ML18045A743

LER 80-035/03L-0:on 800830,during Return to Svc After Shutdown,Leakage Discovered Through Pressure Relief Valve. Caused by Loose Spring Guide within Solenoid Assembly Valve Due to Failed Brazed Joint.Guide Brazed Back Onto Plate

ML18045A743
Person / Time
Site:	Palisades
Issue date:	09/30/1980
From:	Withrow G CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML18045A742	List: ML18045A741 ML18045A743
References
LER-80-035-03L, LER-80-35-3L, NUDOCS 8010070520
Download: ML18045A743 (1)

Text

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PALISADES PLANT NRC FORM366 U.S. NUCLEAR REGULATORY COMMISSION

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LICENSEE EVENT REPORT CONTROL .. B,L.OCK: I 1

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(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

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• LICENSE NUMBER

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7 8 60 61 DOCKET NUMBER

• 68 69 EVENT DATE 74 75 REPORT CATE 80 EVENT DESCRIPTION ANO PROBABLE CONSEQUENCES@-

! During prei:lar.ations to return the unit to service following a cold shut-down, the PCS was.pressurized to approx. 200 psig to check for lea.ks.

Leakage was found through PRV 1042B. Investig~tion revealed the valve

[QJI] I pilot was being held open by the solenoid plunger which had dropped onto

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1 the pilot valve operating lever and was holding it in the open position.

fI0 f Repairs requir:d removing valve from service; hence condi.tion re-portable

[§))] 1 per TS 3.1.8 and 6.9~2.B2. No threat to public health or safety. I 1 a 9 80 SYSTEM CAl)SE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCOOE rim 7 B 9 le IJI@ W@ lJLl@) ly I A IL Iv IE Ix I@ LX.J@) t!2..J@

10 *_: 11 12 . 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION t:::"\ LERiRO

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24 REPORTNO.

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• lo Io I ol o I IJiJ@) LLJ@ l.1LI@ ID 12 1413 '!(§ JJ 34 35 36 37 40 41 .. 42 43 ""' 47 CAUSE DESCRIPTION AND CORREC"rlVE ACTIONS @

• DJ)) I Within the solenoid assembly, the spring guide had come loose from its ITIIJ g_uide plate due* to a failed* *brazed joint. , As a result, the plunger springi o::rn sli nped to one side and was not exerting u:cwa,..d fprcie -On the sol enojd o:r1J I plunger to keep it off the pilot operating lever. The spring guide was

[III] I brazed back onto- the guide plate. CPCo dwg. 950 Y-35 refers.

8 9 FACIL.1-rY '3()\ METHOD OF (.;:;\

BO STATUS *.. "-POWER QTHER STATUS \:!;:/ DISCOVERY DISCOVERY DESCRIPTION ~

OE Lill@ I 0 I 0 lo l@)ICold Shutdown I LlLJ@I Routine SUI"Veillance 8 9 ACTIVITY 10 CONTENT 12 13

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• RELEASED OF RELEASE AMvUNT OF ACTIVITY-~ l.OCATION OF REL.EASE @ ..

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• 44 I

45 NA 80 PERSONNEL EXPOSURES Q..

. NUMBER ~TYPE DESCRIPTION

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9 11 12 NA 1_3_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _80 ...

PERSONNEL INJURIES ~

NUMBER DESCRll'TION 41 DJil I o I 01 o I@

7 89 11 ~12------------~---------------------~BO LOSS O~ OR DAMAGE TO FACILITY 1.i3" TYl'E DESCRIPTIO... '\:::)

ITli) [Ll@ NA 7 8 9. 10 BO PUBLICITY Q\

NRC USE ONLY ISSUED~ OESCRll'TION ~

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