ML20073H863
| ML20073H863 | |
| Person / Time | |
|---|---|
| Site: | Mcguire, Catawba, McGuire  |
| Issue date: | 04/30/1991 |
| From: | Tuckman M DUKE POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| IEB-88-011, IEB-88-11, NUDOCS 9105070290 | |
| Download: ML20073H863 (2) | |
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h DUKEPOWER April 30,1991 U. S. Nuclear Regulatory Commission ATrN: Document Control Desk
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Washington, DC 20555
Subject:
_ Catawba Nuclear Station, Units 1 and 2 Docket Nos. 50 413 and 50-414 McGuire Nuclear Station, Units 1 and 2 Docket Nos. 50 369 and 50 370 NRC Bulletin 88-11 Pressurizer Surge Line Thermal Stratification E
In a letter dated December 19, 1990, Duke Power Company stated that it would make a j
full response to the NRC pursuant to the requirements of NRC Bulletin 8811 by May 1,
- 1991, Duke Power has concluded that the pressurizer surge line and associated support / restraints for McGuire and Catawba are in compliance with the licensing commitments and evaluation requirements stated in Bulletin 88-11, Duke Power has performed the plant specific analysis as described in the December 19, 1991 submittal which involved applying the work done on a generic basis by _ Westinghouse to the specifics of each of the four McGuire and Catawba units. This work confirms Westinghouse's conclusion that the surge lines meet all applicable ASME stress and fatigue -
limits by significant margins and shows that the forces and displacements at the
- support / restraints are within allowable limits, Westinghouse is still in the process of reviewing the pressurizer surge line nozzle and is committed to provide Duke Power with a draft of these results by June 6,1991._ Duke -
Power will provide the NRC with the results of the remaining pressurizer surge line nozzle
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4 U. S. Nuclear Regulatory Commission April 30,1991 Page 2 analysis within 10 days of finalizing the Westinghouse draft.
All documentation for Bulletin 8811 will be in place by July 15, 1991.
Very truly yours, h, T.
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hi. S. Tuckman CRIJBUL8811 xc:
Regional Administrator USNRC, Region 11 Catawba Project hinnager, ONRR USNRC Catawba Senior Resident inspector USNRC hicGuire Project hianager, ONRR USNRC hicGuire Senior Resident inspector USNRC