ML19269D145

LER 79-004/03L-0 on 790117:during Surveillance Test,Setpoint of PS-3-14-44D Found to Be Greater than Tech Spec Max.Caused by Setpoint Drift on static-o-ring Model 5N-AA3 Pressure Switch.Instrument Recalibrated

ML19269D145
Person / Time
Site:	Peach Bottom
Issue date:	02/15/1979
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-79-004-03L-01, LER-79-4-3L-1, NUDOCS 7902270381
Download: ML19269D145 (1)

Text

.. . . .

k Mr. Boyce H. Grier, Director No.

Office of Inspection & Enforcement, Region 1 3-79-h/03L-o U.S. Nuclear Regulatory Commission .,

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631 Park Avenue King of Prussia, PA 19406 Dear Mr. Griers This L.E.R. refers to setpoint drift of a pressure switch.

The Soverning Technical Specification is Table 3.2.3.

U.S. NUCLEAR REGULATORY COMMIS$10N LICENSEE EVENT REPORT coNTRolslocx l

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o 2 i While at power, duW perfemme of a surveillancs test the setpoint l TTTTI I of PS-3-1h-LLD was found to be 0.2 PSIG greater inan the Tech Spec limit i

ITITI I cf 18's PSIG. The switch is an interlock to indicate core spray p'=p {

E r-4"a for ADS actuation. Safety significance was miMmm1 since o s i re%h t inst ==entation was orerable. l Ml l

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@l switch. The instrument was i::=ediately recalibrated, tested i g satisfactorily, and returned to service.

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