ML19257D118

LER 80-001/03L-0:on 800101,during Surveillance Testing, Average Power Range Monitor E Downscale Trip Found at 2.0/125 Compared to Tech Spec Limit of Equal to or Greater than 2.5/125.Caused by Instrument Drift.Instrument Calibr

ML19257D118
Person / Time
Site:	FitzPatrick
Issue date:	01/29/1980
From:	W. Verne Childs POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19257D116	List: ML19257D115 ML19257D118
References
LER-80-001-03L, LER-80-1-3L, NUDOCS 8002010338
Download: ML19257D118 (1)

Text

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SM l 00L l@l015 l0DOCKET 61 l0 l01313NUVBER l 3l@l 68 6') EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o 2 l During surveillance testing APRM E downscale trip was found at 2/125 o 3 l of scale vice a technical speci fication limit of equal to or greater l o a j than 2.5/125 of scale. The remaining 5 APRM channels were satisfactory l o s l and no operation in a degraded mode existed thus no signi ficant i o 6 I hazard existed. I i a 7 See attachment for details. l l

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, . POWER AUTHORITY OF THE STATE OF NEW YORK JAMES A. FITZPATRICK NUCLEAR POWER PLANT DOCKET NO. 50-333 ATTACHMENT TO LER 80-001/03L-0 Page 1 of 1 During normal operations, while conducting Operating Surveillance Tes t F-ST-5B ti tled "APRM Ins trument Functional Test", to meet the requirements of Technical Speci fications Appendix A, Table 4.1-1, APRM "E" downscale trip was found set at 2.0/125 compared to a Technical Speci fication limit of equal to or greater than 2.5/125. Technical

. Speci fication Table 3.1-1 requi res that two of the three APRM's in each trip system be operable. Since the remaining five APRM channels were functioning normally this requirement was met. The re fo re , the event did not represent any significant hazard to the public health and safety.

Following recalibration to correct the instrument dri f t, the instrument was demonstrated operable by the successful completion o f F- S T- 5 B .

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