05000267/LER-1980-010-03, /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

/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: 05000267/LER-1980-010, Forwards LER 80-010/03L-0 05000267/LER-1980-010-03, /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
References
LER-80-010-03L, LER-80-10-3L, NUDOCS 8004080427
Download: ML19309C304 (1)

LER-1980-010, /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

Event date:
Report date:
2671980010R03 - NRC Website

text

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

LICENSEE EVENT REPORT CONTROL eLOCK: l l

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7 8 9 LICENSEE CODE 14 15 LICENSE NuMSER 25 26 LICENSE TYPE 40 57 CAT 58 CON'T 3[RN l L @l 0 l 5 l 0 l 0 l 0 l 2 l 6 l 7 @l 0 l 3 l 0 l 3 l 8 l 0 l@l0 l 4 l 0 l 2 l 8 l0 l@

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3 60 61 DOCKET NUMBER 63 69 EVENT OATE 74 75 REPORT DATE 30 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.

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40 41 42 43 44 47 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.

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PERSONN E L INJURIES cEsCRiPTtcNh NuvaER 11 19ll0loIol@l N/A I

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