Lilama Aux SB Proc Rev 0.pdf

Aux Boiler Steam Blow Procedure

Document No. 2012111272-SB-PROC Rev. 0

Vung Ang 1 Project Steam Blow Ha Tinh, Viet Nam

Viet Nam Machinery Installation Corporation Approval Print Name:

Signature:

Date:

0 04/16/2013 Issued for review R. Emery J. Haldane

Revision Date Reason for Issue Originator Approved by

B&W Fluid Dynamics Steam Blow Procedure Vung Ang 1 Project Steam Blow

Issue Date: April 16, 2013 Revision: 0 Page 2 of 30

TABLE OF CONTENTS

Section

1 Scope of work

2 Safety and risk assessment

3 Preparations prior to steam blowing

4 Steam blow sequence and procedure

Appendix A Steam Blow Marked up P&IDs

Appendix B Pre-Blow Safety Checklist

Appendix C Continuous Blow MCR Data

Appendix D Construction Activities

Appendix E B&W temporary piping isometrics

Appendix F Reference Materials

REVISION HISTORY

Revision 0 Issued April 16, 2013 Issued for review.



1 SCOPE

1.0 General Information 1.0.1 The steam cleaning method of choice for the Boiler Feed Pump Turbines, Aux steam

to CRH, AUX back-blow will be a continuous steam blow. Firing rates will control the steam production of the Aux boiler to provide the steam for these blows. Aux Boiler must have minimum pressure of 0.8 MPag. An Orifice plate will be utilized to maintain boiler pressure and control the mass rate.

1.0.2 This document is intended to define the activities required to complete the steam

blow program and to define the parties responsible for completion of those activities.

1.0.3 Target blowing continues until a polished brass target plate is withdrawn from the system that meets the acceptance criteria.

1.0.4 Piping systems to be blown include:

1.0.4.1 Target Blows:

1.0.4.1.1 Boiler Feed Pump Turbine supply from Aux steam supply.

(Continuous Blow 1)

1.0.4.1.2 Boiler Feed Pump Turbine supply from Aux steam through CRH. (Continuous Blow 2)

1.0.4.1.3 Gland Seal Steam - HP A, HP B, IP, LP A and LP B.

(Continuous blow 3)

1.0.4.2 Service Blows:

1.0.4.2.1 Deaerator from aux boiler through BFPT header.

1.0.4.2.2 Deaerator from aux boiler.

1.0.4.2.3 #2 HP heater header from CRH back blow.

1.0.4.2.4 Boiler bottoms header from aux boiler.

1.0.4.3 Piping not blown should be cleaned by other methods (aqua lazing). Typically on previous power projects, lines that cannot be blown with steam have been cleaned with high pressure (100 bar) water. To accomplish this type of cleaning, access points need to be planned. Typically they are either left out sections of pipe, cut out driplegs, etc. See Appendix F. 1.0.4.3.1 #1 Extraction Steam

1.0.4.3.2 #3 Extraction Steam

1.0.4.3.3 #4 Extraction Steam upstream of deaerator connection

1.0.4.3.4 HFO Atomizing

1.0.4.3.5 HFO Preheating



1.0.4.3.6 Firefighting of coal pulverizing system

1.0.4.3.7 Air preheat soot blowers

1.0.4.3.8 CRH to Aux Steam Header

1.0.4.3.9 HP Cylinder Preheating

1.0.4.3.10 Portion of #2 Extraction Steam, upstream of tie in with aux steam.

1.0.5 Steam blowing occurs until the cleanliness criteria described in section 4 of this

document is reached. No water injection thermal cycling is planned for any of the piping systems.

1.0.6 The steam will be quenched prior to venting to atmosphere for the continuous blows

to reduce velocity and temperature.



1.1 B&W Fluid Dynamics Scope of Supply

1.1.1 Engineering package consisting of detailed step-by step procedure addressing blow sequence, process flow diagrams, required mass flow rates, thermal cycle process, CFR calculations, velocities, exit points, cleanliness criteria, safety, bill of materials and isometric drawings for Client and BWFD supplied temporary piping and equipment. Note: common package will be issued for both Units, with some minor variance to temporary piping arrangement and equipment numbers

1.1.2 Aux steam blow piping and equipment on-site for 45 days for Aux System Blows (for both Units). Note: Aux Blow Equipment can remain onsite for use during Main Boiler Steam Blows at no additional cost to Client. This equipment includes:

1.1.3 Up to 200 feet of standard inventory pipe for installation downstream of the temporary Blow Valve. This includes standard length 19 ft flanged Class 150 temporary steam blow pipe spools as supplied by BWFD up to 24” in diameter

1.1.3.1 One (1) Lg standard wet noise suppressor, capable of venting up to 500,000 lbs/hr of steam.

1.1.3.2 Adequate number of integrated quenching systems for use with standard suppressor

1.1.3.3 Studs, nuts, gaskets for all BWFD temporary equipment

1.1.3.4 Fifty (50) polished brass targets

1.1.3.5 Two (2) Pneumatic Target Inserter Devices for use with supplied targets

1.1.3.6 Design of two (2) Orifice Plates

1.1.4 One (1) round trip mobilization / freight for BWFD supplied equipment to Hai Phong Port. It is estimated that six (6) containers are required for mobilizing all required steam blow equipment above – one (1) container for Aux System Blows and five (5) containers for Main Boiler Steam Blows

1.1.5 Manpower (Onsite Representation) during Steam Blows of Unit 1 Auxiliary System:

1.1.5.1 Rig-Up: One (1) Field Technical Advisor, day shift only, for seven (7) days

1.1.5.2 SB Service: Two (2) Field Technical Advisors, 1 per 12 hr shift, for ten (10) days

1.1.5.3 Rig Down: One (1) Field Technical Advisor, day shift only, for two (2) days

1.1.6 Manpower (Onsite Representation during Steam Blows of Unit 2 Auxiliary System:

1.1.6.1 Rig-Up: One (1) Field Technical Advisor, day shift only, for seven (7) days

1.1.6.2 SB Service: Two (2) Field Technical Advisors, 1 per 12 hr shift, for ten (10) days

1.1.6.3 Rig Down: One (1) Field Technical Advisor, day shift only, for two (2) days

1.1.7 Two (2) separate mobilizations of two (2) BWFD Field Technical Advisors to site for Aux System Blows, one (1) mobilization for each Unit



1.2 Lilama Scope of Supply

1.2.1 Pre-commissioning cleaning director, or coordinator, to serve as single point of contact for the steam blow activities

1.2.2 Master commissioning (project) schedule including steam blow activities

1.2.3 Temporary pipe, hose and fittings not included in 1.1.3 above

1.2.4 Design, material and fabrication of any spools required for control valves, flow meters, or any device within the permanent system which would require removal for steam blowing

1.2.5 Design, material and fabrication of any custom spools required to connect the

permanent system to the temporary (standard) steam blow piping provided by BWFD

1.2.6 Design, material and fabrication of any temporary lines required for injection of

thermal cycle water for target blowing (if required)

1.2.7 Blind flanges, if required, to isolate steam flow during the steam blow program

1.2.8 Material and fabrication of pipe supports/ restraints for temporary piping as specified by BWFD engineering package

1.2.9 Utilities including water, air, and electricity

1.2.9.1 Water (service water, fire water or equivalent) for temporary

equipment desuperheating/silencing, including delivery hoses. Connection to BFWD supplied desuperheating devices is 2” NPT. Max required quench water required is 0.1237 m

3/hr.

