ML20052C147

Potential Deficiency Rept Re Failure of Main Steam Dump to Atmosphere Valves to Return Consistently to Normally Closed Position Upon Loss of Control Air Pressure,Per 820423 Telcon.Util Performing Evaluation of Condition

ML20052C147
Person / Time
Site:	San Onofre
Issue date:	04/23/1982
From:	Curran J SOUTHERN CALIFORNIA EDISON CO.
To:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
10CFR-050.55E, 10CFR-50.55E, NUDOCS 8205040427
Download: ML20052C147 (2)

Text

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Dockec No. 50-362 c ~ m, ;.3

. 50.55(e) Report

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& ?a U a Southern California Edison Company ..

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J. M. CU R R A N April 23, 1982 MANAGEN QUALily AS5UR ANCE 1233) 572 1695 Mr. R. H. Engelken, Regional Administrator '/  ;) /

Office of Inspection and Enforcement N6d U. S. Nuclear Regulatory Commission Region V  !

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1450 Maria Lane, Suite 210 '

J' s. 3 J Walnut Creek, CA 94506 y' 7

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Dear Mr. Engelken:

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Subject:

Docket No. 50-362 San Onofre Nuclear Generating Station, Unit

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This letter confirms verbal notification on April 23, 1982 of a condition discovered in construction which is considered potentially reportable in accordance with 10CFR50.55(e). The condition involves the Main Steam Dump To Atmosphere Valves. It has been observed during testing that the valves would not return consistently to normally closed position upon loss of control air pressure as they are required to do under certain accident condit. ions .

We are performing an evaluation of this condition and will submit an appropriate report in accordance with 10CFR50.55(e)

(3) if the condition is determined to be reportable. If you have any questions or require additional information, please let me know.

Sincerely,

, d. bW" cc: A. E. Chaffee (NRC, San Onofre Units 2 & 3)

Dr. L. T. Papay 8205040427 820423 qq PDR ADOCK 05000362 c,. j S PDR

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i Mr. R. H._Engolksn April 23, 1982 bec: Robert Dietch D. E. Nunn D. G. Cotton (SDG&E)

D. R. Pigott-(Orrick, Herrington & Sutcliffe)

H. L. Richter K. P. Baskin J. G. Haynes W. W. Strom H. B. Ray B. Katz, M. P. Short P. A. Croy H. S. Leasure J. J. Wambold G. A. Chavez D. M. Barron D. E. Sparks (3j L. L. Seyler D. B. Schone J. M. Curran QA Files 55(e) 82-03 CDMC t

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