ML18096A669
| ML18096A669 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 04/29/1992 |
| From: | Miltenberger S Public Service Enterprise Group |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| IEB-88-011, IEB-88-11, NLR-N92040, NUDOCS 9205050006 | |
| Download: ML18096A669 (2) | |
Text
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Public Service Electric and Gas Co_mpany Steven E. Miltenberger Public Service Electric and Gas Company P.O. Box 236, Hancocks Bridge, NJ 08038 609-339-1100 Vice President and Chief Nuclear Officer APR 2 fl 1Q92 NLR-N92040 United States Nuclear Regulatory Cc;>mmission Document Control Desk Washington, *DC 20555 Gentlemen:
NRC BULLETIN 88-11 PRESSURIZER SURGE LINE THERMAL STRATIFICATION SALEM GENERATING STATION UNIT NO. 2 DOCKET NO.
- 50-311 By letters dated May 15, 1991 and June 17, 1991 (ref: NLR-N91083 and NLR-N91100), Public Service Electric & Gas Company (PSE&G) committed to perform spring hanger modifications on the pressurizer surge line during the seventh refueling outage.*
Prior *to performing these modifications, PSE&G committed to perform walkdowns to detenuine the locations of temporary.
supports and shielding.
This letter is to inform you that PSE&G has completed the required walkdowns for Salem Unit No. 2 during the sixth refueling outage.
The results of these* wal*kdowns have been documented for use during the modifications to be performed during the seventh refueling outage.
In addition, PSE&G.has contracted Westinghouse to perform a more detailed structural an~lysis of the pressurizer surge line.
Configurations considered* in the more detailed analysis include
- 1) the qualification of. secondary stres-ses and fatigue usage with rigid stiffness assumed at the bottomed out spring locations and
- 2) the qualification of primary stress from assumed spring failure at the bottomed out spring locations.
Preliminary
-results of thi~ analysis indicate that both primary ~nd secondary stresses are qualified with fatigue usage factor le~s.than 1.0 for the surge line for both units.
Hence, the structural integrity of the pressurizer surge line is not compromised in light *of the bottomed out spring hangers. *PSE&G expects the final report. of the more detailed analysis by the end of April 1992.
Based. on the information contained in that report, PSE&G will revise it~ action plan to addres& Bulletin 88-11 concerns.
~205050066 920429 PDR ADOCK 05000311 G.
PDR.
- t>.ocument Control Desk NLR-N92040 2
Should there be any questions with regard to-this submittal, pleas~ do not hesitate to contact us.
C Mr. J. C. Stonec Licensing Project Ma_nager Mr. T. Johnson Senior Resident Inspector Mr. T. Martin, Administrator Region I Mr. Kent Tosch, Chief New Jersey Department of Environmental Protection Division of Environmental Quality Bureau of Nuclear Engineering CN 415 Trenton, NJ 08625