ML20064B631

Forwards Safety Evaluation & Rev 2 to Final Technical Evaluation Rept SAIC-89/1153 Re Response to Station Blackout Rule.Requests Schedule for Implementation of Recommendations in Safety Evaluation

ML20064B631
Person / Time
Site:	Point Beach
Issue date:	10/03/1990
From:	Samworth R Office of Nuclear Reactor Regulation
To:	Fay C WISCONSIN ELECTRIC POWER CO.
Shared Package
ML20064B632	List: ML20064B631 ML20064B633
References
TAC-68586, TAC-68587, NUDOCS 9010180222
Download: ML20064B631 (4)

Text

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October 3, 19M Docket Nos. 50-266 and 50-301 Mr. C. W. Fay, Vice President Nuclear Power Department Wisconsin Electric Power Company 231 W. Michigan Street, Room 308 Milwaukee, Wisconsin 53201

SUBJECT:

SAFETY EVALUATION OF THE POINT BEACH RESPONSE TO THE STATION BLACK 0UT RULE (TAC NOS. 68586 AND 68587)

We have completed our review of your April 17, 1989, response to the station blackout rule.

Our review considered supplemental information obtained sub-sequent to your initial response.

Specifically, with the assistance of a contractor (Schnee Applications International Corporation (SAIC)) we performed a site audit fr.w August 15 to August 18, 1989. On September 26,1989, you submitted a letter providing additional information about we status of the gas turbine generator (GTG) as an alternate AC power source for Point Beach Nuclear Plant.

By letter dated March 30, 1990, you provided information concerning effects of loss of ventilation. By letter dated June 29, 1990, you provided information concerning gas turbine testing and reliability.

By letter dated August 3, 1990, you advised of your intent to install two additional diesel generators and two additional station batteries.

A copy of our safety evaluation is enclosed. Attached to the Safety Evaluation is a copy of the report provided to us by our contractor:

" Technical Evalu-ation Report, Point Beach Nuclear Power Plant Units 1 and 2, Station Blackout Evaluation," SAIC-89/1153, Revision 2, Final, July 31, 1990. The safety evaluation identifies additional tests and analyses which you must complete.

These include a demonstration that the GTG can attain and maintain a 0.95 reliability index, establishment of test and surveillance procedure: to ensure that the GTG reliability is maintained at an acceptable level, a test to demonstrate that the GTG can power station blackout loads within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> of the blackout, battery capacity calculations, and documentation supporting heat-up calculations.

The additional information required by the safety evaluation need not be submitted but should be retained and made available for further inspection by NRC.

The safety analysis recommends a revision to technical specifications regarding the condensate storage tank. The staff has not addressed how technical speci-fications for the station blackout equipment should be applied.

Further guidance on this may be provided at a later date, in the meanwhile, it is our expectation that you will incorporate appropriate testing and surveillances in your plant procedures to ensure the operability of station blackout equipment.

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-2 Based on our review, we find your desig'n and proposed method of dealing with a:

station blackout to be in conformance with the rule. This finding is con.

tingent upon your notification to us that the recommendations in the safety evaluation will be implemented. Within 30 days of receipt of this letter, please provide us with your schedule for implementation.

Sincerely, l

Original Signed By:

Robert B. Sanworth, Project Manager Project Directorate 111-3 Division of Reactor Projects - 111, IV, Y and Special Projects Office of Nuclear Reactor Regulation Fnclosure: Safety Evaluation with attached Technical Evaluation Report

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. Wisconsin Electric Power Company Units 1 and 2 cc:

Ernest L. Blake, Jr.

Shaw, Pittman, Potts and Trowbridge 2300 N Street,-N.W.

Washington, DC' 20037 Mr. Gregory J. Maxfield, Manager Point Beach Nuclear Plant Wisconsin Electric Power Company 6610 Nuclear Road Two Rivers, Wisconsin 54241 Town Chairman Town of Two Creeks.

Route 3 Two Rivers, Wisconsin 54241 i

Chairman Public Service Commission of Wisconsin-Hills Farms State Office Building Madison, Wisconsin 53702 Regional Administrator, Region Ill U.S. Nuclear Regulatory Commission Office of Executive Director for Operations 799 Roosevelt Road

. Glen Ellyn Illinois 60137 Resident Inspector's Office U.S. Nuclear Regulatory Commission 6612 Nuclear Road' Two Rivers, Wisconsin 54241

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station blackout to be in conformance with the rule. This finding is con-tingent upon your notification to us that the recommendations in the safety i

evaluation will be implemented. Within 30 days of receipt of this letter, i

please provide us with your schedule for implementation, j

Sincerely,-

OriginalSigned By:

Robert B. Samworth, Project Manager Project Directorate 111-3 i

Division of Reactor Projects. III, I

IV, V and Special Projects Office of Nuclear Reactor Regulation l

Enclosure:

Safety Evaluation with attached Technical Evaluation Report SAIC-89/1153 i

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