ML19294A445

LER#78-054/03L-0 on 781005:During Surveillance Test on Containment High Pressure Bistable,The Setpoint Was 2.3 Lbs Instead of 2.0.Caused by Faulty Elco Connector on Loop Signal Comparator.Comparator Was Replaced

ML19294A445
Person / Time
Site:	Beaver Valley
Issue date:	11/04/1978
From:	Werling J DUQUESNE LIGHT CO.
To:
Shared Package
ML19294A444	List: ML19294A443 ML19294A445
References
LER-78-054-03L, LER-78-54-3L, NUDOCS 7811130220
Download: ML19294A445 (1)

Text

. _ . _ .. . .. . .

U. S. NUCLEAR REGULATORY COMMISSION NRC (dfW 366 wm LICENSEE EVENT REPORT CONTROL 8 LOCK: l I

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(PLEASE PRINT OR TYPE ALL REQUIREO INFORMATION)

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i le IS LICENSE NUMasER CON'T loI>l [y*,"c' l L @l 015 l 0 l 0 l 0 l 3 l 366l 4 69@l IEVENT l 0 iDATE 0 ] S l 7l 8 75@l IlREPORT 74 II OlC ATE 4l 7l 8l@ 80 7 8 60 61 DOCK ET NuveER EVENT DESCRIPTION ANO PROS ABLE CONSEQUENCES h l

lol21 During performance of a surveillance test on containment high pressure bistable, l the setpoint was determined to be 2.3 pounds rather than 2.0 pounds. The o 3 l o l 4 l l containment was at atmospheric pressure when the test was performed. The health I l

l o I s l 1 and safety of the public was not jeopardized since the remaining instrument loops were operable. I lo [s l I

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O 8 l 80 OE OE SusCO E COMPONENT CODE SUB dE SU E 8 I Il Bjh [E]@ LBjh l Il Nl Sl Tl Rl Ulh dh d h 9 10 12 13 18 19 20 7 8 II REVISION SE QUE NTI AL OCCURRENCE REPORT EVENT YS AR REPORT NO. CODE TYPE N O.

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35 31 40 41 42 4J 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i o l The incident resulted from a faulty "ELC0" connector on the loop signal comparator. I I

i i lThe connector was replaced and the loop was successfully tested.

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% POWER OTHER STATUS dis RY DISCOVERY DESCRIPTION

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[l l l-l l l l l 1 I I 15 80*3 i 4 9 to J. A. Werling PHONE:

412-643-1258 I*

NAME OF PREPARER