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

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(PLEASE PRINT CR TYPE ALL REQUIRE 3 INFCCMATitN) foTil8 l9 M l LICENSEE 7 A l P CODE l P l S l 1 l@l 0 l0 l-UCENSE 14 15 l 0 l0 l0 l0 l0 l- l025l0 l@l4 NUMBEH 26 l1l1l1l1l@l LICENSE TYPE Jo l S7 GAT 68 l@ CON'T lolil 7 8 [[ l L 60@l 0 l 5 l0 l-61 l0 l 2 l 9 l3 @l01811 DOCKET NUMSER 68 69 1318 lo l@l0 l9REPORT EVENT DATE 74 75 l1 l1DATEl8 l0 80l@ EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h lol2l l On August 13, 1980 at approximately 1500 hours 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 l 0 l6 l l lo 171 l l I 106811 E CODE SUSC E COMPONENT CODE SUSCOD'E SU E lo19l lI lB l@ l Xl@ l Z l@ l I l N l S l T l R l U l@ l Sl @ [Zj 20 7 8 9 to 11 12 13 18 19 SEQUENTI AL OCCURRENCE REPORT REVISION EVENT YEAR R EPORT NO. CODE TYPE N O. L

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_ 21 22 23 24 26 27 2W 29 30 31 J2 v N AC C PLANT MET HOURS S8 i FOR 8. SUP LIE MAPUFAC RER LE_j@l Z l@ 33 34 [Z_j@ 3h [Z_j@ 36 3 l0l0l010l 40 l41N l@ (J_j@ 42 lNlh lYl0l1l0l@ 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

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