UBEX1-M1&2-M-52-LAB-1212
DOCUMENT STATUS: FOR CONSTRUCTION
110.09.05Revision after nozzles calculation
008.08.05General rev.
Rev.DateDescriptionDrwn.Chkd.Appd.
UONG BI 300 MW EXTENSION POWER PLANT
Owner:
EPC Contractor:
Subcontractor:
Document Title:
Turbine Plant
Feed Water System
System Description
. . Project No.Format: 4 (297210)Total Pages: 16
Designed by:
FunctionNameSignDate
ApprovedKuyumchan
16.08.04
CheckedNovikov16.08.04
Drawn Bragin16.08.04
. Document No.: UBEX1-M1&2-M-08-LA-1354Date:
10.09.05Rev:
1
This drawing may not be
reproduced or transmitted to
other organization or persons
without permission of JSC
CENTRE OF ENGINEERING UESR
branch Institute
Teploelektroproject175N9-10UHJ-1354-TD.M.1STAGE
WDSHEET
1SHEETS
16
UONG BI 300 MW EXTENSION POWER PLANT
Turbine Plant
Feed Water System. System Description PI ..
. .
Format: 4
CONTENTS:
3I P&I DIAGRAM PROCESS DESCRIPTION.
31.1 Function.
31.2 Description.
51.3 Process monitoring.
8II CONTROL CONDITIONS.
82.1 Boiler feed pump (BFP) LAC11AP002 (LAC12AP002,
LAC13AP002).
92.2 BFP hydraulic coupling LAC11AA001 (LAC12AA001,
LAC13AA001).
92.3 Gate valve LAB11AA201 (LAB12AA201, LAB13AA201) on BP
suction.
92.4 Minimum flow valve LAC11AA003 (LAC12AA003, LAC13AA003) on
BFP recirculation line (BFP P&I Diagram
UBEX1-M1&2-M-52-LAC-0001, UBEX1-M1&2-M-52-LAC-0002,
UBEX1-M1&2-M-52-LAC-0003).
102.5 Gate valve LAB11AA202 (LAB12AA202, LAB13AA202) on BFP
discharge.
102.6 Valve LAB11AA212 (LAB12AA212, LAB13AA212) on gate valve
bypass on BFP discharge.
102.7 Gate valve LAF11AA201 (LAF12AA201, LAF13AA201) on pipeline
from BFP intermediate stage.
112.8 Valve LFN32AA201 (LFN32AA202, LFN32AA203) on hydrazine
supply to booster pump suction.
112.9 Valve LFN82AA201 (LFN82AA202, LFN82AA203) on ammonia
supply to booster pump suction.
112.10 Gate valves LAB20AA210, LAB31AA201 on the boiler feed
water control valve station.
122.11 Control valves LAB20AA001, LAB31AA001 at the boiler feed
water control valve station.
122.12 Gate valve LAB33AA201 on boiler filling line with water
by LP Heater No.2 condensate recovery pumps.
132.13 Gate valve LAE01AA201 on HP feed water supply for the
superheater sprays.
132.14 Gate valve LAE02AA201 on the HP spray water recirculation
to the deaerator.
132.15 Control valve LAE02AA001 for HP spray water recirculation
to the deaerator.
142.16 Gate valve LAF01AA201 on the reheater starting LP
sprays.
142.17 Gate valve LAF02AA201 on the LP spray water recirculation
to the deaerator.
142.18 Control valve LAF02AA001 for LP spray water recirculation
to the deaerator.
15III INTERRELATION WITH OTHER SYSTEMS.
I P&I DIAGRAM PROCESS DESCRIPTION.
1.1 Function.
Feed water pipelines system (LAB, LAE, LAF) supplies feed water
to the boiler unit and for sprays into HP bypass station,
lighting-up pressure reducing/desuperheating station (PRDS) (on
live steam), auxiliary cold reheat PRDS, for sprays into the
superheater attemperators to regulate the main steam temperature,
and for sprays into the reheater to regulate reheat steam
temperature.
1.2 Description.
Feed water from the deaerator is supplied via three DN 500
pipelines to the suction of three booster pumps (BP), on which
strainers LA11AT120, LA12AT120, LAC13AT120 and motorized isolating
valves LAB11AA201, LAB12AA201, LAB13AA201 are installed.
There is also a hydrazine and ammonia dosing to the suction
header of each booster pump. Hydrazine is supplied via DN 15
pipeline with motorized isolating valves LFN32AA201 (LFN32AA202,
LFN32AA203) installed on it. Ammonia, as well, is supplied via DN
15 pipeline with motorized isolating valves LFN82AA201 (LFN82AA202,
LFN82AA203) installed on it.On the booster pump suction pipeline,
safety valve LAB11AA601 (LAB12AA601, LAB13AA601) is provided to
prevent pressure from rising above 22 kgf/cm in the event of faulty
check valve and open gate valve on the BFP discharge. Discharge
from safety valve is to turbine hall LP flash tank drains header
LFC23BR001.Feed water is supplied from discharge of each booster
pump to the suction of the main boiler feed pump (BFP) LAC11AP002
(LAC12AP002, LAC13AP002) via a DN 250 pipeline, on which strainer
LA11AT121 (LA12AT121, LA13AT121) is installed.
The booster pump and main boiler feed pump are driven by one
electric motor. To control the BFP rotational speed, each feed
station is equipped with hydraulic coupling LAC11AA001 (LAC12AA001,
LAC13AA001) with a control electric actuator.
