05000259/LER-1980-003-03, /03L-0:on 800112,while Performing Local Leak Rate Testing During Refueling Shutdown,Path Leakage Through MSIVs for 3 of 4 Main Steam Lines Exceeded Leak Rate Per Tech Specs.Caused by Normal Wear & Erosion

/03L-0:on 800112,while Performing Local Leak Rate Testing During Refueling Shutdown,Path Leakage Through MSIVs for 3 of 4 Main Steam Lines Exceeded Leak Rate Per Tech Specs.Caused by Normal Wear & Erosion

ML19262C234
Person / Time
Site:	Browns Ferry
Issue date:	02/04/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19262C232	List: 05000259/LER-1980-003, Forwards LER 80-003/03L-0 05000259/LER-1980-003-03, /03L-0:on 800112,while Performing Local Leak Rate Testing During Refueling Shutdown,Path Leakage Through MSIVs for 3 of 4 Main Steam Lines Exceeded Leak Rate Per Tech Specs.Caused by Normal Wear & Erosion
References
LER-80-003-03L, LER-80-3-3L, NUDOCS 8002080423
Download: ML19262C234 (2)

LER-1980-003, /03L-0:on 800112,while Performing Local Leak Rate Testing During Refueling Shutdown,Path Leakage Through MSIVs for 3 of 4 Main Steam Lines Exceeded Leak Rate Per Tech Specs.Caused by Normal Wear & Erosion

Event date:
Report date:
2591980003R03 - NRC Website

text

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EVENT OESCRIPTION AND PROB ABLE CONSEQUENCES h l While in cold shutdown for refueling, local leak rate testing was performed in accor-l oi2 l dance with technical specification 4.7.A.2.g.

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.I Oce_ut rence Local leak rate testing revealed excessive path leakage through three of the four main steam line isolation valves. Actual leak rates for the 3 valves will be reported on a followup report.

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