ML121010560
| ML121010560 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 04/09/2012 |
| From: | Elwood T Ameren Missouri, Union Electric Co |
| To: | Balwant Singal, Thadani M Plant Licensing Branch IV |
| Singal, B K, NRR/DORL, 301-415-301 | |
| Shared Package | |
| ML121010479 | List: |
| References | |
| TAC ME8319 MSM-ZZ-QV004, Rev 002 | |
| Download: ML121010560 (11) | |
Text
Page 1 of 11 REFERENCE USE MSM-ZZ-QV004 RUPTURE DISC REPLACEMENT FOR FWIV AND MSIV MINOR Revision 002
MSM-ZZ-QV004 Rev. 002 RUPTURE DISC REPLACEMENT FOR FWIV AND MSIV TABLE OF CONTENTS Section Page Number Page 2 of 11 REFERENCE USE 1.0 PURPOSE...................................................................................................................................... 3 2.0 SCOPE........................................................................................................................................... 3 3.0 ACCEPTANCE / FUNCTIONAL CRITERIA............................................................................ 3 4.0 RESPONSIBILITIES.................................................................................................................... 3 5.0 PRECAUTIONS AND LIMITATIONS....................................................................................... 3 6.0 PREREQUISITES......................................................................................................................... 4 7.0 PROCEDURE INSTRUCTIONS................................................................................................. 5 8.0 RESTORATION......................................................................................................................... 10
9.0 REFERENCES
............................................................................................................................ 10 9.1.
Implementing..................................................................................................................... 10 9.2.
Developmental................................................................................................................... 10 9.3.
Operating Experience......................................................................................................... 10 10.0 RECORDS................................................................................................................................... 11 11.0 DEFINITIONS............................................................................................................................ 11 12.0
SUMMARY
OF CHANGES....................................................................................................... 11
MSM-ZZ-QV004 Rev. 002 Page 3 of 11 REFERENCE USE RUPTURE DISC REPLACEMENT FOR FWIV AND MSIV 1.0 PURPOSE Provides information to replace the rupture disc on the Main Steam Isolation Valves (MSIV) and Feedwater isolation Valves (FWIV).
2.0 SCOPE This procedure affects the following components:
Component Director ID Location Description ABPSE0001 ABPSE0001 AB-2042-RM1508 RUPTURE DISC FOR ABHV0011 ABPSE0002 ABPSE0002 AB-2042-RM1508 RUPTURE DISC FOR ABHV0014 ABPSE0003 ABPSE0003 AB-2042-RM1509 RUPTURE DISC FOR ABHV0017 ABPSE0004 ABPSE0004 AB-2042-RM1509 RUPTURE DISC FOR ABHV0020 AEPSE0001 AEPSE0001 AB-2026-RM-1411 RUPTURE DISC FOR AEFV0039 AEPSE0002 AEPSE0002 AB-2026-RM-1412 RUPTURE DISC FOR AEFV0040 AEPSE0003 AEPSE0003 AB-2026-RM-1412 RUPTURE DISC FOR AEFV0041 AEPSE0004 AEPSE0004 AB-2026-RM-1411 RUPTURE DISC FOR AEFV0042 3.0 ACCEPTANCE / FUNCTIONAL CRITERIA Acceptance Criteria are contained within procedure steps and attachments.
4.0 RESPONSIBILITIES Maintenance Mechanical Department is responsible for the content and designated performance of this procedure.
5.0 PRECAUTIONS AND LIMITATIONS 5.1.
Establish FME 2 controls in accordance with APA-ZZ-00801. Specific FME requirements may need to be altered during the course of work based on the job and work area conditions.
5.2.
ENSURE WPA placement to provide adequate isolation for the work.
MSM-ZZ-QV004 Rev. 002 Page 4 of 11 REFERENCE USE 5.3.
Rupture disc replacement is NOT an ASME SECTION XI REPLACEMENT. IF any other work than described in the work instructions is required, ASME SECTION XI planning may be required.
5.4.
Work Management Planning may add additional Notes and Precautions within the Job/Task.
5.5.
Steps may proceed in any logical order to facilitate the work.
6.0 PREREQUISITES 6.1.
Test Equipment Standard issue hand tools Torque wrench to 65ft/lbs Rupture disc, MIN 7634709 Garlock 3000 safety related gasket material, 1/64th thick, MIN 6362836 Never-Seez, MIN 6364092 6.2.
Initial Conditions 6.2.1.
System isolated or depressurized and drained prior to start of work.
-END OF SECTION-
MSM-ZZ-QV004 Rev. 002 Page 5 of 11 REFERENCE USE 7.0 PROCEDURE INSTRUCTIONS 7.1.
Gasket Pre-Fabrication
_____/_____
QC INSPECTION POINT OQCM Code M.1.2(B)
Safety Related (Q) (Prior To Replacement/Installation)
_____/_____
QC INSPECTION POINT OQCM Code M.1.4 Fabrications/Machining of a part (Non Welded Items)
(Q, FP, D+, and SBO) (After Fabrication) 7.1.1.
PRE-FABRICATE two replacement gaskets from Safety Related Garlock 3000, 1/64 inch thick, gasket material. Gasket size 2-3/4 OD x 1-5/16 ID.
7.2.
Rupture Disc Replacement 7.2.1.
DISASSEMBLE companion flanges holding the rupture disc/holder assembly.
- a.
INSTALL FME covers, remove and replace FME covers as required to complete the activity.
