GO2-83-837, Revised Final Deficiency Rept 271 Re Anchor Darling Valves W/Antirotation Collars (LPCS-V-121).Startup Problem Rept M-2720 Issued to Document deficiency.L-shaped Key Used for Valves Subj to Heavy Vibration
| ML20078B400 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 09/15/1983 |
| From: | Carlisle C WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| To: | Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, 271, GO2-83-837, NUDOCS 8309270036 | |
| Download: ML20078B400 (5) | |
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\ Washington Public Power Supply System
,' P.O. Box 968 3OOO GeorgeWashingtonWay Richland, Washington 99357.. (5,091372 5000 3
,ps Docket No. 50-397 ! .
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September 15, 1983 - G02-83-837 ,
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Mr. J. B. Martin I Regional Administrator ' Region V 1450 Maria Lane, Suite 210 Walnut Creek, California 94596
Subject:
NUCLEAR PROJECT NO. 2 10CFR50.55(e) REPORTABLE CONDITION #271 , ANCHOR OARLING VALVES WITH ANTI ROTATION COLLARS (LPCS-V-12)
Reference:
Telecon QA2-83-178, dated July 21, 1983 L.C. Floyd to B. Dodds, same subject. In accordance with the provisions of 10CFR50.55(e), your office was informed by telephone, of the above subject condition. The attachment provides the Project's revised final report on Condition #271. The corrective action determined to be appropriate for safety related valvos will be completed before fuel load with the balance of the valves complete by ' Commercial Operation. If there are any questions concerning this matter, please contact Roger Johnson, WNP-2 Project QA Manager, (509) 377-2501, exter.sion 2712. C. S. Car is e k Program Director, WNP-2 s !
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Attachment:
As stated ! cc: W.S. Chin, BPA N.D. Lewis, EFSEC A. Toth, NRC Resident inspector Document Control Desk, NRC j 1 l 83C9270036 830915 I I {
'PDR ADOCX 05000397
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l l WASHINGT0ii PUBLIC POWER SUPPLY SYSTL4 NUCLEAR PROJECT NO. 2
. DOCKET NO. 50-397 LICENSE N0. CPPR-93 10CFR50.55(e) CONDITION #271 ANCHOR DARLING A;lTI-R0TATI6N COLLAR REVISED FINAL REPORT i
Description of Deficiency ! During a surveillance run of the low pressure core spray system, it was noted that LPCS-V-12 did not begin to open until approximately 10 seconds after receiving an open, signal l Once tne valve did move, it was noted that the shaf t rotateo ant ' tnere'was ao'upwaro iaoveatent (open) of tiie valve sriofc. An investigation showed that the set screw for the anti rotation collar had backed out and the collar-to-shaft key had vibrated loose allowing the valve shaft to rotate with no open moveraent of the valve. (see drawing I) f Safety Implication LPCS-V-12 is a safety related containment isolation' valve, which is required to De operated during a LOCA condition. The potential for LPCS-V-12 to be non-ocerable during a LOCA is considereo to be a significant deficiency and reportable under the provisions of ICCFR50.55(e). f3.5.E , Inadequate design by the manufacturer, Anchor Darling, in that the valve can becor.ie non-operaDie due tn the anti-rotation collar set screw not being properly set. Corrective Action Startup Problem Report (SPR) H-2720 has been issued to document the Jefici-ency. The SPP. has aeen dispositioned as follows, f
- 1. rur vaived duos ecc to .ieo,y .ibiucion ,i 'L* si. aped Lo, ..ill o; :>s and the set screw will be stakea or o tire applied.
- 2. For valves no _ subject to heat. m ,1, tne set screw will oe staked and LocktitFa;' plied.
The manuf acturer, Ancnor Darling, was contacted and they indicated tMN simi-lar problem hive been experienced at both Shorehan and Zirrer. The prnaanent factory fix by Anchor Darling is co now stake the set screw in place or to use double set screws and apply Locktite SA. ! Safety related valves will oe corrected before fuel load witn ine reuaining valves corrected'by commercial operation. sirailar valves procured f ro.a other - manuf acturdrs will be reviewed for the same proole.a and be repaireo on tir ' sa:ae basis las the Anchor Carling valves. s ,
FR-271 Page 2 of 2 Action to Prevent _ Recurrence A review of all Anchor Darling vavles that use the anti-rotation collar de-sign (4" or larger) has been performed. This review itentified 28 valves (including LPCS-V-12) that need the above described corrective action per-formed to ensure operability. See Table I for a list of valves. Plant Procedure 10.2.7, Valve Trouble Shooting, Handling and Repair, will contain instructions to ensure tnat staking or equivalent is reinstalled during a repair operation. Normal system operability surveillance tests, such as surveillance procedure 7.4.7.3.3, RCIC Operability Test, will maintain assurance of reliable valve operation. 1 l
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TABLE I EPt1 DESCRIPTION A/DV DWG. fl0. FPC-V-130 10"-150# 2643-3 FPC-V-142 8"-150# 2661-3 FPC-V-144 8"-150# 3003-3
*LPCS-V-12 12"-300# 2647-3 MD-V-72 3"-900# 2650-3
*AS-V-20 3"-900# 2650-3
*RCIC-V-22 6"-900# 2653-3
*RCIC-V-45 4"-900# 2651-3 Pi;R-V-l C4 10"-200# ^J4'-3
*RHR-V-21 18"-300# 2648-3
*RHR-V-23 6"-900# 2654-3
*RHR-V-24A 18"-300# 2648-3
*RHR-V-24B 18"-300# 2648-3
*RriR-V-40 18"-300# 2645-3
*RHR-V-48A 4"-300# 2648-3
*RHR-V-488 18"-300# 2648-3
*RHR-V-53A 12"-900# 2658-3
*RHR-V-533 12"-900# 2658-3
*RUCU-V-102 5"-900# 2655-3 RilCU-V-104 6"-900# 2657-3 RWCV-V-31 6"-600# 2649-3 RWCU-V-42 6"-900# 2656-3 RWCV-V-44 6"-600# 2649-3
*SLC-V-1A 4"-150# 2662-3
*SLC-V-18 4"-1504 2662-3 SW-V-5A 8"300* 3503-3 SW-V-82 8"-150* 2642-3
*nPCS-V-10 10"-9008 1927-3
*HPCS-V-11 10"-900# 1927-3
*HPCS-V-23 12"-900# 1928-3
- Denotes safety related valves 9
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