ML19323H733

LER 80-023/03L-0:from 800507-17,plant Was Operated W/Emergency Feedwater Header Supply to Helium Circulator Water Turbine Drives of One Loop Isolated on Four Separate Occasions.Caused by Valve Leakage & Line Leakage

ML19323H733
Person / Time
Site:	Fort Saint Vrain
Issue date:	06/06/1980
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19323H729	List: ML19323H728 ML19323H733
References
LER-80-023-03L, LER-80-23-3L, NUDOCS 8006160118
Download: ML19323H733 (1)

Text

NZG FoR*A 360 U. S. NUCLE AR REGULATORY COMMISSION (7 77)

LICENSEE EVENT REPORT CONTROL BLOCK: I 'l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) l o 11 l l CLICENSEE l 0 l FCODE lSlV l 1 l@l 0 l 0 l LICENSE - l 0 lNUV9ER 0 l 0 l 0 l 0 l- 25l 0 l26 0 l@l LICENSE4 lTYPE l

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68 69 EVENT DATE 74 75 REPORT DATE 80

1. 8 60 61 DOCK ET NUYBE R EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h lo[2l l During the period from May 7, 1980, through May 17, 1980, the plant was operated with l 10131 i emergency feedvater header supp1v to the helium circulator water turbine drives of onel 10141 l loop isolated on four separate occasions. These occurrences constitute operation in I loIs] I a degraded mode of LCO 4.2.2(a) and are reportable per Fort St. Vrain Technical Speci-l No af f ect on pubite health and safety. Similar occurrence l Lo.hJ l t ica tion AC 7.5. 2(b) 2 I

l 0 l 7 l l reported in RO 80-15.

I" 1018 I I 80 7 8 9 COYP. VALVE SYSTEY CAUSE CAUSE COCE CCDE SU8 CODE CCVPCNENT CODE SUSCCCE SUSCODE l0l9] l H j H j@ W@ l B j@ l Vl Al Ll Vl ElX j@ l Fj@ l Hl@13 18 19 20 7 8 9 to 11 12 OCCURAENCE REPORT REVISION SE OLENTI AL EVENT YE AR REPOR T No. CODE TYPE N O.

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@ ,aEgaig 18 l0 l l-l l0 l2 l 3 l ]/l l 0l 31 lLl l-l l 0l 23 24 26 27 28 29 30 31 32

_ 21 22 TAK A T ON O PLANT VE HOURS S 8 17 FbR 8. S P LI E MANU ACTURER lBl@lZl@ lZl@ lZl@ l0 l0 l0 l0 40l lY l@ 41 l42N l@ lN 43 l@ l44M l1 l 2 l047l@

33 34 35 36 3' CAUSE DE50alPTION AND CORRECTIVE ACTIONS 11 101 l Valve leakage and line leakage downstream of Masoneilan pressure control valves neces-]

I_t_i1 1 Isitated isolation for repair. Line leakage rectified by weld repai c and eventual linef Devcon repair to eas- 1 I,i21 l replacement. Trim replaced in one valve to eliminate leakaze.

It I 31 l ket area of second valve eliminated leakage. No further corrective action anticipated I

Iil4 l l or recuired. 80 7 8 9 STA S  % PCwE9 oTHER STATUS OSO RY DISCOVERY CESCRtPTION li j 5 l l El@ l 0 l 4 l 6 l@l N/A l l A l@l Personnel Observation / Review of Logs l A CTi vlTV CO TENT aELEASEO OF aELEASE AMOUNT OF ACTI%iTY LOC ATICN OF RELE ASE l1 l6l9 9l Zl@ l Z l l N/A l l N/A l 44 45 80 F 10 11

'ER$csNEL E=PcStaES CESCRIPTICN a NUMBER TYPE l

li 171 1010101@l Zl@l"N/A "

' * ' ' A P E R ScN ~ E'L ~u'R'i ES NUveER oESCRi,TiO~@

l l i l a 1 1 01 01 01@l N/A 80 7 8 9 11 12 LCSS OF CR CAMAGE TO FACILtTv Q TYPE CESCRIPTION v l

li 19I8 9W@l N/A 7 to 80 "RC use cNtY goo 6160/l? ,

ISSL E D 12101 LNjhl N/A CE CRIPTICN b l ll!llllllllllI

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