ML19247A454
| ML19247A454 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 05/15/1979 |
| From: | Schwencer A Office of Nuclear Reactor Regulation |
| To: | Barton A ALABAMA POWER CO. |
| References | |
| NUDOCS 7907310568 | |
| Download: ML19247A454 (1) | |
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UNITED STATES NUCLEAH REGULATORY CC.,' MISSION g
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May 15, 1979
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Docket No. 50-348 Mr. Alan R. Barton Senior Vice President Alabama Power Company Post Office Box 2641 Bi rmingham, Alabama 35291
Dear Mr. Barton:
Enclosed for your information is a co y of a letter r
sent to one of the licensees of a Westinghouse two loop plant.
A similar letter has been sent to the licensees of the other Westinghouse two loop plants. Note that the use of the rod bank ext hange program has not yet been approved for other than these two locp plants.
Sincerely,[
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A. Schwencer, Chief Operating Reactors Branch al Division of Operating Reactors
Enclosure:
As Stated cc:
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'79073107 6*6 q
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I Mr. \\lan R. Barton l
Alabama Power Company May 15, 1979 l
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cc:
Ruble A. Thomas, Vice President Southern Services, Inc.
Post Office Box 2625 Birmingham, Alabama 35202 I
George F. Trowbridge, Esquire Shaw, Pittman, Potts and Trowbridge 1800 M Street, N.W.
Washington, D. C.
20036 John Singham, Esquire Balch, Bingham, Baker, dawthorne, Williams and Ward i
600 *' orth 18th Street Birmingham, Alabama 3520.
e Edward H. Keiler, Esquire Keiler and Buckley 9047 Jefferson Highway River Ridge, Louisiana 70123 George S. Houston Memorial Library 212 W. Berdeshaw Street Dethan, Alabama 36303 l~
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,.c e-UNITED STATES rJUCLEAR REGULATORY COP.'.Miss!OfJ
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WASHINGTON, o. C. 20555 t
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May 15, 1979 Docket fjo. 50-305 Mr. Eugene R. flathews, Vice Presider,t Power Supply and Engineerirg Wisconsin Public Service Corporation P. O. Box 1200 Green Bay, Wisconsin 54305
Dear llr,
!!athews:
The Nuclear '.egulatory Commission staff has reviewed information submitted by the Westinghouse Corporation and two licensees of two loop plants regard'ng the use of the rod bank exchange (rod swap) method to verif; shutdown margin for two lcop Westinghouse nuclear steam suppl 3 systems.
Based ori our revies, we approve the use of tais method as an alternative to the boron exchange method of verifying shutdown margin for these two loop NSSSs providing the following conditions are met:
1.
The analysis for predicting rod worths and shutdown margin is performed by Westinghouse using the technique proposed to the NRC at the September 1978 meeting.
2.
All rod banks are measured.
3.
Written approval is obtained from the NRC prior to use of the rod exchange method.
Approval will be based on NRC review of your review and acceptance criteria for these rod exchange tests. Once we approve your review and acceptance criteria, they need not be resubmitted unless changed.
4.
The test procedure for this method is that identified in a Westinghouse letter to NRC dated April 24, 1979.
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Mr. " ene R. fiathews May 15,1979 5.
Within 45 days after the first verification cf shutdown margin using the rod bank exchange cethod, the test data is formally submitted to the t'RC.
This approval is only for plants with a two loop f;SSS.
Addi tional inf' rmation and further review will be required before we can J
reach a conclusion on the use of this method for three and four loop plants.
Sincerely,,
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A. Schwencer, Chief Operating Reactors Branch 31 Division of Operating Reactors cc:
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