ML20084U330

LER ER-77-001:on 770103,control Rod Drive Mechanism 4 Declared Inoperable Due to Seal Leakage Problems.Caused by Beginning Seal Failure.Drive Seal to Be Replaced

ML20084U330
Person / Time
Site:	Palisades
Issue date:	01/17/1977
From:	Hoffman D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
LER-ER-77-001, LER-ER-77-1, NUDOCS 8306280630
Download: ML20084U330 (4)

Text

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1 euCENSEE EVENT REPORT 1

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Palisades CONTROL CLCCX;l l l l l l l [pLEAss PRINT ALL REGUIRED INFORMAT1SN) 1 6 ME UCENSE NUMBER P 01 lMlIl Pl A l Ll1l l 0l 0l-l 0l 0l0 l 0 l 0 l-l 0 l 0 l l h l1 l1l1l l l0l3l 7 89 14 15 25 26 30 31 32 "EP 5 E CCCKET NUMBER EVENT CATE REPORT CATE O 1 CONT l l l lLl l 0 l 5 l 0 l-l 0 l 2 l 5 l 5l l0l1l0l3l7l7l l 0 l 1l1 l7 l7 l 7 l )

7 8 57 "8 59 60 61 68 69 74 75 80 EVENT DESCRIPTION HE I Due to seal leakare troblems, CRDM No h is being considered inoperable. This l 7 89 80

$ l action is taken to efehibit additional drive movement which might lead to increased l 7 89 80 3[ l seal leakare. The drive seal vill be replaced at the next cpportunity consistent l 7 89 30 01" l with plant operating reauire=ents. (ER-77-01) l 7 89 80 0e l l 7 89 peut 60 Sc7E CCCE CCupCNENT CCCE N MACnMR vetAroN O

7 89 10 lRl3l W 11 lC l 0 l Nl Rl 0 l D]

12 17 lN l 43 44 lC lh 19 l0 l 47 W

48 CAUGE DESCRIPTION Oe l The cause of this event is beginning seal failure en CRDM Ho h. The seal is made l 7 89 80 RE l by Garlock and is a Mechanipak ?/pe TkBH seal (1-1/h" shaft), seal Code Th000-900h, l 89 80 3 I Ref Dw B29751. l

's74$ s pCwER CTNER status CECvEN C:sCCvERY CEsCmPTCN 1

7 8 W

9 l0l9l9l l 10 12 13 NA 44 l W 45 l

46 NA 80 l

ACTMTV CCNTENT AftEASEC AMCUNT CF ACTMTV LCCATCN CF AELEASE 1 12 7 8 W

9 CP WAELEASE l 10 11 NA l 44 l

45 NA 80 l

PERSONNEL EXPOSURES NUMBER TYPE CESCRIPTICN t ia l010l0l Wl NA l 7 89 11 12 13 80 PERSONNEL INJURIES NUMBER CESCAPTCN

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$ l 01 Ol 0 l 7 89 l NA l 11 12 80 PROBABLE CONSEQUENCES .

IA l none. The drive remains capable of performing its safety function. l 7 89 80 LOSS CA DAMAGE TO FAC:UTY TY pE CESCRIPTCN l NA l 7 89 10 80 PUBUCITY l NA l 7 89 50 AC0!TIONAL FACTCAS 1G l NA l 7 89 80 5I

• I 8306280630 770117 PDR ADOCK 05000255 s PM l

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• u-General Offices: 212 West usen gen Avenue. Jackson Michigan 492C1 e Area Code S17 7884550 Janusry 17, 1977

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Mr Janes G Keppler )f,-

Cffice of Inspection 3: Enforcement /

Eegion III * '_.

US liuclear Regulatcry Cc=issicn 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-255 - LICE:ISE DPR PALISADES PLA:C - C0ZECL RCD DRIVES - ER-77-01 Attached is a Licensee Event P.eport which relates to our Palisades Plant.

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David A Bixel Assistant :Iuclear Licensing Acministrator l

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