ML20004B397

LER 81-014/03L-0:on 810414,pressure Instrument 261-39B Indicating Needle Went Beyond Mechanical Stop.Caused by Technician Error.Instrument Repaired.Technician Instructed

ML20004B397
Person / Time
Site:	Pilgrim
Issue date:	05/18/1981
From:	Mcloughlin M BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20004B395	List: ML20004B394 ML20004B397
References
LER-81-014-03L, LER-81-14-3L, NUDOCS 8105280173
Download: ML20004B397 (1)

Text

NRC PORM 366 U. S. NUCLEAR RE2ULATORY COMMISSION (7 77) ' -

. .LIL 'JSEE EVENT REPORT CONTROL BLOCK: l 1

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(PLEASE PRINT OR 1rYPE ALL REQUIRED INFORM,ATIO,N) ,

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.) Ml UCENSEE 8 9 Al Pl JOCE Pl Sl 1lgl50 l 0 l -l 0UCENSE 14 1 j 0l NUM8ER 0l 0l 0l -l 0l 0l@l4 25 26 l1UCENSE l1 l 111 TYPE JC l@l57 CAT l 58 lg _

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EVENT QATE 14 75 REPORT DATE 80 EVENT OESCRIPTION AND PROBASLE CONSEQUENCES h l o 121 l On April 14, 1981 at approximately 2145 hours0.0248 days <br />0.596 hours <br />0.00355 weeks <br />8.161725e-4 months <br /> while perforning surveillance test I i O ; 3, l number 8.M.2-2.2.1 entitled " Recirculation System OP", pressure instrument 261-39B l J o t 4 l I was determined to be inoperable. This instrument is one of four channels which I loisl l contribute to each loop selection logic section of the LPCI mode of the RHR system. I I o !6 I l While pressurizine the instrtiment the indicatine needle went bevond its mechanical j l o 171 I stoo resultine in the innhility o f th e innernmant en rosnnnd. The i n m e rnmon t uns l l o ie i l immediately repaired & returned to service. This was an isolated event. I 7 8 9 80 0E CO E SU C E COMPCNENT CODE SU8 OD'E SU O E loisl 7 8

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_ SEQUENTIAL OCCURRENCE REPORT REVISION LER/RO EVENT YEAR R EPORT NO. CODE TYPE NO.

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44 CAUSE OESCRIPTION AND CORRECTIVE ACTIONS l i I o l l This instrument problem resulted from a technician error in judgement during the  :

,,,1 i i performance of the above surveillance test. To preclude recurrence of this type of I

,, 121 i event the bechnician was immediately instructed as to the proper methods to use in 1 i, ;3j l the performance of this test. l t i i 41 I l 7 8 3 SO STA  % POWER OTHER STATUS 01 RY DISCOVERY DESCRIPTtON li I 58 l9 l El@ l 1l 0l 0l@l N.A. l lBl@l Routine Surveillance Testing l 7 1 12 13 44 45 46 80 mELEASED OF RELEASE AMOUNT OF AC9VtTY LOCATION CP RELEASE N.A.

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• ERSONNEL EXPOSURES NUM8ER l i l 7 l l 0 l 0 l 0 l@lTYPE l @l DESCRIPTION - N.A. l

1. ERSONNE L INJU IES NUM8ER DESCRIPTION li Ia 8l 9101010 l@l12 N.A. I 7 11 60 LOSS OF CR DAMAGE TO 8ACIUTV Q TYPE CESCRIPTION v li 191 Iz l@L N^- I l 7 8 9 to 83

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Mr. M. Thomas McLoughlin PHONE:

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