05000325/LER-1981-045-03, /03L-0:on 810330,after Recovery from Scram, Determined That Main Steam Isolation Valve on Main Steam Line C Experienced stem-disk Separation.Cause Possibly Related to Pins Used to Prevent Disk from Unscrewing

/03L-0:on 810330,after Recovery from Scram, Determined That Main Steam Isolation Valve on Main Steam Line C Experienced stem-disk Separation.Cause Possibly Related to Pins Used to Prevent Disk from Unscrewing

ML19345G850
Person / Time
Site:	Brunswick
Issue date:	04/16/1981
From:	Poulk R CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19345G847	List: 05000325/LER-1981-045, Forwards LER 81-045/03L-0 05000325/LER-1981-045-03, /03L-0:on 810330,after Recovery from Scram, Determined That Main Steam Isolation Valve on Main Steam Line C Experienced stem-disk Separation.Cause Possibly Related to Pins Used to Prevent Disk from Unscrewing
References
LER-81-045-03L-01, LER-81-45-3L-1, NUDOCS 8104220506
Download: ML19345G850 (1)

LER-1981-045, /03L-0:on 810330,after Recovery from Scram, Determined That Main Steam Isolation Valve on Main Steam Line C Experienced stem-disk Separation.Cause Possibly Related to Pins Used to Prevent Disk from Unscrewing

Event date:
Report date:
3251981045R03 - NRC Website

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@ l E.ither the inboard or outboard MSIV on main steam line "C" experienced a stem-disk I o i s 1 I separation. Both valves were shut and deactivated. This event has occurred several _j This event did not affect the 1 i o is 1 I times on Unit No. 2 the last reported in LER 2-81-06.

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