Water is supplied from discharge of each BFP via a DN 200/250
pipeline to the BFPs common discharge header DN 300. On each BFP
discharge pipeline, check valve with minimum flow connection
LAC11AA702 (LAC12AA702, LAC13AA702) and motorized isolating valve
LAB11AA202 (LAB12AA202, LAB13AA202) are installed. A DN 20 bypass
is provided for gate valve LAB11AA202 (LAB12AA202, LAB13AA202) on
the BFP discharge, with isolating valve LAB11AA212 (LAB12AA212,
LAB13AA212) and flow orifice LAB11BP001 (LAB12 BP001, LAB13 BP001)
respectively, installed on it. During unit operation the bypass is
also used for checking the non-return valve tightness LAB11AA701
(LAB12AA701, LAB13AA701) on BFP discharge through pressure checking
on discharge of LAB11CP002 (LAB12 CP002, LAB13 CP002) pump when the
gate valve on its discharge is closed and the valve on the gate
valve bypass is opened.
From each minimum flow line from check valve LAC11AA702
(LAC12AA702, LAC13AA702) the feed water is discharged via a DN
100/150 pipeline to the deaerator (BFP minimum flow line); on each
minimum flow line, motorized minimum flow discharge throttle valve
LA11AA003 (LA12AA003, LA13AA003), manual isolating gate valve
LAB14AA509 (LAB15AA509, LAB16AA509), check valve LAB14AA701
(LAB15AA701, LAB16AA701), and flow orifices LAB14BP002 (LAB15BP002,
LAB16BP002) to reduce pressure and to prevent steaming in the
pipeline to the deaerator are installed.
Feed water from BFPs discharge header is supplied via a DN 300
common pipeline to boiler feed water control valve station.
The boiler feed water control valve station comprises of:
DN 300 main line, on which motorized isolating valve LAB20AA210
and control valve LAB20AA001 are installed;
DN 150 startup line, on which motorized isolating valve
LAB31AA201 and control valve LAB31AA001 are installed.From the
boiler feed water control valve station, the feed water is supplied
via a DN 300 common pipeline to the HP heaters.
Installed downstream of the HP heaters on the common pipeline
upstream of the boiler is flow measuring device LAB30CF001 and
check valve LAB30AA701. Feed water is supplied to boiler via two DN
250 pipelines.The possibility of filling the boiler with deaerated
water by LP Heater No.2 condensate recovery pumps is provided, to
the suction of which the deaerator water is supplied via a DN 150
pipeline, on which motorized isolating gate valve LAB33AA201, check
valve LAB33AA701, spectacle blind flange LAB33AA501 and manual
isolating gate valves LAB33AA502, LAB33AA503 are installed. When
boiler filling is finished gate valves have to be closed and sealed
in closed position, and the plug turned to Closed position for
reliable low pressure pipelines disconnection from feed path. From
BFPs discharge header, the water is supplied for sprays:
into HP bypass station, via a DN 125 pipeline;
into standby PRDS desuperheater, via a DN 50 pipeline;
into boiler superheater spray attemperators, via a DN 100
pipeline; into the reheater starting spray attemperators, via a DN
100 pipeline.
Feed water from BFPs discharge header is supplied for high
pressure sprays (into boiler superheater) via common pipeline DN
100, on which motorized isolating valve LAE01AA201 and check valve
LAE01AA701 are installed. On isolating valve LAE01AA201 bypass DN
100 there is a flow orifice LAE01BP001 which is used under starting
conditions to reduce the spray water pressure. At normal steam
pressure, the bypass line is closed by opening gate valve
LAE10AA201. To maintain the spray water pressure during startup,
the feed water from the common supply line for the superheater
sprays is discharged into the deaerator via a DN 65 pipeline, on
which motorized isolating valve LAE02AA201 and control valve
LAE02AA001 are installed.
Feed water from BFPs discharge header is supplied for low
pressure starting sprays (into boiler reheater) via common pipeline
DN 100, on which motorized isolating valve LAF01AA201, check valve
LAF01AA701 and flow orifice LAF01BP001 are installed to reduce the
spray water pressure. To maintain the spray water pressure during
startup, the feed water from the common supply line for the
reheater sprays is discharged into the deaerator via a DN 65
pipeline, on which motorized isolating valve LAF02AA201 and
motorized control valve LAF02AA001 are installed.
From each BFP intermediate stage, water is supplied via a DN 65
pipeline to a common sprays header; on each extraction line from
the BFP intermediate stage, check valve LAF11AA701 (LAF12AA701,
LAF13AA701) and motorized isolating valve LAF11AA201 (LAF12AA201,
LAF13AA201) are installed.
From BFP intermediate stage common spray header DN 65 feed water
is supplied for sprays:
into auxiliary cold reheat PRDS desuperheater, via a DN 25
pipeline;
into the regular reheater spray attemperators, via a DN 65
pipeline.On feed water pipelines there are the drain lines for
pipelines-emptying, on which isolating valves are installed. Drain
lines connect into the turbine hall LP drains flash tank. Drain
lines from BFP minimum flow lines and from BFP intermediate stage
lines connect into the boiler blowdown tank. 1.3 Process
monitoring.
On the suction pipeline after each booster pump strainer, there
is pressure measurement LAB11CP001 (LAB12CP001, LAB13CP001) with
information input to the ICMS for monitoring purposes.
In each BFP discharge pipeline before check valve there is
pressure measurement LAB11CP002 (LAB12CP002, LAB13CP002) with
information input to the ICMS for monitoring, signaling and for
execution of BFP protections, interlocks and closed loop control.
In the discharge pipeline of each BFP there is feed water
temperature measurement LAB11CT002 (LAB12CT002, LAB13CT002) with
information input to the ICMS for monitoring purposes.
