05000361/LER-1982-162-03, /03L-0:on 821207,w/plant in Mode 1,low Pressure Tubine Stop Valve 2UV-2200V on Low Pressure Turbine 3 Failed to Fully Close.Caused by Excessive Galling Between Disc Stub Shaft & Casing Bore.Stub Shaft Cleaned

/03L-0:on 821207,w/plant in Mode 1,low Pressure Tubine Stop Valve 2UV-2200V on Low Pressure Turbine 3 Failed to Fully Close.Caused by Excessive Galling Between Disc Stub Shaft & Casing Bore.Stub Shaft Cleaned

ML20028D847
Person / Time
Site:	San Onofre
Issue date:	01/06/1983
From:	Ray H SOUTHERN CALIFORNIA EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
Shared Package
ML20028D846	List: 05000361/LER-1982-162, Forwards LER 82-162/03L-0.Detailed Event Analysis Submitted 05000361/LER-1982-162-03, /03L-0:on 821207,w/plant in Mode 1,low Pressure Tubine Stop Valve 2UV-2200V on Low Pressure Turbine 3 Failed to Fully Close.Caused by Excessive Galling Between Disc Stub Shaft & Casing Bore.Stub Shaft Cleaned
References
LER-82-162-03L, LER-82-162-3L, NUDOCS 8301200018
Download: ML20028D847 (1)

LER-1982-162, /03L-0:on 821207,w/plant in Mode 1,low Pressure Tubine Stop Valve 2UV-2200V on Low Pressure Turbine 3 Failed to Fully Close.Caused by Excessive Galling Between Disc Stub Shaft & Casing Bore.Stub Shaft Cleaned

Event date:
Report date:
3611982162R03 - NRC Website

text

NRC FOIM 366 U. S. NUCLEAR RE*ULATZY COMMISSION LICENSEE EVENT REPORT CONTROL 8 LOCK: l l

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e EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROSA8LE CONSEQUENCES h 1012l lWith the plant in Mode 1, low pressure turbine stop valve 2VV-2200V located on Low I

l Pressure Turbine #3 failed to close fully and was declared inoperable.

Since the l

0 3 laffected steam lead was isolated by closing the control valve on the lead, there l

0 4 lwas no impact on the health and safety of plant personnel or the public. '(See 1

0 s lalso LER's82-153 and 82-154.)

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l and reassembly, the valve was returned to operable status on December 28, 1982.

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