1.2.9.2 Air supply of 690kPag (~100 psig) for target insertion device. Intermittent

use only

1.2.9.3 Air supply 850kPag (~125 psig) or nitrogen bottle(s) with regulator to clear drip legs of accumulated debris. This air supply must be oil-free, so as not to contaminate the steam system

1.2.9.4 Suitable drain location for un-evaporated quench water from the temporary

steam blow equipment. This water temperature may be up to 93 deg C

1.2.10 Transportation of BWFD steam blow equipment from Hai Phong Port to Vung Ang 1 Project Site, including customs clearance, taxes, and permits (if any)

1.2.11 All supervision, labor, and equipment to unload and reload all temporary steam blowing equipment to/from delivery trucks. The temporary piping is supplied in flanged spools

1.2.12 All supervision, labor, and equipment required to erect, break down, and relocate all

temporary steam blowing equipment as per the erection isometrics and equipment utilization plan

1.2.13 Any modifications and restoration required to the permanent plant systems to

accommodate the cleaning per B&W Fluid Dynamics engineering



1.2.14 Operating and craft personnel as required to operate plant and temporary equipment

as needed during the blows. At least two (2) operators and four (4) craft personnel (two fitters and two helpers) per shift are required

1.2.15 Laydown area for B&W Fluid Dynamics Equipment, including security for equipment

1.2.16 Office space for B&W Fluid Dynamics personnel for the duration of the Steam Blows

1.2.17 Steam at the specified conditions

1.2.18 Safety signs and barriers and temporary insulation as required

1.2.19 Scaffolding as required for accessing valves and targeting devices



2 SAFETY AND RISK ASSESSMENT

2.1 This procedure is designed so pressures in the steam blow temporary piping downstream of the temporary blow valve will not exceed their working pressure. Any valve downstream of a low-pressure temporary spool is to be tagged for open position only.

2.2 Check for the following personnel protection from hot piping:

2.2.1 Piping from the tie-in points to the target insertion locations and near valves that will

be operated are to be wrapped with temporary insulation, such as a single layer of fiberglass or mineral wool, for personnel protection. Temporary flanges are to be left uninsulated so that leaks can be readily detected and repaired.

2.2.2 All hot piping is to be barricaded and labeled as hazard. Also barricade areas at

grade around all drip leg drain valves. These will be opened during the steam blow process.

2.2.3 All flammable material will be moved away from hot piping or shielded by insulation.

2.2.4 All heat sensitive or exposed instrumentation cabling, etc. must be moved away from

hot piping or shielded by insulation.

2.3 Hearing protection will be required near all steam piping during the blow. 2.4 The B&W Fluid Dynamics technical representative and the Lilama steam blow coordinator must

have radio communication with the control room (operations personnel) during the steam blowing execution.

2.5 The Lilama steam blow coordinator will be responsible for overall control of the steam blow

program.

2.6 All scaffolding used for access to drip leg valves, target insertion devices, etc. will be erected to Lilama standards.

2.7 The B&W Fluid Dynamics technical representative will conduct a safety meeting for all personnel

who are working in the vicinity of the steam blow.

2.8 All Lilama and Boiler OEM recommended warm up/operating procedures are to be followed during the steam blow.

2.9 Review hazards associated with the installation and disassembly of the temporary piping:

2.9.1 Working on elevated platform. 2.9.2 Working below platform.

2.9.3 Pinch points involved with assembling large bore flanged joints.

2.9.4 Rigging, lifting, moving large diameter pipe spools.

2.9.5 Rigging, lifting, assembling/disassembling large steam silencer vessel.



3 PREPARATIONS PRIOR TO STEAM BLOWING

3.1 General Notes

3.1.1 Pressure gauges and temperature probes must be functioning on the steam headers. It may be necessary to install additional pressure gauges near the header inlets to be able to verify proper conditions during the steam blow.

3.1.2 It is recommended that all steam headers be completely insulated before steam

blowing begins. Inadequate insulation may lead to prolonged blowing times.

3.2 All drip legs will need to be fully opened during initial warm-up. Drip legs from the bottom of the mud boot are piped to blow down tanks. Subsequently, each location will need to be blown down during the steam blow prior to target insertion. A man-lift, scaffolding or temporary piping will be required at any drip leg not accessible at grade. Drip leg drain steam trap isolation valves shall remain closed until the piping is proven clean. Temperature readings will need to be taken either with an IR heat gun or inline thermal wells to verify open to the blow down tanks. Should a drip leg become plugged, the drip leg will need to be unplugged. Steam will need to be isolated at the source. The drip leg line will need to be cut for inspection and locating the plug. The line will need to be clear either mechanically or with air prior to proceeding with the exhaustive blows. Upon completion of the blows, the blow down tanks will need to be cleaned. Upon completion of the low pressure proving blows on the drip legs, the drip legs can be isolated during the higher pressure blows. However, the drip legs should be cycled open and closed prior to targeting.

