ML19309C304

LER 80-010/03L-0:on 800303,at 10% Thermal Power,A Emergency Diesel Generator Would Not Load as Required for Weekly 50% Load Test Surveillance.Caused by Diesel Generator Governor Problem Which Reduced Speed Control Response

ML19309C304
Person / Time
Site:	Fort Saint Vrain
Issue date:	04/02/1980
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19309C300	List: ML19309C299 ML19309C304
References
LER-80-010-03L, LER-80-10-3L, NUDOCS 8004080427
Download: ML19309C304 (1)

Text

NRC FORM 366 U. S. NUCLEAR REGULATOXY COMMISSION (7 77J '

LICENSEE EVENT REPORT CONTROL eLOCK: l l l l l l l@ (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) fo l l8I 9c I o LICENSEE 7

l F l sCODE i v i 1 14l@l15o l o l I o LICENSE l o l oNuMSER l o l o~ l_ lo l o 25 l@l411 26 11 l 210 l@l57 CAT LICENSE TYPE 40 58 l@

CON'T loI1l 3[RN 60 l L @l610 l 5 l 0DOCKET l 0 lNUMBER 0l2l6l7 @l69 0 l 3 l 0 l 3 l 8 l 740 l@l0 l REPORT 4 l 0 DATE l 2 l 8 l0 i 3 63 EVENT OATE 75 30 l@

EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 10 ! :: l lOn March 3, 1980, with the reactor plant at approximately 10% thermal power, it was l I O l 31 l discovered that "A" emergency diesel generator would not load as required for the l 10#4i l weekly 50% load test surveillance because of erratic governor control. This is beinst j l o ! s I I reported as a degraded mode of LCO 4.6.1(d) ,er Fort S t. Vrain Technical Specification l lc is l IAC 7.5.2(b)2. There was no affect on public health or safety. No accompanying occur-!

l0l7l lrence. Redundant system available and operable. l lO6sii I 7 i 9 80 SYSTEV CAUSE CAUSE COVP. VALVE CODE CODE SUSCCDE COvPONENT CODE SUBCODE SU8 CODE

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,_ SEQUENTI AL OCCURRENCE REPORT REVISICN LE EVENTVEAR REPORT NO. COCE TYPE NO.

@ .ae:A Rog'_18lol l-l I of 11 ol l/l I oi 3I I t. I l-l l 0l 21 22 2J 24 26 27 28 29 30 31 32 TAKEN A O ON PLANT 9T HOURS SB 1 FOR 8. SUPPL MANUPACTURER LA_jhlJ4Bl@

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44 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS li;Oi lThe emergency diesel generator governor developed a problem which reduced its speed l li ;i j [ control response to the point where it could not operate in parallel with the rest of l i, i;; l the system. The generator was replaced with a spare and sent to the manufacturer for I i, ;.ig l repair. The generator was success fully retested. No further corrective action is l i, i4 i l anticipated or required. The unit was a Woodward Type 2301. I 7 8 9 80 l

S  % POWER OTHER STATUS OfS O RY DISCOVERY CESCRIPTION li15l l C l @ l ol llol@lN/A i lBlh!RoutineSurveillanceTest l ACTIVITY CO TENT RELEASE AMOUNT OP ACTIVITY LOCATION OF RELEASE l1 16 l l Z l @t, OF RELEASE lZl@lN/A I l N/A l 7 8 9 to 11 44 45 30 PERSONNEL EXPOSURES NUMsER TYPE CESCRIPTICN 4 l i l 7 ] l 0 l 0 l 0 l@l Z l@l N/A l PERSONN E L INJURIES NuvaER cEsCRiPTtcNh 11 19ll0loIol@l 1 4 9 11 N/A 12 60 I

45$ ' ifs'"' VON' ' " " @

E P 8004080 0 7 - -

l I t 191 7 4 9 I Z l@l10 N/A l 40 OE CRtPTION

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• AVE OF PREPARER - N - -

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