ML19323F200

LER 80-021/03L-0:on 800421,w/reactor Shut Down,Main Steam Pressure Low Instrument Discovered Inoperable.Caused by Bad Connection Due to Dirty Contact.Contacts Cleaned & Module Returned to Svc

ML19323F200
Person / Time
Site:	Fort Saint Vrain
Issue date:	05/21/1980
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19323F199	List: ML19323F198 ML19323F200
References
LER-80-021-03L, LER-80-21-3L, NUDOCS 8005280637
Download: ML19323F200 (1)

Text

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NRC FOIM 364 U. S. NUCLI AR REGULATORY COMMtSSION (7 77)

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80 7 8 60 81 00CKET NUM8ER EVENT DESCRIPTION AND PROBABLE CCNSEQUENCES h lol2l l On April 21, 1980, with the reactor shutdown, a main steam pressure low instrument was l i o i 3, l found to be inoperable. This is'being reported as a degraded mode of LCO 4.4.1, l RT71 1T able 4.4-1. since there had~been reactor operation during the surveillance interval. l l o l 5 I l There were two operable redundant channels available. There was no affect on plant l FTTl Ioperation. No affect on public health or safety. l

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CAUSE OESCRIPTION AND CORRECTIVE ACTIONS i i 6 0 l l A dirty contact caused a bad connection, which made one channel of the main steam pres +

m l sure low trip inoperable. The plug-in module was removed, the contacts cleaned, and I i 2 Ithe module returned to service. No further corrective action is anticipated or l l1 l3l l required. l l i l41 l l 7 8 9 80 STA  % POWER OTHER STATUS DISCO RY DISCOVERY DESCRIPTION h li l51 W@ I ol ol ol@! License Training l (}_J@l Preventive Maintenance Test l AbVITY CU TENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE Ii is 8I 9W @ l Zl@l N/A l l N/A l 7 10 11 44 46 80 PERSONNEL EXPOSURES NUU8ER TYPE DESCRIPTION LuIJ 10101 o l@l z l@l N/A l l

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