3.3 Remove/modify the following:

3.3.1 See Construction Activities in Appendix D.

3.4 The following exit point(s) will be used:

3.4.1 Removed Valves at Boiler Feed Water Pumps

3.4.2 Spread Pipe of HP Heater #2

3.4.3 Elbow at Aux Steam to Deaerator

3.4.4 Cut and rotate elbow at Deaerator

3.4.5 Removed valve at boiler warming

3.5 Install temporary vent piping and supports per BWFD erection isometric drawings (Appendix E).

3.6 Install drain lines from the noise suppressors to the desired drain location.

3.7 Install air supply to the target insertion device. Test for proper operation prior to admitting steam

into header.

3.8 Install scaffolding as required to access the target insertion location, and each drip leg valve.

3.9 Spring can stops need to be addressed.



4 STEAM BLOW SEQUENCE AND PROCEDURE

4.1 Follow and review all steps in section 1 through 3 of this document before any steam blowing begins.

4.2 Steam blow sequence:

4.2.1 Target Blows:

4.2.1.1 Blow 1 - Boiler Feed Pump Turbine supply from Aux steam supply. 4.2.1.2 Blow 2 - Boiler Feed Pump Turbine supply from Aux steam through CRH.

4.2.1.3 Blow 5 - Gland Seal Steam - HP A, HP B, IP, LP A and LP B.

4.2.2 Service Blows:

4.2.2.1 Blow 3 - Deaerator from aux boiler through BFPT header.

4.2.2.2 Blow 4 - Deaerator from aux boiler.

4.2.2.3 Blow 6 - #2 HP heater header from CRH back blow.

4.2.2.4 Blow 7 - Boiler bottoms header from aux boiler.

4.3 Each individual blow is covered in the following sections. The following target criteria applies:

4.3.1 The targets to be exposed shall be made of brass with a finish as close to mirror

quality as possible. 4.3.2 The disturbance factor or cleaning force ratio (CFR) shall be greater than 1.05 in all

areas of the line being targeted.

4.3.3 The target shall be exposed to 20 minutes of a steady flow of steam at the mass flow rates and temperatures specified in this section.

4.3.4 No impacts larger than (0.016”) 0.4 mm are allowed on the target plate.

4.3.5 No more than 10 impacts (0.008”) 0.2mm to (0.016”) 0.4 mm size are allowed on

100 cm^2 target plate surface.

4.3.6 Target plates will span at least 90% of the diameter of the piping being targeted.

4.3.7 Two acceptable consecutive targets are required.

4.4 Prior to any target being inserted into the steam flow, the following steps must be taken:

4.4.1 Blow down all drip legs and dead legs in the steam flow path.

4.5 For service blows, the individual blow circuit cleaning is complete when the set minimum duration has elapsed and there are no visible contaminants in the exhausting steam plume or waste effluent exiting the silencer.



4.6 After proper notification has been given to the control room and work area, open the warm up line bypassing the steam blow valve. Follow all recommended start-up and warm-up procedures of Lilama, Boiler OEM and any other governing plant procedures.

4.7 Check for steam leaks and expansion problems in the temporary piping and system piping.

During the warm up for steam blow operation, repair leaking flanges on temporary vent pipe as necessary. Monitor spring can support settings on permanent piping.

4.8 Closely monitor all drip legs in the steam blow flow path during warm up procedures to ensure

flow. If any blockage is detected, immediately utilize a compressed air or nitrogen source to back blow the drip leg.

4.8.1 During the warm up process all drip legs should be clear and dry steam exiting.

4.9 Once the system is warm:

4.9.1 For Continuous Blows 1 through 8, slowly open system valve to increase flow as

needed.

4.10 Orifice change is required between blow 4 and blow 5.

4.11 Preliminary valve lineup in aux system:

Note: Valves that are listed are aligned for Blow 1.



Item Position B&W Signoff Lilama Signoff

Blow 1 Boiler Feed Pump Turbine supply from Aux steam supply

Aux Boiler

00QHB01AA816 Closed

00QHB01AA815 Closed

00QHE30AA851 Closed

00QHE30AA852 Closed

00QLA17AA504 Closed

00QLA18AA501 Closed

00QHE30AA853 Closed

00QHE30AA854 Closed

00QLA17AA505 Closed

00QLA18AA502 Closed

00QHE30AA855 Closed

00QHE30AA856 Closed

00QHE30AA857 Closed

00QHE30AA858 Closed

00QHB14AA601 Closed

00QHB13AA501 Closed

00QUB20AA501 Closed

00QHB01AA912 Closed

00QHB01AA913 Closed

00QHB01AA914 Closed

00QHB01AA915 Closed

00QHB01AA916 Closed

00QHB01AA917 Closed

00QHB01AA818 Closed

00QLA19AA501 Closed

00QHB10AA501 Closed

00QHB10AA901 Closed

00QHB10AA902 Closed

00QHB10AA903 Closed

00QHB10AA904 Closed





Aux Header

00LBG10CP003 Closed

00LBG10AA201 Open

20LBG13AA701 Closed

10LBG13AA520 Closed

20LBG13AA504 Closed

20LBG13AA502 Closed

20LBG13AA503 Closed

10LBG13AA521 Closed

00LBG93AA202 Closed

00LBG43AA201 Closed

10LBG13AA520 Closed

10LBG13AA507 Closed

10LBG13AA508 Closed

10LBG13AA506 Closed

10LBG13AA701 Open

10LBG13AA201 Open

10LBG13AA503 Open

10LBG13AA502 Closed

10LBG13AA504 Closed

10LBG14AA601 Closed

10LBG92AA201 Closed

10LBG15AA601 Closed

10LBG10AA901 Closed

10LBG10AA902 Closed

10LBG30AA201 Closed

10LBG80AA201 Closed

10LBG80AA530 Closed

10LBG70AA512 Closed

10LBG70AA518 Closed

10LBG70AA515 Closed

10LBG80AA001 Closed





Aux Header

10LBG80AA202 Closed

10LBG40AA201 Closed

10LBG91AA201 Open

10LBG42AA201 Closed

10LBG70AA501 Closed

10LBG70AA512 Closed

10LBG70AA514 Closed

10LBG70AA513 Closed

10LBG70AA520 Closed

10LBG90AA202 Closed

10LBG90AA201 Closed

10LBG16AA501 Closed

BFPT

10LBG60AA861 Closed

10LBG60AA862 Closed

10LBG60AA801 Closed

10LBG60AA802 Closed

10LBG60AA201 Open

10LBR10AA802 Closed

10LBR12AA201 Open

10LBR14AA801 Closed

10LBR22AA502 Closed

10LBR22AA801 Closed

10LBR22AA802 Closed

10LBR22AA901 Closed

10LBR22AA902 Closed

10LBR22AA801 Closed

10LBR22AA501 Closed

10LBR12AA901 Closed

10LBR12AA902 Closed

10LBR12AA801 Closed





BFPT

10LBR12AA905 Closed

10LBR12AA906 Closed

10LBR12AA907 Closed

10LBR12AA908 Closed

10LBR12AA909 Closed

10LBR12AA910 Closed

10LBR12AA903 Closed

10LBR12AA904 Closed

10XAL42AA801 Closed

10LBR10AA201 Closed

10LBR10AA801 Closed

10LBR11AA201 Open

10LBR13AA801 Closed

10LBR21AA502 Closed

10LBR21AA801 Closed

10LBR21AA802 Closed

10LBR21AA801 Closed

10LBR21AA901 Closed

10LBR21AA902 Closed

10LBR21AA501 Closed

10LBR11AA902 Closed

10LBR11AA901 Closed

10LBR11AA903 Closed

10LBR11AA904 Closed

10LBR11AA801 Closed

10LBR11AA905 Closed

10LBR11AA906 Closed

10LBR11AA907 Closed

10LBR11AA908 Closed

10LBR11AA909 Closed

10LBR11AA910 Closed





Gland Seal Steam

0MAW01AA205 Open

OMAW01AA005 Closed

0MAW01AA010 Open

0MAM03AA705 Closed

0MAM13AA705 Closed

0MAW02AA601 Closed

0MAW02AA901 Closed

0MAW02AA902 Closed

0MAW02AA005 Closed

0MAW02AA205 Closed

0MAM15AA005 Closed

Deaerator

10LBD10AA807 Closed

10LBD10AA201 Closed

