ML20039C200

Affidavit of Rt Skwarek Re Evaluations of Postulated Valve Failures.In Hypothetical Case of Pressurizer Safety,Relief & Block Valves Failure,Public Health & Safety Would Not Be Endangered.W/Prof Qualifications & Certificate of Svc

ML20039C200
Person / Time
Site:	Diablo Canyon
Issue date:	12/15/1981
From:	Skwarek R WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
To:
Shared Package
ML20039C190	List: ML20039C189 ML20039C192 ML20039C193 ML20039C195 ML20039C196 ML20039C200
References
NUDOCS 8112290037
Download: ML20039C200 (5)

Text

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AFFIDAVIT OF RAYM0ND J. SKWAREK Commonwealth of Pennsylvania County of Allegheny Raymond J. Skwarek being duly sworn accordingly to Law deposes and says; (1) I am Manager of Reload Fuel and Forces Analysis, Nuclear Safety Depart-ment, for the Nuclear Technology Division, Westinghouse Power Systems Company, Westinghouse Electric Corporation (" Westinghouse"), and as such I am authorized to execute this Affidavit. A s".atement of my Professional Qualifications is attached.

(2) With regard to evaluations of postulated valve failures at Diablo Canyon Power Plant (DCPP), Westinghouse has performed analyses of postulated loss of coolant accidents (LOCAs) in the pressurizer vapor space for a plant substantially identical to DCPP. These analyses were performed for 100 percent power level.

Analyses performed included the extremely unlikely case that all three pressurizer power-operated relief valves (PORVs) of the size installed at DCPP were postulated to have stuck completely open. These analyses were performed with a United States Nuclear Regulatory Commission approved evaluation model, which includes the assumption of minimum safeguards.

No core uncovery was predicted to occur. Therefore, if all three of the pressurizer PORVs failed completely open at DCPP, no core uncovery would be expected.

It should be noted that these PORV LOCA analyses also assume that the pressurizer PORV block valves failed to close. Therefore, if all of the pressurizer PORVs failed to close at DCPP, no core uncovery would be expected.

Details of these analyses have been documented in WCAP-9601, " Report on Small Break Accidents for Westinghous .!SSS System. "

8112290037 811221' PDR ADOCK 05000275 g PDR

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(3) As discussed above, even in the hypothetical case of the DCPP pres-surizer safety, relief, and block valves failing to close, the public health and safety would not be endangered.

Further the affiant sayeth not.

Scsgru>d , hkw kaymond d. Skwarck Sworn to and subscribed before me this 15th day of December, 1981.

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PROFESSIONAL QUALIFICATIONS RAYMOND J. SKWAREK WESTINGHOUSE WATER REACTOR DIVISIONS WESTINGHOUSE POWER SYSTEMS COMPANY WESTINGH0USE ELECTRIC CORPORATION My name is Raymond J. Skwarek. My business address is Westinghouse Electric Corporation, P. O. Box 355, Pittsburgh, Pennsylvania,15230. I am employed by Westinghouse Electric Corporation as Manager of Reload Fuel and Forces Analysis within the Nuclear Safety Department of the Nuclear Technology Division. I am responsible for the safety evaluation relating to the licensing and operation of nuclear power plants with respect to the emergency core cooling system performance during a postulated loss of coolant accident (LOCA).

I attended Drexel University, Philadephia, Pennsylvania, from 1969 to 1974 and received a Bachelor of Science Degree in Mechanical Engineering. I attended graduate school at Stanford University in 1974-75 and received a Masters Degree in Mechanical Engineering with emphasis in the thermosciences.

In 1975, I joined Westinghouse Electric Corporation as an Engineer in the Safeguards Analysis I Group with responsibilities in the area of design, analysis and evaluation of emergency core cooling systems performance on light water reactors during LOCAs. Specific topics on which I have concentrated since joining that group include small break LOCA analysis and model development, and post-Three Mile Island LOCA concerns. In 1981, I was appointed to position of Manager, Reload Fuel and Forces Analysis, responsible for LOCA analysis, licensing, and model development for reload cores of Westinghouse and competitor nuclear steam supply systems.

I UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION BEFORE THE ATOMIC SAFETY AND LICENSING BOARD In the Matter of )

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PACIFIC GAS AND ELECTRIC COMPANY ) Docket No. 50-275

) Docket No. 50-323 Diablo Canyon Nuclear Power Plant, )

Units 1 and 2 ) "

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CERTIFICATE OF SERVICE The foregoing document (s) of Pacific Gas and Electric Company Xxt3 (have) been served today on the following by deposit in the United States mail, properly stamped and addressed:

Judge John F. Wolf Mrs. Sandra A. Silver Chairman 1760 Alisal Street Atomic Safety and Licensing Board San Luis Obispo, California 93401 U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Mr. Gordon Silver 1760 Alisal Street Judge Glenn O. Bright San Luis Obispo, California 93401 Atomic Safety and Licensing Board U. S. Nuclear Regulatory Commission John Phillips, Esq.

Washington, D. C. 20555 Joel Reynolds, Esq.

Center for Law in the Public Interest Judge Jerry R. Kline 10951 W. Pico Boulevard - Suite 300 Atomic Safety and Licensing Board Los Angeles, California 90064 U. S. Nuclear Regulatory Commission Washington, D. C. 20555 David F. Fleischaker, Esq.

P. O. Box 1178 Mrc. Elizabeth Apfelberg Oklahoma City C/o Nancy Culver Oklahoma 73101 192 Luneta Drive San Luis Obispo, California 93401 Arthur C. Gehr, Esq.

Snell & Wilmer Janice E. Kerr, Esq. 3100 Valley Bank Center i Public Utilities Commission Phoenix, Arizona 85073 of the State of California 5246 State Building Bruce Norton, Esq.

350 McAllister Street Norton, Burke, Berry & French, P.C.

San Francisco, California 94102 3216 N. Third Street Suite 300 Mrs. Raye Fleming Phoenix, Arizona 85012-2699 1920 Mattie Road Shell Beach, California 93449 Chairman Atomic Safety and Licensing Mr. Frederick Eissler Board Panel Scenic Shoreline Preservation U. S. Nuclear Regulatory Commission Conference, Inc. Washington, D. C. 20555 4623 More Mesa Drive Santa Barbara, California 93105

Chairman Judge Thomas S. Moore Atomic Safety and Licensing Chairman Appeal Panel Atomic Safety and Licensing i U. S. Nuclear Regulatory Commission Appeal Board Wachington, D. C. 20555 U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Sscretary U. S. Nuclear Regulatory Commission Judge W. Reed Johnson Waehington, D. C. 20555 Atomic Safety and Licensing Appeal Board Attn.: Docketing and Service Section U. S. Nuclear Regulatory Commission Washington, D. C. 20555 William J. Olmstead, Esq.

Bradley W. Jones, Esq. Judge John H. Buck Office of Executive Legal Director Atomic Safety and Licensing BETH 042 Appeal Board U. S. Nuclear Regulatory Commission U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Washington, D. C. 20555 Mr. Richard B. Hubbard MHB Technical Associates 1723 Hamilton Avenue, Suite K Scn Jose, California 95125 Mr. Carl Neiberger Telegram Tribune P. O. Box 112 San Luis Obispo, California 93402 Herbert H. Brown, Esq.

L wrence Coe Lanpher, Esq.

Christopher B. Hanback, Esq.

Kirkpatr,ick, Lockhart, Hill, Christopher & Phillips 1900 M Street, N.W.

Wachington, D. C. 20036 Byron S. Georgiou, Esq.

Legal Affairs Secretary Governor's Office State Capitol S cramento, California 95814 1

p Ph Y ip A. Crane Jr.

Attorney Pacific as and Electr(,ic Company Date: December 21, 1981