05000361/LER-1982-153-03, /03L-0:on 821130,following Turbine Trip,Low Pressure Turbine Stop Valve 2UV-2200R Failed to Close.Caused by Excessive Galling Between Disc Stub Shafts & Casing Bore. Clearance Between Shaft & Bore Increased

/03L-0:on 821130,following Turbine Trip,Low Pressure Turbine Stop Valve 2UV-2200R Failed to Close.Caused by Excessive Galling Between Disc Stub Shafts & Casing Bore. Clearance Between Shaft & Bore Increased

ML20028D299
Person / Time
Site:	San Onofre
Issue date:	12/29/1982
From:	Ray H SOUTHERN CALIFORNIA EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
Shared Package
ML20028D290	List: 05000361/LER-1982-153-03, /03L-0:on 821130,following Turbine Trip,Low Pressure Turbine Stop Valve 2UV-2200R Failed to Close.Caused by Excessive Galling Between Disc Stub Shafts & Casing Bore. Clearance Between Shaft & Bore Increased 05000361/LER-1982-154-03, /03L-0:on 821130,following Turbine Trip,Low Pressure Turbine Stop Valve 2UV-2200R Failed to Close.Caused by Excessive Galling Between Disc Stub Shafts & Casing Bore. Clearance Between Shaft & Bore Increased ML20028D289
References
LER-82-153-03L, LER-82-153-3L, NUDOCS 8301170297
Download: ML20028D299 (1)

LER-1982-153, /03L-0:on 821130,following Turbine Trip,Low Pressure Turbine Stop Valve 2UV-2200R Failed to Close.Caused by Excessive Galling Between Disc Stub Shafts & Casing Bore. Clearance Between Shaft & Bore Increased

Event date:
Report date:
3611982153R03 - NRC Website

text

MRC FORM 366 U. S. NUCLE AR REGULATORY COMMISSION (7 77)

LICENSEE EVENT REPORT CONTRnl BLOcct: l l

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8 60 61 DOCKET NUM8ER 68 69 EVENT DATE 74 75 REPOR ; OATE 80 EVENT DESCRIPTION AND pro 8ABLE CONSEQUENCES h 10121 lWith the plant in Mode 1 and following a turbine trip, low pressure turbine stop valvel l2VV-2200R located on Low Pressure Turbine #2 failed to close fully and was declared l

O 3 l O i 41 l inoperable. Since the affected steam lead was isolated by closing the control l

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