10LBD10AA803 Closed

10LBD10AA861 Closed

10LBD10AA862 Closed

10LBD10AA804 Closed

10LBD10AA202 Closed

10LBD10AA805 Closed

10LBD10AA905 Closed

10LBD10AA906 Closed

10LBG51AA201 Closed

10LBD10AA865 Closed

10LBD10AA866 Closed

10LBG50AA203 Closed

10LBG50AA803 Closed

10LBG50AA202 Closed

10LBG50AA201 Closed

10LBG50AA203 Closed

10LBG50AA802 Closed





Deaerator

10LBG50AA863 Closed

10LBG50AA864 Closed

10LBG50AA801 Closed

10LBG50AA861 Closed

10LBG50AA862 Closed

HP No.2 Heater

10LBQ20AA901 Closed

10LBQ20AA902 Closed

10LBQ20AA903 Closed

10LBQ20AA904 Closed

10LBQ20AA801 Closed

10LBQ20AA802 Closed

10LBQ20AA201 Closed

10LBQ20AA202 Closed

10LBQ20AA861 Closed

10LBQ20AA862 Closed

10LBQ20AA803 Closed

Warming Steam

10LBG11AA501 Closed

10LBG12AA501 Closed

10LBG23AA501 Closed

10LBG23AA503 Closed



4.12 Blow 1. This blow will clean the aux steam header from the aux boiler, through the aux header and to the boiler feedwater pumps. Exiting at removed BFW pump turbine valves.

Type of Blow: Continuous Targeted Blow

Reference: Marked up flow path for Blow 1 in Appendix A

Preliminary preparations: Verify communication with control room.

Verify all drip leg drain valves are fully open.

Verify proper target insertion device operation.

Valve lineup

Steam Source: Aux boiler

Mass Flow Rate: 50,000 kgs/hr

Temperature: 300 deg C

CFR 39.46 in line from aux header to BFPT

2.51 upstream of valve 10LBR12-AA201


Blow duration: 12 to 24 hours

The above piping system meets the acceptable cleanliness criteria.

________________________________________________________________ B&W Fluid Dynamics Representative Date

________________________________________________________________ Lilama Representative Date

________________________________________________________________ Viet Nam Oil and Gas Group Representative Date

Upon Completion of Blow 1 Manipulate the following valves.

Open Valves Close Valves

10LBG70AA701 10LBG91AA201

10LBG70AA201 10LBR11AA201

10LBR22AA501 10LBR12AA201

10LBR21AA501

10LBR21AA502

10LBR22AA502



4.13 Blow 2. This blow is designed to clean the alternate pipe path from the extraction steam to the BFW pump turbines. To accomplish this blow, the steam must pass through part of the cold reheat piping. During this blow, the piping to the reheater must be completed and available for blowing. Steam will exit at same point as blow 1.






Valve lineup




CFR 0.58 in line from CRH to Aux header

1.10 in line from CRH to HP Heater No. 2

2.52 in line from HP No.2 Heater to BFPT



Blow duration: 12 to 24 hours





Upon Completion of Blow 1 manipulate the following valves.



10LBR10AA201 10LBG70AA201

10LBD10AA202 10LBR22AA501

10LBR21AA501

10LBR21AA502

10LBR22AA502



4.14 Blow 3. This blow is designed to backblow the line from the BFPT header to the No. 4 extraction header. Steam must pass through the No. 4 extraction header to reach the deaerator. The exit point is a cut and rotated elbow before the deaerator.

