ML19290E197

LER 80-011/03L-0:on 800202,during Safety Injection W/Loss of Sys Pressure Test W/Bubble in Pressurizer,Containment Isolation Valve 1-SW-MOV-3134 Failed to Close Fully.Caused by Motor Control Ctr Breaker Thermal Overload Trip

ML19290E197
Person / Time
Site:	Farley
Issue date:	02/29/1980
From:	Hairston W ALABAMA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19290E176	List: ML19290E175 ML19290E177 ML19290E184 ML19290E192 ML19290E197 ML19290E198 ML19290E201 ML19290E202
References
LER-80-011-03L, LER-80-11-3L, NUDOCS 8003050040
Download: ML19290E197 (1)

Text

NRC FORM 366 U. S. NUCLE AR REGULATORY COMMISSION (7 77)

LICENSEE EVENT REPORT CONTROL ULOCK: [

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(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) o  : Al L J l M l F l 1 l(3)l 0 l 0 l - l 0 l 0 l 0 l 0 l 0 l- l 0 l2b0 l@l 4 LICENSE l 1 l 1TYPE l1l1l@l JO l

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$($ L l@l610 l 5 0 0 l 0 l 3 l 4 l 8 @l 012 l 0 l21810 l@l72 Ol 2 l 2] 9l 8 l Oj@ 14 80 CJ DOCKET NUYBER 68 to 6%ENT DATE REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h O 2 l At 1300 on 2/2/80 durinn the performance of FNP-1-STP-40 1 M,f ory Tnjerrinn uith l M J QOSP Test with a Bubble in the Pressurizer). containment isolation valve 1-SU-MOV- l o 4 13134 (SW from RCP motor air coolers) failed to fully close due to its ther-n1 over- I o 5 lload tripping. As a result, the valve was declared inoperable. Tech. Spec. 3.6.3.1. I O 6 Lin part. requires the valve to be operible. Tech- Sonc. 1631 ncrinn centomnne 1 0 7 Lre_auJtenents were net. Health and safety of the oublic were not affected. I O 8 l l 7 . 9 80 SYSTEY CAUSE CAUSE C O'.* P. VALVE CODE CODE SU8 CODE COYPONENT CODE SUBCCOE SUBCODE l

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[ Event is attributable to a MCC breaker thernal overload trip. Thermal overload sizinn l

[: 11 ] l was recalculated usine original desinn criteria and a slichtiv larver thornal overload I i j lwas installed to increase trip margin. The test was successfully reperformed and the 1 2 3 l valve was declared operable at 1405 on 2-9-80. l 12 14 1 I

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ME THOD OF STATUS '4 f'O'VE H OTHER STATUS O!SCOVE HY DISCOVERY DESCRIPTION 32 1 5 W @ l 0] 0l 0l @ l NA l l Bl@l Performance of surveillance test l ACTIVITY CON TENT RELEASLO OF RE L E ASE AYOUNT OF ACTIVITY LOCATION OF RELEASE 6

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NAME OF PREPAHEH W. G. Hairston' III 8

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