ML20057E096

Forwards Request for Addl Info Re Licensee 930423 Amend Request Concerning Ultimate Heat Sink TS for Plant

ML20057E096
Person / Time
Site:	Hope Creek
Issue date:	09/30/1993
From:	Stephen Dembek Office of Nuclear Reactor Regulation
To:	Miltenberger S Public Service Enterprise Group
References
TAC-M86307, NUDOCS 9310070278
Download: ML20057E096 (4)

Text

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Docket No. 50-354 September 30, 1993 i

Mr. Steven E. Milter.berger Vice President and Chief Nuclear Officer Public Service Electric and Gas Company Post Office Box 236 -

Hancocks Bridge, New Jersey 08038

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION, HOPE CREEK GENERATING STATION (TAC N0. M86307)

The NRC staff has completed a preliminary review of your license amendment request dated April 2'3 1993, concerning the ultimate heat dnk (UHS)

Technical Specificatior. ar the Hope Creek Generating Station. The request proposes decreasing t'+ oximum allowable value of average river temperature from 90.5'F to 88.6*F, revising the action statement associated with the limiting condition for operation to permit continued normal operation for a period of 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> with the average river temperature greater than the maximum allowable value, increasing the required frequency of monitoring river temperature when above 85*F from once every 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> to once every 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />, and revising the bases associated with the UHS Technical Specification. A conference call was held with members of your staff on August 30, 1993, which clarified some aspects of the amendment request. Additional information is requested, as detailed in the enclosure, in order for the staff to complete their review.

It is requested that the additional information be provided within 30 days of the date of this letter. This requirement affects 9 or fewer respondents and, therefore, is not subject to Office of Management and Budget review under P.L.

96-5I1.

Sincerely,

/S/

Stephen Dembek, Project Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

Enclosure:

Request for Additional Information cc w/ enclosure:

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September 30, 1993 i

Docket No. 50-354 Mr. Steven E. Miltenberger Vice President and Chief Nuclear i

Officer Public Service Electric and Gas Company Post Office Box 236 Hancocks Bridge, New Jersey 08038

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION, HOPE CREEK GENERATING STATION (TAC N0. M86307)

The NRC staff has completed a preliminary review of your license amendment request dated April 23, 1993, concerning the ultimate heat sink (UHS)

Technical Specification for the Hope Creek Generating Station. The request proposes decreasing the maximum allowable value of average river temperature from 90.5'F to 88.6*F, revising the action statement associated with the limiting condition for operation to permit continued normal operation for a i

period of 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> with the average river temperature greater than the maximum allowable value, increasing the required frequency of monitoring river temperature when above 85'F from once every 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> to once every 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />, and revising the bases associated with the UHS Technical Specification. A conference call was held with members of your staff on August 30, 1993, which clarified some aspects of the amendment request. Additional information is requested, as detailed in the enclosure, in order for the staff to complete their review.

It is requested that the additional information be provided within 30 days of the date of this letter. This requirement affects 9 or fewer respondents and, therefore, is not subject to Office of Management and Budget review under P.L.96-511.

Sincerely, 1

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i Stephen Dembek, Project Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

Enclosure:

Request for Additional Information 1

cc w/ enclosure:

See.next page I

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ENCLOSURE REQUEST FOR ADDITIONAL INFORMATION REGARDING THE PROPOSED ULTIMATE HEAT SINK TECHNICAL SPECIFICATION REVISION FOR HOPE CREEK GENERATING STATION Public Service Electric and Gas Company (PSE&G) proposed revising the action statement associated with the ultimate heat sink (UHS) limiting condition for i

operation in their submittal dated April 23, 1993. The proposed revision would permit continued operation for a 6-hour period with the average river temperature above the maximum allowed temperature prior to initiating the required action for the operational condition of the plant. The justification for this change was based, in part, on the low probability of river temperature exceeding the maximum allowed temperature occurring coincident with design low river water level and failure of one loop of the station service water system (SSWS) or safety auxiliary cooling system (SACS).

The existing action requirements for the UHS are based on the probability of a demand on the UHS while it is in a degraded condition and the attendant risk-of the UHS not performing its design function.

In addition, the heat removal capability of the SSWS is not substantially impacted by small changes in river water level, provided adequate net positive suction head to the pumps is maintained. Also, a design basis single failure is typically considered when evaluating the performance of the SSWS and the SACS. Therefore, in consideration of the design bases of the UHS, SSWS, and SACS, the probabilistic justification for the proposed revision is not acceptable.

The staff recognizes that the calculated UHS maximum allowable temperature includes many conse.vatisms and that increases in river water temperature above the limit are likely to be transient in nature. Therefore, PSE&G is requested to provide an analysis or other suitable justification demonstrating that a transient increase in river temperature for a 6-hour period above the proposed maximum allowable value is acceptable. Otherwise, the licensee is requested to modify the proposed revision to the UHS Technical Specifications accordingly.

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Mr. Steven E. Miltenberger Hope Creek Generating Station

• o Public Service Electric & Gas Company cc:

M. J. Wetterhahn, Esquire Mr. J. A. Isabella Winston & Strawn MGR. - Generation Department 1400 L Street, N.W.

Atlantic Electric Company Washington, DC 20005-3502 Post Office Box 1500 1199 Black Horse Pike Pleasantville, New Jersey 08232 R. Fryling, Jr., Esquire Law Department - Tower SE Richard Hartung 80 Park Place Electric Service Evaluation Newark, New Jersey 07101 Board of Regulatory Comissioners 2 Gateway Center, Tenth Floor Hope Creek Resident Inspector Newark, NJ 07102 U.S. Nuclear Regulatory Comission Drawer I Lower Alloways Creek Township Hancocks Bridge, New Jersey 08038 c/o Mary 0. Henderson, Clerk Municipal Building, P.O. Box 157 Mr. J. Hagan Hancocks Bridge, NJ 08038 Vice President - Nuclear Operations Nuclear Department Mr. S. LaBruna P.O. Box 236 Vice President - Nuclear Engineering Hancocks Bridge, New Jersey 08038 Nuclear Department P.O. Box 236 Mr. R. Hovey Hancocks Bridge, New Jersey 08038 General Manager - Hope Creek Operations Hope Creek Generating Station P.O. Box 236 Hancocks Bridge, New Jersey 08038 Mr. Frank X. Thomson, Jr., Manager Licensing and Regulation Nuclear Department P.O. Box 236 Hancocks Bridge, New Jersey 08038 Regional Administrator, Region I U.S. Nuclear Regulatory Comission 475 Allendale Road King of Prussia, Pennsylvania 19406 Dr. Jill Lipoti, Asst. Director Radiation Protection Programs NJ Department of Environmental Protection and Energy CN 415 Trenton, New Jersey 08625-0415

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