On the suction pipeline from the deaerator to the booster pumps
No. 1 and 2 there is water sampling for feed water quality chemical
monitoring with information input to the ICMS.
On the BFPs common discharge pipeline there is double pressure
measurement LAB20CP001, LAB20CP002 with information input to the
ICMS for monitoring and for automatic changeover to the standby
BFP.
According to the ICMS FAT held in Singapore pressure difference
on boiler feed control station LAB20AA001 signal is used for boiler
feeding closed loop control. Double pressure difference measurement
LAB20CP004 and LAB20CP005 is used for that purpose. Additionally
water pressure measurements before and after boiler feed control
station LAB20CP003 and LAB20CP006 are transmitted into ICMS for
monitoring. Pressure signal LAB20CP003 comes to boiler hardwired
desk. There is also a feed water pressure measurement LAB20CP501
with local indication downstream of boiler feed control station
LAB20AA001.
For feed water flow measurement from the HP heaters to the
boiler, on the pipeline upstream of economizer, there is an orifice
plate with double flow measuring transmitters LAB30CF001,
LAB30CF002, pressure transmitter LAB30CP001 and temperature
transmitter LAB30CT001 with information input to the ICMS. A
pressure signal is taken from orifice plate + chamber. Temperature
is monitored downstream of orifice plate. Signals from the pressure
and temperature transmitters are used in the ICMS for feed water
flow measurement correction.
On the pipeline upstream of the boiler (downstream of check
valve LAB30AA701) there is double feed water temperature
measurement LAB30CT002, LAB30CT003 with information input to the
ICMS for monitoring purposes.
On the pipeline upstream of the boiler (downstream of check
valve LAB30AA701 there is water sampling for feed water quality
chemical monitoring with information input to the ICMS.
On the common pipeline to the superheater sprays there is double
feed water pressure measurement LAE01CP003, LAE01CP004 with
information input to the ICMS for monitoring and for signal
generation to spray water pressure regulator circuit.
There is a feed water flow measurement on the common line for
boiler superheater sprays (piping system LAE01). That flow signal
is used for boiler feeding closed loop control that is why the
signal is redundant. To provide the flow measurement range 0-100
t/h two transmitters are used in both measurement channels. The
transmitters LAE01CF001 and LAE01CF002 provide the pressure
difference measurement within the range 0.025-0.4 kgf/cm2 that
corresponds with water flow measurement within the range 25-100
t/h. The transmitters LAE01CF011 and LAE01CF012 provide the
pressure difference measurement within the range 0-0.025 kgf/cm2
that corresponds with water flow measurement within the range 0-25
t/h. For feed water flow measurement correction pressure signal
LAE01CP001 and temperature signal LAE01CT001 are used. Pressure
LAE01CP001 is measured before the nozzle very close to it,
temperature LAE01CT001 is measured after the nozzle.
On the common pipeline to the reheater sprays there is double
feed water pressure measurement LAF01CP002, LAF01CP003 with
information input to the ICMS for monitoring and for signal
generation to spray water pressure regulator circuit.
To measure the feed water flow for the reheater sprays, on the
common pipeline there is an nozzle with double flow measuring
transmitters LAF01CF001, LAF01CF002 with information input to the
ICMS for closed loop control. Pressure transmitter LAF01CP001 and
temperature transmitter LAF01CT001 are used for feed water flow
measurement correction. The pressure signal is taken before the
nozzle very close to it. Temperature is measured downstream of the
nozzle.
To conduct guarantee tests the following measurements are
provided:Flow rate, temperature and pressure of feed water to
boiler - LAB30CF401, LAB30CT401, LAB30CP401;
Flow rate, temperature and pressure of feed water to boiler
superheater spray LAE01CF401, LAE01CT401, LAE01CP401;
Flow rate, temperature and pressure of feed water to boiler
reheater spray LAF01CF401, LAF01CT401, LAF01CP401;Flow rate,
temperature and pressure of feed water to boiler reheater spray
from BFPs intermediate stage LAF20CF401, LAF20CT401, LAF20CP401.II
CONTROL CONDITIONS.
Feed water pipelines system operates continuously when the
boiler unit is in operation.
2.1 Boiler feed pump (BFP) LAC11AP002 (LAC12AP002,
LAC13AP002).
Three boiler feed pumps are installed: LAC11AP002, LAC12AP002,
LAC13AP002, two duty and one standby.
For each pump, one of the following modes can be selected:
"Operating-1", "Operating-2", "Standby" or "Shutdown".
2.1.1 Boiler feed pump LAC11AP002 (LAC12AP002, LAC13AP002) is
controlled by the ICMS.
2.1.2 All boiler feed pumps are automatically tripped, with the
inhibit of standby BFP starting, upon operation of the unit
protections in the following cases:
when the level in any HP heater rises to the II limit.
In case of boiler drum high level and deaerator low level local
interlocks and protection are provided: opening gate valves on
emergency discharge line from boiler drum, tripping BFP by its
personal protection for reducing suction pressure.
2.1.3 Boiler feed pump LAC11AP002 (LAC12AP002, LAC13AP002)
automatic tripping by its own protections is also provided.
2.1.4 BFP electric motor start is inhibited in the following
cases:
gate valve LAB11AA201 (LAB12AA201, LAB13AA201) on BFP suction is
closed;
gate valve LAB11AA202 (LAB12AA202, LAB13AA202) on BFP discharge
is open when the pressure in the BFPs common discharge pipeline is
below the specified value;
minimum flow valve LAC11AA003 (LAC12AA003, LAC13AA003) on BFP
recirculaion line is closed;
BFP lubricating oil pressure is below the specified value;
Valve LAF11AA201 (LAF12AA201, LAF13AA201) on extraction from the
BFP intermediate stage is open.
