ML19207C214

LER 79-025/03X-0:on 790806,during Steady State Operation at 45% Thermal Power,Emergency Diesel Generator a Found in Degraded Mode, & B Engine Also Declutched.Caused by Relay Failure Due to Normal End of Life.Relay Replaced

ML19207C214
Person / Time
Site:	Fort Saint Vrain
Issue date:	08/31/1979
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19207C215	List: ML19207C214
References
LER-79-025-03X, LER-79-25-3X, NUDOCS 7909100481
Download: ML19207C214 (1)

Text

{{#Wiki_filter:am LICENSEE EVENT REPORT CONTROL S LOCK: l }lll1lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6 S l V l 1 l@l 0 l 0 l- l 0 l0 l0 0 l0 l- l 0l 0l@l 4 1lll2l0l@l ll@lc l0 F o i 7 8 9 LICENSEE COGE 14 1S LICENSE NUMBER 25 26 LICENSE TYPE J0 57 CAT 58 CON'T sy,] l L @l 0 l 5 l 010 l0 l 2 l 6 l7 @l 0 l8 l0 l617 19 j@] 0] 81 3l ll 7l 9l@ o i 7 8 60 61 DOCK ET NUMBER 6d 6W EVENT D ATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEOUENCES h o 2l On Augus t 6,1979 durine stendv state operations at 45% thermal power and 145 MW 1 electrical power,"A" emergency diesel generator was found in a degraded mode per Fort o 3 I t.Vrain Technical Specification LCO 4.6.1. This is reportable per Fort St. Vrain lS o 4 0g.l Technical Specification AC 7.5.2(b)2. When"A" diesel engine declutched"B" diesell0 isl engine also declutched. Redundant equipment was operable and available. There wasllno af fect on public health or safety. l0 7 0 8 7 8 9 SYSTEM CAUSE CAUSE COMP.VALVE CCCE CODE SU8 CODE COMPONENT CODE SU8 CODE SUSCODE IE ID l h lE lh dh I Di El7 i AlV!XI@ l lh dh O 9 7 8 9 10 11 12 13 18 19 2u_SE QU E NTI A L OCCU R R E N CE REPORT REVIS:ON LE EVENT YE AR REPORT NO. CCOE TYPE NO.@ sj;A RO l 71 9l-l I 0121 51 1/l 1o13I lx ll-lW j;q a 21 22 23 24 26 27 28 29 J0 31 32 ACTION FUTURE EFFECT SMUTOOWN ATT AC HM E NT N P R D-4 PRIME COMP. COMPON EN T TAKEN ACTION ON PLANT METHOO HOURS SUSMITTED FORM bu8.SUPPLI E R MANUFACTURER lA l@l ZI@ IZ l@l ZI@l01010101 I Yl@lNI@lNl@llll@34 05 M 3 40 41 42 43 64 47'CAUSE DESCRIPTION AND CORRECTIVE ACTIONS ii o lA relav f ailed due to normal end o f life. The unit had been tested satisfactorily I Ithe orevious month. The relav was replaced and tested and the surveillance succern-1 i i i fully completed. I 1 2 i a lI 1 4l30'8 3 STA S% POWER OTHE R STA TUS SO RY DISCOVERY 0ESCRIPTION l E l@ l 01 4 l Sl@ N/AllB l@l Routine Surveillance Test ls*ACTIVITY CO TENT RELEASED CF RELEASE AMOUNT OF ACTivtTY LOCATION OF RELEASE l Z l @ l Zl@l N/A l N/A't o 7 t1 9 10 11 44 4S 80 PERSONNEL EXPOSURES NU*AB E R TYPE D ESC RIPTION 0 l 0 l 0 l@l Z l@l N/A li 7'a 9 11 12 13 80 PE RSONNE L ;NJUR'ES NLVSER OESCRIPTICN 1010 l 0 I@l N/A l, a 7 8 9 11 12 80 g .,j', o 'O sle LOSS OF QR DAM AGE TO F ACILITY g,*,u.*TvPE C E SC RIPTION %eg Zl@lN/A i 9 7 8 3'O 80l N [hlctsCRIPTICNO 7 009100 t/f/ Py8uciT NaC use ONtY , N/Alll ll l lll l l l l l} 2 o 7 8 3 10 68 69 80 ;[g[[J. W.Gahm (303) 785-2253 o-PHCNE: j NAME OS PREPARER ,-}}