ML19340B278

LER 80-055/03L-0:on 800910,during Surveillance testing,1A Reactor Coolant Pump Bus Train B Undervoltage Relay Was Declared Inoperable Due to Incorrect Trip Value.Caused by as-left Condition Following Previous Surveillance

ML19340B278
Person / Time
Site:	Farley
Issue date:	10/15/1980
From:	Hairston W ALABAMA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19340B271	List: ML19340B270 ML19340B278 ML19340B281
References
LER-80-055-03L, LER-80-55-3L, NUDOCS 8010210726
Download: ML19340B278 (1)

Text

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EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h IO I2l lAt 1005 on 9-10-80. while performing surveillance test FNP-1-STP-612.0 (RCP Bus Reactoti 1013l l Trip Undervoltage Relay Functional Test) the 1A RCP bus train B undervoltage relay was l l01411 declared inoperable. The as found trip value of the relay was 2622 volts vs 2640 voltq l O I s i 1 as required by Tech. Spec. 3.3.1.1. Tech. Spec. 3.3.1.1 action statement requirements l 1016 I l were met. Health / safety of the public were r.ut affected. -l l0 l7 l l l l

l018l l 80 7 8 9 SY S I E'.1 CAUSE CAUSE COYP. VALVE COOE CODE SUSCOOE CO*JPONENT CODE SUSCODE SUSCODE 10l91 7 8 lIl A lh l A lh l Clh l Rl El Ll Al Yl Xlh Wh yh 9 10 11 12 13 18 19 20 SE QU ENTr ai OCCURRENCE RCPORT REVISION L{ D RQ EVENT YEAR R EPORT *.O. CODE TYPE N O.

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liiOi l Based on a review of previous surveillance test data, this incident was attributed to l l lt Iil Ithe as left condition of the relay following the last surveillance test. The relay wag

[i ,7 g 1 adjusted and returned to service at 1025 on 9-10-80 following the successful performange

[it3l lof the surveillance test. A hold point has been placed in the procedure for verifica-l l lil4i l tion by supervision of the proper setpoint in cases where adjustments are necessary. l 7 8 9 80 STA 5  % POWER OTHER STA TUS 015 0 RV OISCOVERY OESCRIPTIOy 32 I i i s ] [Fj@ l1 l 0 l 0 l@l NA l lB l@lPerformanceofsurveillancerest. l ACTIVITY CO TENT REteAsE LOC ATION OF RELE ASE l i l 6 l l Z l @O OF RELEASEWQl NA AVOUNT OF ACTivtTY 14 l

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