Note: On BFP start command, the opening of gate valve on cooling
water supply to BFP lubricating oil coolers, and the starting of
BFP lubricating system starting oil pump takes place. When the
lubricating oil pressure in the system rises above the specified
value, and on condition that recirculation valve is open, the BFP
electric motor is switched ON. After BFP electric motor is switched
ON, the gate valve on pump discharge is opened, the BFP capacity
regulator is connected to hydraulic coupling scoop.
2.1.5 BFP automatic starting in Standby mode is provided upon
feed water pressure drop in the common discharge header, or upon
emergency shutdown of the operating BFP.
2.2 BFP hydraulic coupling LAC11AA001 (LAC12AA001,
LAC13AA001).
The BFP capacity regulation system ensures the required feed
water flow during boiler startup, shutdown and on-load operation,
is implemented by the ICMS and controls the BFP hydraulic couplings
operation.
2.2.1 BFP hydraulic coupling LAC11AA001 (LAC12AA001, LAC13AA001)
is controlled by the ICMS, and participates in protection,
interlocking and control process algorithms.
2.2.2 When the BFP electric motor is shut down, the hydraulic
coupling LAC11AA001 (LAC12AA001, LAC13AA001) is disabled and is
automatically closed (pump hydraulic coupling scoop is moved to the
minimum position).
2.2.3 When the BFP electric motor is changed over to Standby
mode, its hydraulic coupling LAC11AA001 (LAC12AA001, LAC13AA001) is
automatically opened (pump hydraulic coupling scoop is moved to the
maximum position) (implemented in BFP unit control systems)2.2.4
Hydraulic coupling LAC11AA001 (LAC12AA001, LAC13AA001) can be
remote (manually) closed at all times, and can be opened if this is
not prohibited by protection, interlock, or regulator commands.
2.3 Gate valve LAB11AA201 (LAB12AA201, LAB13AA201) on BP
suction.
2.3.1 Gate valve LAB11AA201 (LAB12AA201, LAB13AA201) on BP
suction is controlled by the ICMS, and participates in interlocking
process algorithms.
Closing of gate valve LAB11AA201 (LAB12AA201, LAB13AA201) on BP
suction is prohibited when the BFP is in either running or in
standby mode.
Gate valve LAB11AA201 (LAB12AA201, LAB13AA201) on BP suction can
be remote (manually) opened at all times, and can be closed if this
is not prohibited by commands from interlocking circuits.
2.4 Minimum flow valve LAC11AA003 (LAC12AA003, LAC13AA003) on
BFP recirculation line (BFP P&I Diagram
UBEX1-M1&2-M-52-LAC-0001, UBEX1-M1&2-M-52-LAC-0002,
UBEX1-M1&2-M-52-LAC-0003).2.4.1 Minimum flow valve LAC11AA003
(LAC12AA003, LAC13AA003) on BFP recirculation line is controlled by
the ICMS, and participates in protection and interlocking process
algorithms.
2.4.2 Minimum flow valve LAC11AA003 (LAC12AA003, LAC13AA003) on
BFP recirculation line is automatically opened when the required
water flow through the BFP reduces to the specified value. When the
minimum flow valve LAC11AA003 (LAC12AA003, LAC13AA003) fails to
open in case of the required water flow through the BFP reducing to
the minimum allowable value, the protection acting on the BFP
shutdown operates with a time delay of 15 s.
2.4.3 Minimum flow valve LAC11AA003 (LAC12AA003, LAC13AA003) on
BFP recirculation line is automatically opened when the BFP is
changed over to standby mode, or when the BFP electric motor is
de-energized.
2.4.4 Minimum flow valve LAC11AA003 (LAC12AA003, LAC13AA003) on
BFP recirculation line is automatically closed when the water flow
through the BFP rises to the specified value with a time delay of 3
min.
2.5 Gate valve LAB11AA202 (LAB12AA202, LAB13AA202) on BFP
discharge.2.5.1 Gate valve LAB11AA202 (LAB12AA202, LAB13AA202) on
the BFP discharge is controlled by the ICMS, and participates in
protection and interlocking process algorithms.
2.5.2 Gate valve LAB11AA202 (LAB12AA202, LAB13AA202) on BFP
discharge is automatically opened when the BFP electric motor is
energized, or if the BFP mode selector switch is in Operating-1,
Operating-2 position.
2.5.3 Gate valve LAB11AA202 (LAB12AA202, LAB13AA202) is
automatically opened when the pressure in the BFPs common discharge
pipeline rises above the specified value, or if the BFP mode
selector switch is in Standby position.
2.5.4 Gate valve LAB11AA202 (LAB12AA202, LAB13AA202) is
automatically closed when the BFP electric motor is
de-energized.
2.6 Valve LAB11AA212 (LAB12AA212, LAB13AA212) on gate valve
bypass on BFP discharge.
2.6.1 Valve LAB11AA212 (LAB12AA212, LAB13AA212) on gate valve
bypass on BFP discharge is controlled by ICMS.2.6.2 The valve
LAB11AA212 (LAB12AA212, LAB13AA212) can be remote (manually) closed
and opened at all times.2.7 Gate valve LAF11AA201 (LAF12AA201,
LAF13AA201) on pipeline from BFP intermediate stage.
2.7.1 Gate valve LAF11AA201 (LAF12AA201, LAF13AA201) on the
pipeline from the BFP intermediate stage is controlled by the ICMS,
and participates in interlocking process algorithms.
2.7.2 Gate valve LAF11AA201 (LAF12AA201, LAF13AA201) is
automatically closed when the BFP electric motor is
de-energized.
