ML18352A330

Licensee Event Report ER-76-21 - Containment Purge Supply Valve, a Condition Leading to Operation on a Degraded Mode

ML18352A330
Person / Time
Site:	Palisades
Issue date:	07/22/1976
From:	Bixel D Consumers Power Co
To:	James Keppler NRC/RGN-III
References
LER 1976-021-00
Download: ML18352A330 (2)

Text

consumers

• Power company

'MI' James G. Keppler '"**.\ .

Office of Inspection and Enforcement

~.: . . : , ..

Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-255, LICENSE DPR-20 i PALISADES PLANT - ER-76-21 CONTAINMENT PURGE SUPPLY VALVE Attached is a reportable occurrence which relates to the Palisades Plant. This occurrence has been classified as a condition leading to operation in a degraded mode permitted by a limiting condition of operation.

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David A. Bixel Assistant Nuclear Licensing Administrator

,..* LICENSEE EVENT REPORT 9 CONTROL BLOCK: ...  ! ___....___ _.___.-...JI [PLEASE PRINYAU REQUIRED INFORMATION]

1 6 LICENSEE. LICENSE EVENT

. NAME LICENSE NUMBER TYPE TYPE

~ I Ml rl P I A I L Ii I l o l o l - l o l o l o l ol o l - l o l o l I 4I I I i i i i ii I o I 31 7 B9 14 15 25 26 30 31 32 RiTYPLOP1 REPORT SOURCE OOCKeT NUMBER EVENT OATE REPORT OATE 7

@I!] CON'T I B

I 5~7__._"""'5~B 59 Lr.J 60 I oI s I ol-1 o I 2 I s I BB sI I I I o I 6 I 2 1 1 I 61 lol1l2l2l1l6I 61 69 74 75 BO EVENT DESCRIPTION 10121 I The containment purge supply valve (CV-1808) failed to open during the monthly test.I 7 B 9 BO IPl31 I This valve has been tagged closed to meet the requirements for containment integrity I 7 B 9 BO I

lol41 (l.4(d) all automatic containment isolation valves are operable or are locked I 7 B9 00 lol51 closed). I (ER-76-21) I 7 B9 . BO lol 61 7 B 9 PRIME 80 SYSTEM CAUSE COMPONENT COMPONENT

'CODE COOE COMPONENT COOE SUPPLER MANUFACTURER VIOLATION

@0 Isl DI W lvl Al Livi El xJ L!J I cI 5I .817 I L!J 7 B 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION

~I Unknown at the present time. The failure will b~ investigated during a plant outage I 7 B 9 80

~ I of sufficient length such that repairs can be made without affecting plant I 7 8 9 BO El§ I availability. I 7 8 9 80 FACILITY METHOD OF STATUS  % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION EEJ8 7

L!J 111 ol o I NA I UJ 44 I NA I

9 10 12 13 45 46 80 FORM OF ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE 7

rn 8 9 Lz.J LIJ I 10 11 NA I 44 I

45 NA 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION

~I ol ol g ~ NA 7 8 9 11 12 13 80 .

PERS'ONNEL INJURIES NUMBER DESCRIPTION

[ill I ol ol .d NA 7 8 9 11 12 80

. PROBABLE CONSEQUENCES

~ I None, valve failed in the closed position.

7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION

~1UJ NA

.7 B 9 10 BO PUBLICITY

[ill} NA 7 8 9 BO ADDITIONAL FACTORS

• ~ I A revised report will be issued after this valve has been returned to service. I 7 89 00