ML19344F464

LER 80-064/03L-0:on 800810,during Mode 1 Operation,Plant Protective Sys Channels a & D Malfunctioned.Caused by Power Supply Failure.Channels Repaired & Declared Operable Per Tech Specs

ML19344F464
Person / Time
Site:	Arkansas Nuclear
Issue date:	09/08/1980
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19344F460	List: ML19344F459 ML19344F464
References
LER-80-064-03L, LER-80-64-3L, NUDOCS 8009150296
Download: ML19344F464 (1)

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NRC FORM 366 U. S. NUCLE AR REGULATORY COMMISSION 17 771 LICENSEE EVENT REPORT EXHIBIT A CONTROL 8LOCec: l l l l l l lh (PLEASE PRINT OR TYPE ALL REQUIREO INFORMATIONI

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HF, ORT DArE 2 . 60 61 - DOCEET hum 8ER 68 EVENT DATE 75 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Oio 1o: 211 During Mode 1 operation, a high containment pressure trip was received oni e i PPS Channel "A". The remainina channels remained operable with the i io u iireactor trip logic in a 2 out of 3 trip logic. Later the same day, a l ITTTI I similar trip signal was received on PPS Channel "D" from the Steam i ic a i i Generator "B" low pressure circuit. The remaining channels remained i f o l > l Looerable. Similar to LER's 50-368/79-055,80-028 & 80-033. Reportable t I c 91 ! per T.S. 6.919.b. I

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, A CAUSE DESCR.PTION AND CORRECrivE ACTIONS t i lo i l lnvestication revealed the PPS "A" failure was cue to a power supply ~t m ifailure on bistable comparator card #13. The PPS "D" failure was due i i,i,i i to a power supply failure on bistable comparator card #12. Channels i i,13 twere repaired and declared operable meeting requirements of T.S. Table  ;

i,nii 3.3-1 Action Statement 2a. Failure inve.stigation has '.2een referred to  ;

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ME Or PREPAR,, Chris N. Shively , 5di/968-2519

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