2.7.3 Gate valve LAF11AA201 (LAF12AA201, LAF13AA201) can be
remote (manually) closed at all times, and can be opened if this is
not prohibited by commands from pump protection circuits.
2.8 Valve LFN32AA201 (LFN32AA202, LFN32AA203) on hydrazine
supply to booster pump suction.
Valve LFN32AA201 (LFN32AA202, LFN32AA203) on hydrazine supply to
the booster pump suction is opened when the feed water chemical
dosing is required when the BFP is running.
2.8.1 Valve LFN32AA201 (LFN32AA202, LFN32AA203) is controlled by
the ICMS.
2.8.2 Valve LFN32AA201 (LFN32AA202, LFN32AA203) can be remote
(manually) closed at all times, and can be opened, if the gate
valve LAB11AA201, LAB12AA201, LAB13AA201 on respective pump suction
is open.2.9 Valve LFN82AA201 (LFN82AA202, LFN82AA203) on ammonia
supply to booster pump suction.
Valve LFN82AA201 (LFN82AA202, LFN82AA203) on ammonia supply to
the booster pump suction is opened when the feed water chemical
dosing is required when the BFP is running.
2.9.1 Valve LFN82AA201 (LFN82AA202, LFN82AA203) is controlled by
the ICMS.
2.9.2 Valve LFN82AA201 (LFN82AA202, LFN82AA203) can be remote
(manually) closed at all times, and can be opened, if the gate
valve LAB11AA201, LAB12AA201, LAB13AA201 on respective pump suction
is open.2.10 Gate valves LAB20AA210, LAB31AA201 on the boiler feed
water control valve station.
The boiler-filling line is used for filling up to the start-up
level prior to boiler start-up, and for boiler makeup after
ignition until the boiler is changed over to continuous feeding
mode (at respective steam load). After that, the boiler is changed
over to feeding from the start-up line LAB31. After boiler steam
load rise to the level when start-up line operation is completed
(lighting-up FRV LAB31AA001 is practically wide open), the boiler
is changed over to feeding from the main line LAB20.
2.10.1 Each gate valve LAB20AA201, LAB31AA201 at the boiler feed
water control valve station is controlled by the ICMS, and
participates in protection and functional-group control process
algorithms.
2.10.2 Gate valves LAB20AA201, LAB31AA201 automatically close in
the event of protections acting on the boiler shutdown operation
when the level in boiler drum rises or lowers to the emergency
limits.
2.10.3 Gate valves LAB20AA201, LAB31AA201 opening is prohibited
when the gate valves HAD97AA201 and HAD98AA201 on water-economizer
recirculation line or gate valve LAB33AA201 on boiler filling line
by LP heater No. 2 condensate recovery pumps are not closed.
2.10.4 Each gate valve LAB30AA201, LAB31AA201, LAB32AA201 can be
remote (manually) closed at all times, and can be opened if this is
not prohibited by commands from the protection circuits.
2.11 Control valves LAB20AA001, LAB31AA001 at the boiler feed
water control valve station.
The boiler feed regulator maintains the required level in boiler
drum during boiler startup, shutdown and on-load operation, and is
implemented by the ICMS and controls the operation of boiler feed
station control valves.
2.11.1 Each control valve LAB20AA001, LAB31AA001 of boiler feed
control station is controlled by the ICMS, and participates in
protection, regulation and functional-group control process
algorithms.
2.11.2 Control valves LAB20AA001, LAB31AA001 are automatically
closed (with regulators disabled) upon operation of protections
acting on the boiler shutdown in the event of emergency level rise
or drop in the boiler drum.
2.11.3 Each control valve LAB20AA001, LAB31AA001 of boiler feed
station can be remote (manually) closed at all times, and can be
opened if this is not prohibited by commands from the protection
circuits.
2.12 Gate valve LAB33AA201 on boiler filling line with water by
LP Heater No.2 condensate recovery pumps.
Boiler-filling with deaerated water prior to start-up can be
executed without BFP activation, by means of LP Heater No.2
condensate recovery pumps, participating in pre-start-up deaeration
of feed water.
2.12.1 Gate valve LAB33AA201 is controlled by ICMS according to
Start-up operating instructions developed by Commissioning
organization.
2.12.2 Gate valve LAB33AA201 is automatically closed on command
to open the gate valve LAB31AA201 (LAB20AA210) of boiler feed water
control valve station, and only after its full closing and
de-energizing of its drive motor, the opening of gate valve
LAB31AA201 (LAB20AA210) is enabled.2.13 Gate valve LAE01AA201 on HP
feed water supply for the superheater sprays.
Gate valve LAE01AA201 on feed water supply for the superheater
sprays is opened when the superheater steam rated parameters are
reached.
2.13.1 Gate valve LAE01AA201 is controlled by the ICMS, and
participates in interlocking and functional-group control process
algorithms.
2.13.2 Opening of gate valve LAE01AA201 is prohibited when the
gate valve LAE02AA201 on the deaerator spray water recirculation
line to the deaerator is not closed.
2.13.3 Gate valve LAE01AA201 can be remote (manually) closed at
all times, and can be opened if this is not prohibited by commands
from interlocking circuits.
2.14 Gate valve LAE02AA201 on the HP spray water recirculation
to the deaerator.
Gate valve LAE02AA201 on spray water recirculation to the
deaerator is opened during unit start-up after boiler ignition.
2.14.1 Gate valve LAE02AA201 is controlled by the ICMS, and
participates in interlocking and functional-group control process
algorithms.
2.14.2 Opening of gate valve LAE02AA201 is prohibited when the
gate valve LAE01AA201 on water supply for the superheater sprays is
not closed.
