ML19343A217

LER 80-051/03L-0:on 800813,while Performing Surveillance Test,Reactor Water Level Instrument L1S 263-72B,switches 3 & 4,exceeded Setpoint Limit.Caused by Setpoint Drift. Instrument Recalibr & Returned to Svc

ML19343A217
Person / Time
Site:	Pilgrim
Issue date:	09/11/1980
From:	Mcloughlin M BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19343A213	List: ML19343A211 ML19343A217
References
LER-80-051-03L, LER-80-51-3L, NUDOCS 8009160455
Download: ML19343A217 (1)

Text

"unC Ponu aos su (7 .(v 77) l , LICENSEE EVENT REPORT

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EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h lol2l l On August 13, 1980 at approximately 1500 hours0.0174 days <br />0.417 hours <br />0.00248 weeks <br />5.7075e-4 months <br /> while performine surveillance test I lo tal I 8r.M.2-2.1.1 reactor water level instrument L1S 263-72B, switches 3 and 4, were found l

]O i4 i L to have exceeded their setpoint limit as specified in Table 3.2.B of PNPS Technical I

lo Isl l Specifications. The instrument was recalibrated and returned to service. I l

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43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 11 l o i l Setpoint drif t has been a recurring eroblem. This instrument was previousiv recali- I gi brated on July 26, 1980 as a result of action taken in response to S.I.L. No. 299- I To prevent recurrence and ensure the stability of the setpoint the surveillance l

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,,,,,y interval has temporarily been reduced from three to one month. l l

Li_L4j l 7 8 9 80 SYA 4 POWER OTHER STATUS S RY DISCOVERY DESCRIPTION ITTsl l El@ l 1 l 0 l 0 l@l N.A. l lBlhl Routine Testine l ACTIVITY CO TENT r.ELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE W [Z_j@ lZl@l N.A. l l N.A. l 7 8 9 10 11 44 4 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION 1 7 l0l0l0l@lZl@l' N.A. l PERSONNE L INJU ' ES I

NUMBER DESCRIPTION N.A. l 1 a l 01 Ol 0l@l12 80 l7 8 9 11 LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION 1 9 l Zl@l10 N.A. l 7 8 9 80 DE CRIPTION k

2 o [N ISSUE @l ma @Q N.A. l 68 69 lllIIllllllll 7 8 9 to gD"' _

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NAME OF PREPARER

. . Mas M Oug W n PHONE: 617-746-7900 {