05000324/LER-1982-134-03, /03L-0:on 821222,trip Module Showed Upscale Indication of Reactor Level While Local Meter Indicator of Redundant Instrument Showed Indication of 198.0 Inches. Caused by Transmitter Out of Calibr Due to Instrument Drift

/03L-0:on 821222,trip Module Showed Upscale Indication of Reactor Level While Local Meter Indicator of Redundant Instrument Showed Indication of 198.0 Inches. Caused by Transmitter Out of Calibr Due to Instrument Drift

ML20028F468
Person / Time
Site:	Brunswick
Issue date:	01/21/1983
From:	Pastva M CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20028F461	List: 05000324/LER-1982-134, Forwards LER 82-134/03L-0 05000324/LER-1982-134-03, /03L-0:on 821222,trip Module Showed Upscale Indication of Reactor Level While Local Meter Indicator of Redundant Instrument Showed Indication of 198.0 Inches. Caused by Transmitter Out of Calibr Due to Instrument Drift
References
LER-82-134-03L-01, LER-82-134-3L-1, NUDOCS 8302010375
Download: ML20028F468 (1)

LER-1982-134, /03L-0:on 821222,trip Module Showed Upscale Indication of Reactor Level While Local Meter Indicator of Redundant Instrument Showed Indication of 198.0 Inches. Caused by Transmitter Out of Calibr Due to Instrument Drift

Event date:
Report date:
3241982134R03 - NRC Website

text

NRC FORM 366 U. S. NUCLEA?! REGULATIRY COMMISSION (7 77)

• LICENSEE EVENT REPORT CONTROL BLOCK: l l

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8 60 61 DOCKET NUMBER 68 69 EVENT OATE 74 75 REPORT DATE c10 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h IOl2l l Routine surveillance during unit shutdown operation revealed the local meter l

lo la1 l indicator of PCIS reactor level trip module, 2-B21-LTM-N024A-1, showed an upscale l

o,,; ; indication of reactor level while the local meter indicato of redundant instrument l

2-B21-LTM-N024B-1 showed an expected indication of 198'.0".

These instruments l

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l 0 l6 l l actuate on reactor low level No. 2 and provide input for FCIS group Nos. 1 and 3.

l l 0 l 7 ) l This event did not affect the health and safety of the public.

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Technical Specifications 3.3.2, 6.9.1.9b i

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CODE TYPE NO.

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40 41 42 43 44 47 CAUSE CESCRIPTION AND CORRECTIVE ACTIONS h l i l 0 l l An investigation showed LTM-N024A-1 and its respective transmitter, 2-B21-LT-N024A-1.J i i g, y j were both functioning out of calibration tolerances due to instrument drif t.

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,,,,,l instruments, Model No, 1152, were calibrated and returned to service. This is che

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l l 1 l41 l Therefore, no further action regarding this event is required.

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_PustisTY 8302010375 830121 8

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P AME OF PREPARER PHONE: