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| {{Adams
| | #REDIRECT [[05000267/LER-1981-029, Forwards LER 81-029/03L-0.Detailed Event Analysis Encl]] |
| | number = ML20004D669
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| | issue date = 05/20/1981
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| | title = Forwards LER 81-029/03L-0.Detailed Event Analysis Encl
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| | author name = Gahm J, Reed A, Warembourg C, Warembourg D
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| | author affiliation = PUBLIC SERVICE CO. OF COLORADO
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| | addressee name = Seyfrit K
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| | addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
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| | docket = 05000267
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| | license number =
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| | contact person =
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| | document report number = P-81148, NUDOCS 8106090635
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| | package number = ML20004D670
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| | document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
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| | page count = 4
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| }}
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| | |
| =Text=
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| {{#Wiki_filter:, g,* _-
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| ["TS; .n pubuc service company oe conende
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| #-1 16805 ROAD 19%
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| 1 5 PLATTEVILLE, COLORADO 80651 May 20, 1981 Fort St. Vrain Q h q s
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| ,,\
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| Unit No. 1 k'>gI"I!I*1 pr"I-
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| - ,L'9 P-81148 g "', .
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| ; JUN 0 81981 * ~i U S* Ryms .I
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| ~Q g Mr. Karl V. Seyfrit, Director . M.I;Q' Nuclear Regulatory Commission -~
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| Region IV Office of Inspection and Enforcenent 611 Ryan Plaza Drive Suite 1000 Arlington, Texas 76012
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| ==Reference:==
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| Facility Operating License No. DPR-34 .
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| Docket No. 50-267
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| ==Dear Mr. Seyfrit:==
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| Enclosed please find a copy of Reportable Occurrence Report No. 50-267/
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| 81-029, Final, submitted per the requirements of Technical Specification AC 7.5.2(b)2.
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| Also, please find enclosed one copy of the Licensee Event Report for Reportable Occurrence Report No. 50-267/81-029.
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| Very truly yours,
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| - ?Y Don Warembourg Manager, Nuclear Production DW/cis Enclosure cc: Director, MIPC 00 )
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| y
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| / /
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| 8106090 e5 6
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| 9 O .*- - .
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| w REPORT DATE: May 20. 1981 REPORTABLE OCCURRENCE 81-029 ,
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| ISSUE O OCCURRENCE DATE: Aoril 20. 1981 Page 1 of 3 FORT ST. VRAIN NUCLEAR GENERATING STATION PUBLIC SERVICE COMPANY OF COLORADO 16805 WELD COUNTY ROAD 19 1/2 PLATTEVILLE, COLORADO 80651 i REPORT NO. 50-267/81-029/03-L 0 Final IDENTIFICATION OF '
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| OCCURRENCE: ,
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| The 1D emergency diesel of 1B emergency generator set failed the weekly 50% load test. This is raportable per For: S t. Vrain Technical Specification AC 7.5.2(b)2 as a degraded mode of LCO 4.6.ld. [
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| EVENT DESCRIPTION:
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| p April 20, 1981 while op-rating at 50% thermal power and 170 W electrical ,
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| power, the weekly emergency diesel generator 50% load test was conducted. ,
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| The surveillance for lA emergency generator set was completed satisfactorily. !
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| The operator secured 1A emergency generator set and started testing on 1B ;
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| emergency generator set. !
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| Approximately 10 minutes before the two hour test period was completed, the '
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| operator checked the 1B emergency generator set and found it operr. Ling properly. About five minutes later, the operator received a call from a ,
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| security ' guard, who had observed an oil mist in the IB emergency diesel ;
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| generator room. ;
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| , The operator returned to the 13 emergency generator room and secured thc.
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| diesel generator set. Upon examining the diesel engines, he discovered a '
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| fuel leak on //l injector of 1D diesel engine. ;
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| Maintenance personnel were called to repair the leaking fuel line and '
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| found the injector had failed and was jammed in the precombustion chamber.
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| The entire injector precombustion chamber was removed and replaced. The a emergency diesel generator set was retested and found satisfactory on !
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| April 23 1981, and'then returned to service.
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| I CAUSE l
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| DESCRIPTod: ,
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| The cause of this occurrence was a failed fuel injector. )
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| l 1
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| . j t
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| 1
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| r:
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| . , , i? s'a_ ~
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| A REPORTABLE OCCURRENCE 81-029 ISSUE O Page 2 of 3 CORRECTIVE ACTICN:
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| The fuel injector and precombustion chamber were replaced. The emergency generator set was retested and returned to service.
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| No further corrective action is anticipated or required.
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| l I
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| 1
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| .,.....?_ .
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| REPORTABLE OCCURRENCE 81-029 ISSUE 0 Page 3 of 3 I Prepared By:
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| f
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| ( 2/A. ,
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| i Asa B. Reed Technical Services Technician i
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| t i
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| Reviewed By:
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| l
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| /e.T W/Gahm chnical Services Supervisor i
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| Reviewed By:
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| Frank M. Mathie Operations Manager Approved By: Ne n . . M Don Warembourg Manager, Nuclear Produ/
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| ction l
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| l l
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| , . , _ , , _ , _ . . . _ , . . . . , _ . _ . . - _}}
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