ML19340F120

LER 80-093/03L-0:on 801213,Walworth Co Reactor Water Cleanup Outboard Isolation Valve Mo 1201-5 Closed Late.Cause Not Stated.Valve Repacked,Stem Lubricated & Closure Retimed

ML19340F120
Person / Time
Site:	Pilgrim
Issue date:	01/12/1981
From:	Mcloughlin M BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19340F119	List: ML19340F118 ML19340F120
References
LER-80-093-03L, LER-80-93-3L, NUDOCS 8101190465
Download: ML19340F120 (1)

Text

(7 77)

• LICENSEE EVENT REPORT A

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

CONTROL BLOCK: l l l l l l lh l0 l1l lM l A lP lP lS l 14 1 l@l0 15 l0 l- l0 l0 LICENSE l0 NUMBER l0 l0 l-l0l0l@l4 25 26 l1 l1 LICENSE l1l1l@l TYPE Jo l

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7 8 9 LICENSEE CODE CON'T jolil 7 3 S$aC60 lL @l015 l0 61 l- 101219 l 368 @l DOCKET NUMBER 69 1 1211EVENT DATE13 l 810 l@l0REPORT 74 75 I l 11 DATE l 218 80 l1 l@

EVENT DESCRIPTION AND PROS 18LE CONSEQUENCES h l o 12 I l During t.he performance of Surveillance Test Number 8. 7.4. 3, Reactor Water Cleanuo 1

Io Ial I (RWCU) Outboard Isolation valve MD 1201-5 did not close in the required 25 second I lo i4 l l time interval. The RWCU's line Inboard Isolation Valve M0 1201-2 was immediatelv i 10 i s J l closed. A priority maintenance request was issued, the valve repaired and [

l0 je l l the system returned to normal at approximately 1730 hrs. on December 13, 1980 I I

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44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h 11 101 l The RWCU isolaHon vn1m m 1901 9 4 n A N4 m% w ~ -,- n e~a o l ii ;i ; l by Walworth Company. Maintenance repacked the valve, lubricated its stem, I

,, ,,,j satisfactorily retimed its closure and returned it to service. I

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% POWER OTHER STATUS DIS O Y OISCOVERY DESCRIPTION SA S li 151 l E l@ l1 l0 10 l@l NA ] l B l@l Routine Testine l ACTivlTY CO TENT AMOUNT OF ACTIVITY LOCATION OF RELEASE RELEASED OF RELEASE l l NA l l1 l6l 7 8 9 W @ lZl@l to 11 NA 44 45 gr>

PERSONNEL EXPOSURES NUMBER TYPE l

l 1 l 7 l l 010 l 0 l@l Z lhl DESCRIPTION NA PERSONNEL t%U IES NUM8ER DESCRIPTION NA l li la l8 10 7 9 l 0 l 0 l@l1211 80 LOSS OF OR OAMAGE To FACILITY TYPE DESCRIPTION NA l l 1 l 9 l l Z l@l10 80 7 8 9 ISSUE 12 I a l [N_f@ l DESCRIPTIONNA l lllIlll1lllll1 Mr. M. Thomas McLoughlin 617-746-7900 1 ] l'S C F PREPARER PHONE: