05000267/LER-1979-058-03, /03L-0:on 791107,during Reactor Shutdown,Line Supplying Backup Bearing Water to 1A Helium Circulator Determined to Be Impaired Due to Impaired Hanger.Caused by Missing Anchor Bolt & Stripped Anchor Bolt Shield

/03L-0:on 791107,during Reactor Shutdown,Line Supplying Backup Bearing Water to 1A Helium Circulator Determined to Be Impaired Due to Impaired Hanger.Caused by Missing Anchor Bolt & Stripped Anchor Bolt Shield

ML19253C908
Person / Time
Site:	Fort Saint Vrain
Issue date:	12/06/1979
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19253C900	List: 05000267/LER-1979-058, Forwards LER 79-058/03L-0 05000267/LER-1979-058-03, /03L-0:on 791107,during Reactor Shutdown,Line Supplying Backup Bearing Water to 1A Helium Circulator Determined to Be Impaired Due to Impaired Hanger.Caused by Missing Anchor Bolt & Stripped Anchor Bolt Shield
References
LER-79-058-03L, LER-79-58-3L, NUDOCS 7912120336
Download: ML19253C908 (1)

LER-1979-058, /03L-0:on 791107,during Reactor Shutdown,Line Supplying Backup Bearing Water to 1A Helium Circulator Determined to Be Impaired Due to Impaired Hanger.Caused by Missing Anchor Bolt & Stripped Anchor Bolt Shield

Event date:
Report date:
2671979058R03 - NRC Website

text

U.S. NUCLEAR REGULATORY COMMISSION NRC FOyM,366 (7 77)

LICENSEE EVENT REPORT CONTROL BLOCK: l l

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8 60 61 COCKET Nuv8ER 68 69 EVENT DATE 74 75 REPORT DATE 83 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o

2 lAt 1326 hours0.0153 days <br />0.368 hours <br />0.00219 weeks <br />5.04543e-4 months <br /> on November 7,1979, with the reactor in a shutdown condition, the line I tsupplying backup bearing water to lA helium circulator was determined to be i= paired I

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ldue to an impaired hanger 10A-H-21208. This is a degraded mode of LCO 4.3.10 and is I

o i4 l reportable per Fort S t. Vrain Technical Specification AC 7.5.2(b) 2.

No affect on l

ois o #6 health and safety of the public.

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CAUSE

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43 44 47 CAUSE CESCRIPTION AND CCRRECTIVE ACTIONS h pause of hanger 10A-H-21208 and system impairment was a missing anchor bolt and i

o peripped anchor bolt shield. Missing bolt and defective shield were replaced and l

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l hanger verified operable.

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