ML19256F342

LER 79-096/03L-0:on 791115,during Reactor Low Pressure Channel Calibr & Function Test,Switches 1 & 2 of 2-B21-PS-N021D Were Out of Tolerance.Caused by Loose Actuating Cam.Cam Set Screw Tightened & Instrument Calibr

ML19256F342
Person / Time
Site:	Brunswick
Issue date:	12/07/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19256F339	List: ML19256F338 ML19256F342
References
LER-79-096-03L, LER-79-96-3L, NUDOCS 7912180537
Download: ML19256F342 (1)

Text

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7 8 60 61 OOCK ET NUuSER 68 EVENT 0 ATE le EVENT DESCRIPTION AND PROSA8LE CONSEQUENCES h ITTTl l While performing PT 3.1.14PC, Reactor Low Pressure Channel Calibration and Function 1 0 3i ! Test, switches 1 and 2 of 2-B21-PS-N021D were out of tolerance. Switch 1, with a l ITTT1 I requirement of 335 15 psig, was found at 315 psig, and switch 2, with a requirement l 0 s I of 435 t 15 psig, was found at 480 psig. l l

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Technical Specifications 3.3.3, 6.9.1.9b l 80 7 8 9

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42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i O l The actuating cam was found to be loose causing the indication and switches to be ]

m 'out of tolerance. The cam set screw was tightened, the instrument was calibrated. I i

7 l and the instrument was returned to service satisfactorily. This is an isolated eventi gi and no further action is required. I l 4 7 8 9 90 STAI S  % POWER OTHE R STATUS Di$ 0 RY DISCOVERY oESCRIPTION t 5 [_gjh l0l9 '

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1. M 'J 10 68 69 80 i NAME OF PREPARER PHONE:

919-457-9521