Type of Blow: Continuous Service Blow




Valve lineup




Blow duration: 15 minutes








10LBG80AA201



4.15 Blow 4. This blow is designed to clean the steam line from the aux header to the deaerator tank. The exit point is an elbow installed in place of removed check valve 10LBG50AA701.





Valve lineup.












10LBG80AA202



4.16 Blow 5. This bow is designed to clean the steam line from the aux header to the gland seal steam system. The lines to HP A, HP B, IP, LP A, and LP B glands will be blown. Cycle through temporary valves to blow each gland individually.






Valve lineup for other seal steam temp valves closed




CFR 7.34 in line from aux header to gland seals

Blow duration: 12 - 24 hours





Note: Waiting on Toshiba to provide information on connections for LP steam glands inside turbine shell for blows 3D and 3E.





10LBQ20AA201 10LBR22AA501

10LBQ20AA202 10LBR21AA501



4.17 Blow 6. This blow is designed to clean the steam line from CRH piping to HP heater No.2. Steam will flow through the aux header and backflow through the CRH to aux steam line and CRH piping. The exit point is at the left out weld at HP Heater No. 2 (currently blinded for hydrotest purposes). Install fire blanket on top portion of HP Heater No. 2 to protect insulation.





Valve lineup












10LBG70AA201



4.18 Blow 7. This Blow is designed to clean the steam lines from the aux header to the boiler headers. The exit points will be either removed valves or left out welds.





Valve lineup











Appendix A

Drawing attachments

1. Blow 1 Steam Blow Flow Diagrams Rev 0




5. Blow 5

a. Blow 5A Steam Blow Flow Diagrams Rev 0

b. Blow 5B Steam Blow Flow Diagrams Rev 0

c. Blow 5C Steam Blow Flow Diagrams Rev 0

d. Blow 5D Steam Blow Flow Diagrams Rev 0

e. Blow 5E Steam Blow Flow Diagrams Rev 0





Appendix B

Pre-Blow Safety Checklist

Item No. Description YES NO N/A

1. Walkdown of permanent system piping has been performed by execution team;

There is no combustible material in contact with piping.

Spring can stops are removed at all locations.

Piping is not restricted to grow by any items (scaffold, etc.)

Uninsulated sections have been wrapped or barricaded.

Isolation list is complete and all tags are in place.

2. Walkdown of temporary vent piping has been performed by execution team;

There is no combustible material in contact with piping.

Temporary pipe supports are in place and are adequate.

Temporary insulation is installed at inserter and quench points.

Air delivery hose is connected and charged.

Silencer location is adequate and drain hose is installed.

3. Fire extinguishers are available and ready for use.

4. Communication with the control room (steam source) has been established and review of shutdown procedure has taken place.

5. High noise areas are identified and ear protection is readily available.

6. Safety barricade tape has been erected around silencer (s) and signs are in place.

7. All road closure permits related to the steam blow are in place.

8. Projected steam plume direction will not cause any harm or reduce visibility for adjacent work.

9. All scaffolding installed for access to valves, target insertion devices, etc. is complete and green tag(s) are in place.

10. Notification of all site personnel and adjacent units has taken place.

11. Notification of surrounding community has taken place per site policy.

12. JHA is signed by all personnel involved.



Appendix C

Continuous Blows MCR Data*

Aux steam

Outlet

BFP Turbine

aux supplied

Aux Steam to

CRH

Design Flow [kg/hr] 50000 35423** 120000

Pressure [kPag] 1300 1032 1300

Pressure [kPa] 1400 1132 1400

Temperature [deg C] 350 350 335

Specific Volume [cu-m/kg] 0.2003 0.2489 0.1950

* 105% load heat balance was used for MCR data

** Flow rate is for each of the BFP turbines



Appendix D

Construction Activities



Appendix E

B&W Temporary Piping Isometrics and Bill of Materials

2012111272-SB-ISO-001 Rev 0 Blow 1



Appendix F

Reference Materials

Marked up P&IDs showing lines not steam blown, to be cleaned by other means.

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