2.14.3 Gate valve LAE02AA201 is automatically opened when
control valve LAE02AA001 commences opening, provided that gate
valve LAE01AA201 is closed, and is automatically closed with a time
delay of 30 s upon control valve LAE02AA001 closing. 2.14.4 Gate
valve LAE02AA201 can be remote (manually) closed at all times, and
can be opened if this is not prohibited by commands from
interlocking circuits.
2.15 Control valve LAE02AA001 for HP spray water recirculation
to the deaerator.
Deaerator HP spray water recirculation regulator maintains the
required spray water pressure differential on HP spray control
valves depending on the pressure in the boiler drum during unit
startup. This is implemented by the ICMS and controls the operation
of the control valve for deaerator HP spray water
recirculation.
2.15.1 Control valve LAE02AA001 for HP spray water recirculation
to the deaerator is controlled by the ICMS, and participates in
regulation and functional-group control process algorithms.
2.15.2 Control valve LAE02AA001 can be remote (manually) closed
and opened at all times.
2.16 Gate valve LAF01AA201 on the reheater starting LP
sprays.
Gate valve LAF01AA201 on the reheater starting LP spray
attemperators is opened during unit start-up after boiler
ignition.
2.16.1 Gate valve LAF01AA201 is controlled by the ICMS, and
participates in protection and functional-group control process
algorithms.
2.16.2 Gate valve LAF01AA201 is automatically closed upon
operation of protections acting on the boiler shutdown.
2.16.3 Gate valve LAF01AA201 can be remote (manually) closed at
all times, and can be opened if this is not prohibited by commands
from the protection circuits and the boiler load is less than 30%
of rated value.
2.17 Gate valve LAF02AA201 on the LP spray water recirculation
to the deaerator.
Gate valve LAF02AA201 on LP spray water recirculation to the
deaerator is opened during unit start-up after boiler ignition.
2.17.1 Gate valve LAF02AA201 is controlled by the ICMS, and
participates in interlocking and functional-group control process
algorithms.
2.17.2 Gate valve LAF02AA201 is automatically opened when
control valve LAF02AA001 commences opening, and is automatically
closed with a time delay of 30 s upon control valve LAF02AA001
closing. 2.17.3 Gate valve LAF02AA201 can be remote (manually)
closed at all times, and can be opened if this is not prohibited by
commands from interlocking circuits.
2.18 Control valve LAF02AA001 for LP spray water recirculation
to the deaerator.
Deaerator LP spray water recirculation regulator maintains the
required spray water pressure differential on starting LP spray
control valves depending on the pressure in the boiler drum during
unit startup. This is implemented by the ICMS and controls the
operation of the control valve for deaerator starting LP spray
water recirculation.
2.18.1 Control valve LAF02AA001 for starting LP spray water
recirculation to the deaerator is controlled by the ICMS, and
participates in regulation and functional-group control process
algorithms.
2.18.2 Control valve LAF02AA001 can be remote (manually) closed
and opened at all times.III INTERRELATION WITH OTHER SYSTEMS.
1) P&I Diagram of deaerator plant pipelines
UBEX1-M1&2-M-52-LAA-1355
2) P&I Diagram of boiler drains, vents and auxiliary
pipelines UBEX1-M1&2-M-52-LCQ-1359
3) P&I Diagram of turbine hall steam line and pipe
line drains UBEX1-M1&2-M-52-LFC-1360
4) P&I Diagram of water path pipelines
UBEX1-M1&2-M-52-HAD-0001
5) P&I Diagram of feed water chemical dosing pipelines
UBEX1-M1&2-M-52-LFN-1071, UBEX1-M1&2-M-52-LFN-1080
6) P&I Diagram of steam and water sampling pipelines
UBEX1-M1&2-M-52-QU-1365
7) P&I Diagram of HP heaters system
UBEX1-M1&2-M-52-LAD-0008
8) P&I Diagram of LP heaters system
UBEX1-M1&2-M-52-LCC-0007
9) P&I Diagram of BFP pipelines
UBEX1-M1&2-M-52-LAC-0001,
UBEX1-M1&2-M-52-LAC-0002,
UBEX1-M1&2-M-52-LAC-0003
10) P&I Diagram of feed water pipelines
UBEX1-M1&2-M-52-LA-1354-311) P&I Diagram of boiler
superheater sprays system UBEX1-M1&2-M-52-LAE-1354-212) P&I
Diagram of boiler reheater sprays system
UBEX1-M1&2-M-52-LAF-1354- 2:
17I. PI-.
171.1 .
171.2 .
201.3 .
23II. .
232.1 () LAC11AP002 (LAC12AP002, LAC13AP002).
242.2 LAC11AA001 (LAC12AA001, LAC13AA001) .
242.3 LAB11AA201 (LAB12AA201, LAB13AA201) .
252.4 LAC11AA003 (LAC12AA003, LAC13AA003) (PI-
UBEX1-M1&2-M-52-LAC-0001, UBEX1-M1&2-M-52-LAC-0002,
UBEX1-M1&2-M-52-LAC-0003).
252.5 LAB11AA202 (LAB12AA202, LAB13AA202) .
262.6 LAB11AA212 (LAB12AA212, LAB13AA212) .
262.7 LAF11AA201 (LAF12AA201, LAF13AA201) .
262.8 LFN32AA201 (LFN32AA202, LFN32AA203) .
262.9 LFN82AA201 (LFN82AA202, LFN82AA203) .
272.10 LAB20AA210, LAB31AA201 .
272.11 LAB20AA001, LAB31AA001 .
282.12 LAB33AA201 -2.
282.13 LAE01AA201 / ( ).
292.14 LAE02AA201 / ( ).
292.15 LAE02AA001 / .
302.16 LAF01AA201 / ( ).
302.17 LAF02AA201 / ( ).
302.18 LAF02AA001 / .
32III. .
