosphate / Alkyd Primer (ZP PRIMER NON-LEAD or equivalent)
1* 70** 11 External surface of equipment and pipe : High Temperature : To be insulated Site Power tool
cleaning SSPC SP 3
Zinc Phosphate / Alkyd Primer (ZP PRIMER NON-LEAD or equivalent)
1 ( 70 ) Spot cleaning and touch up for damaged area only
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Shop Galvanizing 12 Galvanized surface (Touch-up) : Below 150°C Site Power tool
cleaning SSPC SP 3
Epoxy Zinc Rich Paint / High Build Type (ZETTAR EP-2 HB or equivalent)
1* ( 70** ) Spot cleaning and touch up for damaged area only
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Special Epoxy Primer (ETON #2100E PRIMER
EXPORT GRAY)
2 30/Coat Shop Blast cleaning SSPC SP 10
Special Epoxy Silver Paint (ETON #2100E SILVER)
2 25/Coat
Special Epoxy Primer (ETON #2100E PRIMER
EXPORT GRAY)
( 2 ) ( 30/Coat )
13-1 Internal surface for lube oil tank and surface immersed into oil for pump
Site Sanding treatment with abrasive paper and Solvent cleaning SSPC SP 1
Special Epoxy Silver Paint (ETON #2100E SILVER)
( 2 ) ( 25/Coat )
Spot cleaning and touch up for damaged area only
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
15-1 Internal surface for exhaust duct (EB01) Internal surface for GT exhaust expansion joint
Shop Commercial blastcleaning SSPC SP 6
Quick Drying Temporary Anti-Corrosive Clear
(BOGO CLEAR #100 QD or equivalent)
2 15/Coat
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Shop Blast cleaning SSPC SP 10
Ethyl Silicate Zinc Rich Paint / High Build Type
(ZETTAR OL-HB or equivalent)
1 50 15-2 Internal surface for exhaust duct (EB02) : Below 400°C : Not for Stainless Steel Site Power tool
cleaning SSPC SP 3
Ethyl Silicate Zinc Rich Paint / High Build Type
(ZETTAR OL-HB or equivalent)
( 1 ) ( 50 ) Spot cleaning and touch up for damaged area only
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
16-1 External surface for exhaust duct (EB01)
Shop Commercial blastcleaning SSPC SP 6
Quick Drying Temporary Anti-Corrosive Clear
(BOGO CLEAR #100 QD or equivalent)
2 15/Coat
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Shop Blast cleaning SSPC SP 10
Silicone Aluminum Heat Resistant Paint (PYROSIN B #1000 SILVER HB
or equivalent)
2 40** 16-5 External surface for up-stream side of G/T exhaust expansion joint (EE-01) : High temperature service/Below 600°C : Not to be insulated
Site Power tool cleaning SSPC SP 3
Silicone Aluminum Heat Resistant Paint (PYROSIN B #1000 SILVER HB
or equivalent)
( 2 ) ( 40** ) Spot cleaning and touch up for damaged area only
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Epoxy Zinc Rich Paint / High Build Type (ZETTAR EP-2 HB or equivalent)
1* 75**
2 Pack Epoxy Coating (EPONICS #20 TOP COAT or equivalent)
1* 75**
Shop Blast cleaning SSPC SP 10
Acryl Polyurethane Enamel (V TOP-HB or equivalent)
1 50
Epoxy Zinc Rich Paint / High Build Type (ZETTAR EP-2 HB or equivalent)
( 1* ) (75** )
2 Pack Epoxy Coating (EPONICS #20 TOP COAT or equivalent)
( 1* ) ( 75** )
17 Internal surface for G/T inlet air duct
Site Power tool Cleaning SSPC SP 3
Acryl Polyurethane Enamel (V TOP-HB or equivalent)
( 1 ) ( 50 )
Spot cleaning and touch up for damaged area only
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Epoxy Zinc Rich Paint / High Build Type (ZETTAR EP-2 HB or equivalent)
1* 75** Shop Blast cleaning SSPC SP 10
2 Pack Epoxy MIO Paint (EPONICS MIO or equivalent)
1* 75**
Epoxy Zinc Rich Paint / High Build Type (ZETTAR EP-2 HB or equivalent)
( 1 ) ( 75** )
2 Pack Epoxy MIO Paint (EPONICS MIO or equivalent)
( 1 *) ( 75** )
Spot cleaning and touch up for damaged area only
Acryl Polyurethane Enamel (V TOP-HB or equivalent)
1 50
18-1 External surface for G/T inlet air duct (Not insulated)
Site Power tool Cleaning SSPC SP 3
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Epoxy Zinc Rich Paint / High Build Type (ZETTAR EP-2 HB or equivalent)
1* 75** Shop Blast cleaning SSPC SP 10
2 Pack Epoxy Coating (EPONICS #20 TOP COAT or equivalent)
1* 75**
Epoxy Zinc Rich Paint / High Build Type (ZETTAR EP-2 HB or equivalent)
( 1* ) ( 75** )
18-2 External surface for G/T inlet air duct (Insulated surface)
Site Power tool Cleaning SSPC SP 3
2 Pack Epoxy Coating (EPONICS #20 TOP COAT or equivalent)
( 1* ) ( 75** )
Spot cleaning and touch up for damaged area only
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Epoxy Melamine Primer (DELICONE #260 NPS or equivalent)
2 20/Coat Shop Pickling SSPC SP 8 and phosphatizing
Melamine Alkyd Enamel (DELICCONE #700 or equivalent)
2 20/Coat
19 Instrument and Panel
Site Sanding treatment by abrasive paper
Acryl Polyurethane Enamel (V TOP-H TOP COAT or equivalent)
( 2~3 ) ( 80**) Spot cleaning and touch up for damaged area only
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.
This document contains information proprietary to MITSUBISHI HEAVY INDUSTRIES, LTD. It is submitted in confidence and is to be used solely for the purpose for which is furnished and returned upon request. This document and such information is not to be reproduced, transmitted, disclosed or used otherwise in whole or in part without the written authorization of MITSUBISHI HEAVY INDUSTRIES, LTD.
Detailed Painting Schedule
System No.
Application
Place of operation
Surface preparation
General name ( Product name )
Number of coat
Dry Film Thickness
(μ)
Remarks
Shop M.S. M.S. M.S. M.S. 23 Equipment/Items procured as package, mass product items or standard equipment Such as crane, valve, DG set, fire detection system and others which are finish painted in shop to manufacture’s standards.
Site Sand Treat. or power tool according to manufacture’s standard
( M.S.) ( M.S.) ( M.S.) Spot cleaning and touch up for damaged area only
Mark* :If the paint method is brush, the number of coat is 2. Mark** shows total D.F.T. The paint does not include Pb, Cr and Cd.