ML19345D419
| ML19345D419 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 12/08/1980 |
| From: | Sylvia B VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Clark R, