05000267/LER-1980-023-03, /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

/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: 05000267/LER-1980-023, Forwards LER 80-023/03L-0 05000267/LER-1980-023-03, /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
References
LER-80-023-03L, LER-80-23-3L, NUDOCS 8006160118
Download: ML19323H733 (1)

LER-1980-023, /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

Event date:
Report date:
2671980023R03 - NRC Website

text

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

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8 60 61 DOCK ET NUYBE R 68 69 EVENT DATE 74 75 REPORT DATE 80 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 Lo.hJ l t ica tion AC 7.5. 2(b) 2 No af f ect on pubite health and safety.

Similar occurrence l

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

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8 9 SYSTEY

CAUSE

CAUSE COYP.

VALVE COCE CCDE SU8 CODE CCVPCNENT CODE SUSCCCE SUSCODE l0l9]

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CODE TYPE N O.

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_ 21 22 23 24 26 27 28 29 30 31 32 TAK A T ON O PLANT VE HOURS S 8 17 FbR 8.

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40 41 42 43 44 47 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 I,i21 l replacement. Trim replaced in one valve to eliminate leakaze.

Devcon repair to eas-1 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

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'ER$csNEL E=PcStaES NUMBER TYPE CESCRIPTICN a

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NUveER l i l a 1 1 01 01 01@l N/A l

80 7

8 9 11 12 LCSS OF CR CAMAGE TO FACILtTv Q TYPE CESCRIPTION v

li 19I W@l N/A l

80 7

8 9 to "RC use cNtY goo 6160/l?

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