I. PI-.
1.1 .
(LAB, LAE, LAF) , -I, ( ), , -I .
1.2 .
500 , LAB11AA201, LAB12AA201, LAB13AA201 - LAC11AT120,
LAC12AT120, LAC13AT120. . 15 LFN32AA201 (LFN32AA202, LFN32AA203) .
15 LFN82AA201 (LFN82AA202, LFN82AA203) . LAB11AA601 (LAB12AA601,
LAB13AA601) 22 / , . LFC23BR001 . LAC11AP002 (LAC12AP002,
LAC13AP002) 250 , - LAC11AT121 ( LAC12AT121, LAC13AT121). .
LAC11AA001 ( LAC12AA001, LAC13AA001) .
200/250 300 . LAC11AA702 (LAC12AA702, LAC13AA702) LAB11AA202
(LAB12AA202, LAB13AA202) . 20 LAB11AA202 (LAB12AA202, LAB13AA202)
LAB11AA212 (LAB12AA212, LAB13AA212) LAB11BP001 (LAB12 BP001, LAB13
BP001). - LAB11CP002 (LAB12 CP002, LAB13 CP002) . LAC11AA702
(LAC12AA702, LAC13AA702) 100/150 ( ), LAC11AA003 (LAC12AA003,
LAC13AA003) , LAB14AA509 (LAB15AA509, LAB16AA509) , LAB14AA701
(LAB15AA701, LAB16AA701) LAB14BP002 (LAB15BP002, LAB16BP002) .
300 .
:
( 300), LAB20AA210 LAB20AA001;
( 150), LAB31AA201 LAB31AA001;
300 .
LAB30CF001 LAB30AA701. 250 . -2, 150 , LAB33AA201 , LAB33AA701,
LAB33AA501 LAB33AA502, LAB33AA503 . , .
:
-I 125;
50;
100;
100;
/ ( ) 100, LAE01AA201 LAE01AA701. LAE01AA201 100 LAE01BP001, .
LAE01AA201. / ( ) 65, LAE02AA201 LAE02AA001 .
/ ( ) 100, LAF01AA201 , LAF01AA701 LAF01BP001 , . 65, LAF02AA201
LAF02AA001 .
65 , LAF11AA701 (LAF12AA701, LAF13AA701) LAF11AA201 (LAF12AA201,
LAF13AA201) .
65 :
25;
/ ( ) 65.
. . .1.3 .
LAB11CP001 (LAB12CP001, LAB13CP001) .
LAB11CP002, (LAB12CP002, LAB13CP002) , , . LAB11CT002
(LAB12CT002, LAB13CT002) .
2 .
LAB20CP001, LAB20CP002 .
, , () LAB20AA001. LAB20CP004 LAB20CP005. LAB20CP003 LAB20CP006
. LAB20CP003 . LAB20AA001 LAB20CP501 .
LAB30CF001, LAB30CF002, LAB30CP001 LAB30CT001 . + . . .
( ) LAB30CT002, LAB30CT003 .
( ) .
LAE01CP003, LAE01CP004 .
( LAE01). , . 0-100 / . LAE01CF001 LAE01CF002 0,025-0,4 /2,
25-100 /, LAE01CF011 LAE01CF012 0-0,025 /2, 0-25 /. LAE01CP001
LAE01CT001, . LAE01CP001 , LAE01CT001 .
LAF01CP002, LAF01CP003 .
( LAF01). , - LAF01CF001 LAF01CF002. LAF01CP001 LAF01CT001.
LAF01CP001 , LAF01CT001 .
:
, - LAB30CF401, LAB30CT401, LAB30CP401;
, LAE01CF401, LAE01CT401, LAE01CP401;
, LAF01CF401, LAF01CT401, LAF01CP401;
, LAF20CF401, LAF20CT401, LAF20CP401.
II. .
.
2.1 () LAC11AP002 (LAC12AP002, LAC13AP002).
: LAC11AP002, LAC12AP002, LAC13AP002. , .
: "-1", "-2", "" "".
2.1.1 LAC11AP002 (LAC12AP002, LAC13AP002) .
2.1.2 , :
II- .
, : , .2.1.3 LAC11AP002 (LAC12AP002, LAC13AP002) .
2.1.4 :
LAB11AA201 (LAB12AA201, LAB13AA201) ;
LAB11AA202 (LAB12AA202, LAB13AA202) , ;
LA11AA003 (LA12AA003, LA13AA003) ;
LAF11AA201 (LAF12AA201, LAF13AA201) ;
.
: ( ( . , . , .
2.1.5 "" .
2.2 LAC11AA001 (LAC12AA001, LAC13AA001) .
, , .
2.2.1 LAC11AA001 (LAC12AA001, LAC13AA001) , , .
2.2.2 LAC11AA001 (LAC12AA001, LAC13AA001) ( ).
2.2.3 "" LAC11AA001 (LAC12AA001, LAC13AA001) ( ) ( ).2.2.4 ()
LAC11AA001 (LAC12AA001, LAC13AA001) , , .
2.3 LAB11AA201 (LAB12AA201, LAB13AA201) .
2.3.1 LAB11AA201 (LAB12AA201, LAB13AA201) .
2.3.2 LAB11AA201 (LAB12AA201, LAB13AA201) .
2.3.3 () LAB11AA201 (LAB12AA201, LAB13AA201) , .
