05000324/LER-1978-058, Suppl to LER 78-058/03L-1:on 780630,while Performing Penetrant Test 2.1.26PC,I&C Technician Found Pressure Switch B21-PS-N015B Out of Calibr.Caused by Instrument Drift.Switch Recalibr.During Future Outage,Switch Will Be Replace

Suppl to LER 78-058/03L-1:on 780630,while Performing Penetrant Test 2.1.26PC,I&C Technician Found Pressure Switch B21-PS-N015B Out of Calibr.Caused by Instrument Drift.Switch Recalibr.During Future Outage,Switch Will Be Replaced

ML19323F265
Person / Time
Site:	Brunswick
Issue date:	05/12/1980
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19323F257	List: 05000324/LER-1978-058, Suppl to LER 78-058/03L-1:on 780630,while Performing Penetrant Test 2.1.26PC,I&C Technician Found Pressure Switch B21-PS-N015B Out of Calibr.Caused by Instrument Drift.Switch Recalibr.During Future Outage,Switch Will Be Replace
References
LER-78-058-03L, LER-78-58-3L, NUDOCS 8005280711
Download: ML19323F265 (2)

LER-1978-058, Suppl to LER 78-058/03L-1:on 780630,while Performing Penetrant Test 2.1.26PC,I&C Technician Found Pressure Switch B21-PS-N015B Out of Calibr.Caused by Instrument Drift.Switch Recalibr.During Future Outage,Switch Will Be Replaced

Event date:
Report date:
3241978058R00 - NRC Website

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LICENSEE EVENT REPORT UPDATE REPORT: PREVIOUS O.

REeoar DATE 8-1-78

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. 61 OOCKET NUVSER 68 63 EVENT OATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 1012 I l An I&C technician found pressure switch B21-PS-N015B (Main Steam Line Low Pressure) l 1013 l l out of calibration while performing PT 2.1.26PC (Main Steam Line Low Pressure l

[o l4 l l Channel Calibration & Functional rest).

The pressure switch was found r.ctuatine l

10 l s i I at 812 psig decreasing pressure rather than the required greater than or equal to l

10 is i 1 825 psig decreasing pressure.

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During a future Unit No. 2 outage, B21-PS-N015B will be replaced with an analog I

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instrument. This instrument has no previous history of setpoint drift.

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LER ATTACHMENT - RO NO. 2-78-58 Facility: BSEP Unit No. 2 Event Date: June 30, 1978 During the 1980 Unit No. 2 refueling outage, several instruments were scheduled to be replaced with more reliable analog-type instrumentation.

Prior to the refueling outage, Carolina Power & Light Company contacted other utilities which had already made this conversion to learn of any problems they experienced.

From these conversations, it was decided that a thorough bench-testing program should be implemented before actual installation. During this bench testing, several problems were identified which we feel make these instruments unsuit-able for operation at this time. Upon completion of correcting these problems and thorough testing, this new analog instrumentation will be installed.

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