ML19344D996

LER 80-042/03L-0:on 800725,plant Was Operated at Approx 47% Thermal Power & 131 Mwe W/Two Inoperable Reserve Shutdown Units in 30 Hopper Subsystem.Caused by Isolation of Bottle for Repair of Leakage at Brass Fitting for Region 15 Hookup

ML19344D996
Person / Time
Site:	Fort Saint Vrain
Issue date:	08/22/1980
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML16238A340	List: ML16238A339 ML19344D996
References
LER-80-042-03L, LER-80-42-3L, NUDOCS 8008260501
Download: ML19344D996 (1)

Text

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NRC FORM 364 U. S. NUCLEA~l CEEULATCGY COMMIShlON (7 77)

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DOCKET Nyve Em 64 69 EV ENT QATE 74 75 REPORT 0 ATE 80 7 4 60 Si EVENT DESCRIPTION AND PRCB ABLE CONSEQUENCES h l o 12 I l From 1320 to 1410 hours0.0163 days <br />0.392 hours <br />0.00233 weeks <br />5.36505e-4 months <br /> on July 25, 1980, the plant was operated at approxicately 47': 1 A l thernal power and 131 We with two inoperable reserve shutdown units in the thirty I  ;

lo l41 I hopper subsystem. Degraded mode of LCo 4.1.6, reportable per Fort St. Vrain Technica1l loisl l Specification AC 7.5.2(b)2. No affect on public health or safety. No accompanying l l o 161 ] occurrence or probable consequences. I I

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n 2s 2s se n so si s2 <1 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l i t o l l Leakage at brass fitting for region 15 reserve shutdown helius bottle hookup neces- l 1 i i i i i sitated isclation of bottle for repair. With region 27 bottle already isolated, de- 1 i,,2, l graded mode of LCo 4.1.6 resulted. The fitting was replaced and region 15 reserve i l

ii i3i l shutdown unit returned to service.

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