ML20062E438

/03L-0 on 781101:rod Block Monitor(Rbm) Channel a Was Found Out of Calibr During Testing Due to Setpoint Drift.Calibr Frequency Will Be Increased from Once to Twice Per Year

ML20062E438
Person / Time
Site:	Brunswick
Issue date:	11/30/1978
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20062E435	List: ML20062E432 ML20062E438
References
LER-78-072-03L-02, LER-78-72-3L-2, NUDOCS 7812070181
Download: ML20062E438 (1)

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LICENSEE EVENT REPORT

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7 8 53 74 75 DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o 2 l Durinp: the rod block monitor (RBM) periodic test (PT 1.5.1). RBM channel A was  !

I O I 3 I l found out of calibration. I l0l4l l (Technical Specification 3.1.4.3) l 101s 1 l l O 6 l l 10171 1 I

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47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS gl The RBM was out of calibration due to setpoint drift. The monitor was l i i l recalibrated and returned to service. Frequency of calibration for the monitor I gl will be increased from once per year, to twice per year. This action should l hl prevent similar events from occurring. I ml 7 8 9 80 l

ST S  % POWE R OTHER STATUS 015 O RY DISCOVERY DESCRIPT80N y W@ l0 l 9 l 9 l@l NA l l B l@l Periodic Test l A. flVITY CO TENT Rete ASEo OP RELE ASE AMOUNT OF ACTIVITY LOCATION OF RELEASE NA lil6l 8W 7 9

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