ML20004C347

Revised LER 79-034/03X-1:on 790830,while Operating at 36% Thermal & 105 Mw Electrical Power,Emergency Diesel Generator Day Tank Fuel Oil Level Determined Below Tech Specs.Caused by Level Switch Malfunction.Switch Setpoints Adjusted

ML20004C347
Person / Time
Site:	Fort Saint Vrain
Issue date:	04/09/1981
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20004C345	List: ML20004C344 ML20004C347
References
LER-79-034-03X, LER-79-34-3X, NUDOCS 8106030227
Download: ML20004C347 (1)

Text

U. S. NUCLEAR CEGULAT,";;^.Y COMMISSION NRC FORM 304 LICElW.JE EVENT REPORT CONTROL BLOCK: l l I l l l Ih (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

I o t i l if I oLICENSEE l F I SCODE I v i l 14l@lIS0 t o l I o l o I o l o l 'o I LICENSE NUM9tR InIn 2h

@l28 c l LICENSE i li l eTYPEi nJGl@l$7 JAT I

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7 CON'T 10111- Z,"CE l L j@l 0] 51010 l 012 l 617 68

@l 69 01813101719 EVENT 0 ATE 74

@l014REPORT 75 lo 191811 DATE 80l@

7 8 60 St DOCKET NUMSER EVENT OltSCRIPTION ANO PROBA8LE CONSEQUENCtS h I o l a 1 i On August 30, 1979, while operating at 36% thermal power and 105 MW electrical power, f g g it was determined that the emergency diesel generator day tanks did not have 500 gal- l I

, o ,, j l lons of fuel oil as required per Fort St. Vrain Technical Specification LCO 4.6.1.

The tankst g,3, ; This is reportable per Fort St. Vrain Technical Specification AC 7.5.2(b)2.

each and more than 20,000 gallons were stored on site.

t o is t l htd greater than 350 gallons ,

[

g o ;,; g A Technical Specification change was requested from the Commis.f on for 325 gallons.

, , ,, , , There was no ef fect on aublic health or safety. RO 78-29 similar. l 80

'NI[E TOeY $5eio$$ CoMPCeNENT CODE SUSCCDE lol91 7 4 l E 10 l@ dh d@ l Tl 'fl sl Tl RI fil@ W@ W 9 10 11 12 13 18 19 20 REVISION SEQUENTIAL OCCURRENCE REPORT EVENT YEAR REPORT NO. CODE TYPE No.

go,g 17 l 91

@ ;LER/Ro LI I 01 31 41 1-1 I of 1I Ut] L--J LJJ 32

,,,, 21 22 2J 24 26 27 28 23 30 31 K O P NT EET HOU Rt. S8 i POR S. SUPPLIE MANUP C RER AC IE l@[Z,,j@ [jlLj@ d h I 0l oi 0l 01 [v_J@ Ltl@ LsJ@ l nl , I , I al@

36 3/ 40 41 42 43 44 47 3J 34 JS CAusE DESCRIPTION ANO CORRECTIVE ACTIONS IiIol lThe level switch high which normally controls pump operation and keeps approximately l

,,,,i l500 gallons in the day tanks changed setpoint enough that they were inoperable and thel gl evel switch lows took over control at approximately 350 gallons per tank. The high I

,,,3, glevel switches were adjusted to the proper setpoint, and the surveillace completed. I i

The requested Technical Specification change to 325 gallons was issued. I 80 7 8 9

% POWER QTHER STATUS DISC RY DISCOVERY DESCRIPTtoN ST l

li' is l W@ l 0l 3l 6l@l N/A l l B l@l Normal Scheduled Surveillance ACTIVITv CO TENT PREttASE toCATicNOPRELEASE@

REttASE AMouNToP ACrivity @ l l N/A l l i i s 1 [Z_j W@l N/A 46 30 7 8 9 10 11 44 PERSONNEL EXPOSURES NUMSER TYPE DESCRIPTION N/A l li l 71 10 l o 10 l@l z l@l PERSONNEL INJURIES NuMsER oESCRiPTioN@ I li la 4l 101010 7 9 l@l N/A 11 12 80 l

LOSS OP CR OAMAGE To FACILITV l TYPE DESCRIPTION I

l i 19 I [z,J@l N/A 80 r 7 4 3 10 i DE CRIPTION 12 I o f NISUEU@l N/A l !IllfIl1lll!lI NA m O, PRE,aRER ME-

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