ML19340E527
| ML19340E527 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 12/12/1980 |
| From: | Varga S Office of Nuclear Reactor Regulation |
| To: | Clayton F ALABAMA POWER CO. |
| References | |
| NUDOCS 8101140831 | |
| Download: ML19340E527 (3) | |
Text
W onero UNITED STATES
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Mr. F. L. Clayton, Jr.
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Senior Vice President Ed
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Alabama Power Company R
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Dear Mr. Clayton:
By letter dated March 28, 1980 you requested Technical Specification changes for Farley Unit No.1 relating to calculations of the fuel rod bow penalty. On November 17, 1980 members of our staff and the NRC Project Manage, Ed Reeves, discussed some concerns relating to your proposals.
1 The enclosure to this letter documents our concerns. Please provide a response at your convenience in order that our review of your application may continue. Should you have any questions, your staff should contact the NRC Project Manager.
i Sincerely,
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CevenA\\{Varga,Chd f
Operating Reactor ~
anch #1 Division of Licensi
Enclosure:
Request for Additional Information cc: w/ enclosure See next page l
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J Mr. F. L. Clayton, Jr.
Alabama Power Company December 12, 1980 cc: Mr. W. O. Whitt Executive Vice President Alabama Power Company Post Office Box 2641
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Birmingham, Alabama 35291 Ruble A. Thomas, Vice President Southern Company Services, Inc.
Post Office Box 2625 Birmingham, Alabama 35202 George F. Trowbridge, Esquire Shaw, Pittman, Potts and Trowbridge 1800 M Street, N.W.
Washington, D. C.
20036 Mr. Robert A. Buettner, Esquire Balch, Bingham, Baker, Hawthorne, Williams and Ward Post Office Box 306 Birmingham, Alabama 35201 George S. Houston Memorial Library 212 W. Burdeshaw Street Dothan, Alabama 36303 Resident Inspector U. S. Nuclear Regulatory Commission Post Office Box 1814 Dothan, Alabama 36302 l
s' Enclosure REQUEST FOR ADDITIONAL INFORMATION JOSEPH M. FARLEY UNIT NO.1 490.0 Reactor Fuels Section, Core Performance Branch 490.1 Describe what margins were used to offset the reduction in DNBR due tc fuel rod bowing.
Has NRC approved these margins for Farley applications?
If not, please provide the necessary justification.
490.2 Are the margins used to offset rod bowing DNBR penalties employed solely for this purpose? If not, please provide justification for using these margins more than once.
490.3 The reduction in DNBR due to rod bowing for the loss-of-flow transient and N-1 loop operation is greater than the reduction in DNBR for other conditions.
Is additional available margin used, or is the calculated limiting DNBR sufficiently large to offset this incremental penalty?
490.4 State the reasons or justification for discontinuing rod bowing penalty calculations at 33,000 MWD /MTU.
490.5 Amend the basis of the technical specifications to identify each generic or olant-specific margin that has been used to offset the i
reduction in DNBR due to rod bowing.
Also reference either the source or approval 9f each generic margin.
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