2.4 LAC11AA003 (LAC12AA003, LAC13AA003) (PI-
UBEX1-M1&2-M-52-LAC-0001, UBEX1-M1&2-M-52-LAC-0002,
UBEX1-M1&2-M-52-LAC-0003).2.4.1 LAC11AA003 (LAC12AA003,
LAC13AA003) .
2.4.2 LAC11AA003 (LAC12AA003, LAC13AA003) . LAC11AA003
(LAC12AA003, LAC13AA003) 15 , .
2.4.3 LAC11AA003 (LAC12AA003, LAC13AA003) .
2.4.4 LAC11AA003 (LAC12AA003, LAC13AA003) 3 .
2.5 LAB11AA202 (LAB12AA202, LAB13AA202) .
2.5.1 LAB11AA202 (LAB12AA202, LAB13AA202) .
2.5.2 LAB11AA202 (LAB12AA202, LAB13AA202) , -1, -2.
2.5.3 LAB11AA202 (LAB12AA202, LAB13AA202) , .
2.5.4 LAB11AA202 (LAB12AA202, LAB13AA202) .
2.6 LAB11AA212 (LAB12AA212, LAB13AA212) .
2.6.1 LAB11AA212 (LAB12AA212, LAB13AA212) .
2.6.2 () LAB11AA212 (LAB12AA212, LAB13AA212) .
2.7 LAF11AA201 (LAF12AA201, LAF13AA201) .
2.7.1 LAF11AA201 (LAF12AA201, LAF13AA201) .
2.7.2 LAF11AA201 (LAF12AA201, LAF13AA201) .
2.7.3 () LAF11AA201 (LAF12AA201, LAF13AA201) , .
2.8 LFN32AA201 (LFN32AA202, LFN32AA203) .
LFN32AA201 (LFN32AA202, LFN32AA203) .
2.8.1 LFN32AA201 (LFN32AA202, LFN32AA203) .
2.8.2 () LFN32AA201 (LFN32AA202, LFN32AA203) , LAB11AA201
(LAB12AA201, LAB13AA201) .
2.9 LFN82AA201 (LFN82AA202, LFN82AA203) .
LFN82AA201 (LFN82AA202, LFN82AA203) .2.9.1 LFN82AA201
(LFN82AA202, LFN82AA203) .
2.9.2 () LFN82AA201 (LFN82AA202, LFN82AA203) , LAB11AA201
(LAB12AA201, LAB13AA201) .
2.10 LAB20AA210, LAB31AA201 .
, ( ). , LAB31 ( LAB31AA001 ), LAB20.
2.10.1 LAB20AA210, LAB31AA201 - .
2.10.2 LAB20AA210, LAB31AA201 , .
2.10.3 LAB20AA210, LAB31AA201 HAD97AA201 HAD98AA201 LAB33AA201
-2.
2.10.4 () LAB20AA210, LAB31AA201 , .
2.11 LAB20AA001, LAB31AA001 .
, .
2.11.1 LAB20AA001, LAB31AA001 , - .
2.11.2 , , LAB20AA001, LAB31AA001 ( ).
2 11.3 () LAB20AA001, LAB31AA001 , .
2.12 LAB33AA201 -2.
-2, .
2.12.1 LAB33AA201 , - .
2.12.2 LAB33AA201 LAB31AA201 (LAB20AA210) LAB31AA201
(LAB20AA210).
2.13 LAE01AA201 / ( ).
LAE01AA201 / ( ) .
2.13.1 LAE01AA201 / - .
2.13.2 LAE01AA201 / LAE02AA201 .
2.13.3 () LAE01AA201 / , .
2.14 LAE02AA201 / ( ).
LAE02AA201 / ( ) .
2.14.1 LAE02AA201 / - .
2.14.2 LAE02AA201 / LAE01AA201 / ( ).
2.14.3 LAE02AA201 LAE02AA001, LAE01AA201, 30 LAE02AA001.
2.14.4 () LAE02AA201 / , .
2.15 LAE02AA001 / .
/ / , / .
2.15.1 LAE02AA001 / - .
2.15.2 () LAE02AA001 / .
2.16 LAF01AA201 / ( ).
LAF01AA201 .
2.16.1 LAF01AA201 / - .
2.16.2 LAF01AA201 / , .
2.16.3 () LAF01AA201 / , 30% .
2.17 LAF02AA201 / ( ).
LAF02AA201 / ( ) .2.17.1 LAF02AA201 / - .
2.17.2 LAF02AA201 LAF02AA001 30 LAF02AA001.
2.17.3 () LAF02AA201 / .
2.18 LAF02AA001 / .
/ / , / .
2.18.1 LAF02AA001 / - .
2.18.2 () LAF02AA001 / .
III. .
1) PI- UBEX1-M1&2-M-52-L-1355
2) PI- , , -
UBEX1-M1&2-M-52-LCQ-1359
3) PI-
UBEX1-M1&2-M-52-LFC-1360
4) PI-
UBEX1-M1&2-M-52-HAC-0001
5) PI-
UBEX1-M1&2-M-52-LFN-1071, UBEX1-M1&2-M-52-LFN-1080
6) PI- UBEX1-M1&2-M-52-QU-1365
7) PI- UBEX1-M1&2-M-52-LAD-0008
8) PI- UBEX1-M1&2-M-52-LCC-0007
9) PI- UBEX1-M1&2-M-52-LAC-0001,
UBEX1-M1&2-M-52-LAC-0002, UBEX1-M1&2-M-52-LAC-0003
10) PI- UBEX1-M1&2-M-52-LA-1354-311) PI-
UBEX1-M1&2-M-52-LAE-1354-2
12) PI-
UBEX1-M1&2-M-52-LAF-1354-2
RUSSIA ( MOSCOW
_1135075828.doc
