ML022480302

Loss of Coolant Accident, Peak Clad Temperature Annual Report

ML022480302
Person / Time
Site:	Salem
Issue date:	08/27/2002
From:	John Carlin Public Service Enterprise Group
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
LRN-02-0304
Download: ML022480302 (4)

Text

PSEG Nuclear LLC P.O Box 236, Hancocks Bndge, New Jersey 08038-0236 A0 PSEG.

AUG 47 2002 Nuclear LLC LRN-02-0304 United States Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 Gentlemen:

SALEM LOSS OF COOLANT ACCIDENT PEAK CLAD TEMPERATURE ANNUAL REPORT SALEM GENERATING STATION, UNIT NOS. I AND 2 FACILITY OPERATING LICENSE DPR-70 AND DPR-75 DOCKET NOS. 50-272 AND 50-311 In accordance with the requirements of 10 CFR 50.46, PSEG Nuclear LLC (PSEG) hereby submits its annual report to the NRC identifying the status of the peak clad temperatures (PCTs) predicted by the Large Break (LB) and Small Break (SB) Loss of Coolant Accident (LOCA) evaluation models for Salem Generating Station. The most recent PCT report filed with the NRC for Salem is dated August 27, 2001 (Reference LRN-01-0265), and it reported the following values.

51 LB LOCA-PCTiast report = 2056°F S1 SB LOCA-PCTiast report = 1689'F S2 LB LOCA-PCTiast report = 2056°F S2 SB LOCA-PCTiast report = 1689°F One PCT change has been identified since our last report, as described below.

LBLOCA Evaluation Addressing Increase In Accumulator Water Temperature As a result of a Nuclear Procurement Issues Council (NUPIC) audit of Westinghouse, it was discovered that Westinghouse was using a non conservative value of 98°F for Emergency Core Cooling System accumulator water temperature, instead of 1 10°F as specified by PSEG. Prior Westinghouse sensitivity studies have shown that there is a 1.60 F increase in PCT per 1.0°F A/DD 95-2168 REV 7/99

AUG Z 7 2002 Document Control Desk LRN-02-0304 increase in accumulator water temperature. As such, the LB LOCA-PCT for both Salem Units has increased by 20°F to 20760 F.

Thus, the current PCT for Salem Units 1 and 2 is summarized below. The Salem LOCA analyses remain within the criteria set forth in 10 CFR 50.46, and no additional analysis is necessary.

S1 LB LOCA-PCTcurrent = 2076°F (2056°F + 20 0 F)

S1 SB LOCA-PCTcurrent = 1689°F (no change)

S2 LB LOCA-PCTcurrent = 2076°F (2056°F + 20 0 F)

S2 SB LOCA-PCTcurrent = 1689°F (no change)

Sending a 30-day PCT report to the NRC was not necessary because the absolute value of this previously unreported change to the PCT is less than 50'F.

Should you have any questions regarding this response, please contact Mr. William McTigue at (856) 339-1033.

in de Tresident'-- Nuclear Reliability and Technical Support

AUG '7 2002 Document Control Desk -3 LRN-02-0304 C Mr. H. J. Miller, Administrator - Region I U. S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 U. S. Nuclear Regulatory Commission Attn: Mr. R. Fretz Licensing Project Manager - Salem Mail Stop 08B2 Washington, DC 20555-0001 USNRC Senior Resident Inspector - Salem (X24)

Mr. K. Tosch, Manager IV Bureau of Nuclear Engineering P.O. Box 415 Trenton, NJ 08625

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