- b. DISASSEMBLE the holder by loosening the pre-assembly screws or by removing the pre-assembly cap screws on the holder outlet. Refer to Fig C.
FIGURE C
MSM-ZZ-QV004 Rev. 002 Page 6 of 11 REFERENCE USE
_____/_____
QC INSPECTION POINT OQCM Code M.5.1 Equipment General Inspection (Q) (Prior to reassembly)
_____/_____
QC INSPECTION POINT OQCM Code M.5.3(B)
Internal Cleanliness (Q Equipment System Side) (Prior to reassembly) 7.2.2.
CLEAN and INSPECT the seating surfaces and holder assembly. Use of solvents, steel wool, or fine emery cloth is permissible. Do NOT re-machine or use scraper or abrasives.
- a.
REMOVE any adhered gasket material.
- b. INSPECT the rupture disc sealing area for the following:
- Nicks
- Scratches
- Pitting NOTE
- This work document does NOT authorize the repair or replacement of any code parts. IF the repair or replacement of additional code parts is necessary, CONTACT planning to generate a ASME Section XI Repair/Replacement Plan to perform the repair or replacement needed.
- Replacing The Rupture Disc is exempt from the ASME Section XI Repair Replacement Program (Reference APA-ZZ-00662, Appendix A, ASME Section XI Replacement Program Mandatory Requirements.
_____/_____
QC INSPECTION POINT OQCM Code M.1.2(B)
Safety Related (Q) (Prior To Replacement/Installation) 7.2.3.
ASSEMBLE the rupture disc and holder as follows. Refer to Fig C.
MSM-ZZ-QV004 Rev. 002 Page 7 of 11 REFERENCE USE Step 7.2.3 Cont'd CAUTION Do NOT install a shipping protector in a holder assembly.
- a.
Carefully REMOVE and DISCARD any shipping protectors furnished with rupture disc.
- b. PLACE the holder inlet on a flat surface with the alignment pins pointing up.
- c.
MATCH the notches in the rupture disc with the shape of the pins.
- d. PLACE the rupture disc over the pins with the dome side down.
- e.
MATCH the holes in the holder outlet with the shape of the pins in the holder inlet.
- f.
POSITION the holder outlet carefully onto the alignment pins as shown; ENSURE that the rupture disc is NOT damaged.
- g. FASTEN the assembly together by tightening the pre-assembly screws or by replacing and tightening the pre-assembly cap screws.
MSM-ZZ-QV004 Rev. 002 Page 8 of 11 REFERENCE USE Step 7.2.3 Cont'd
- h. Refer to Figure D for installation of the rupture disc assembly.
FIGURE D
MSM-ZZ-QV004 Rev. 002 Page 9 of 11 REFERENCE USE Step 7.2.3 Cont'd
- i.
Before placing the assembly into the system, ENSURE that the companion flange gasket surfaces are clean and free of all rust, corrosion and foreign material.
NOTE A machined flat or J-hook is provided in the holder inlet to ENSURE correct installation of the assembly relative to flow direction.
_____/_____
QC INSPECTION POINT OQCM Code M.5.3(B)
Internal Cleanliness (Q Equipment System Side) (Prior to reassembly)
- j.
INSTALL the rupture disc assembly and gaskets with all flow arrows pointing in the proper flow direction, and the positive orientation device is inserted into the machined flat on the holder inlet or J hook inserted into the drill companion flange.
MSM-ZZ-QV004 Rev. 002 Page 10 of 11 REFERENCE USE Step 7.2.3 Cont'd
- k. Lightly LUBRICATE the flange bolting with Never-seez.
_____/_____
QC INSPECTION POINT OQCM Code M.5.6(B)
Fastener Torque/Tightening (Q Equipment) (Prior to torque/tightening)
- l.
Using a cross torquing pattern, TORQUE each nut with a calibrated torque wrench at 20% increments. Repeat 20% increments and cross torquing pattern until final torque of 65ft/lbs is achieved.
- m. REPEAT Final Torque of all nuts in rotational sequence at 65ft/lbs.
8.0 RESTORATION 8.1.1.
NOTIFY Operations to perform In-Service Leak Check by separate job task. (This is to verify that no vacuum leaks at the rupture disc or the tail pipe exist as the Post Maintenance Test).
8.1.2.
CLEAN the work area.
9.0 REFERENCES
9.1.
Implementing 9.1.1.
M-630-00095, FWIV System Medium Actuator Layout Drawing 9.1.2.
M-628-00094, MSIV System Medium Actuator Layout Drawing 9.1.3.
APA-ZZ-00662, Appendix A, ASME Section XI Replacement Program Mandatory Requirements 9.2.
Developmental 9.2.1.
MP 00-1009A - FWIV Actuator Replacement 9.2.2.
MP 00-1009B - MSIV Actuator Replacement 9.2.3.
CAR 201107918, QC verification of safety related gaskets 9.3.
Operating Experience 9.3.1.
CARS 200002398, Indication That Blown Rupture Disk May Have Been Installed Backwards 9.3.2.
CARS 200404773, AEFV0040 Rupture Disc Blown
MSM-ZZ-QV004 Rev. 002 Page 11 of 11 REFERENCE USE 10.0 RECORDS Retain applicable portions of this procedure with the Job/Task.
11.0 DEFINITIONS None 12.0
SUMMARY
OF CHANGES Page(s)
Section or Step Number Description 5
7.1.1 Added QC point M.1.4.
10 9.2.3 Added new Reference.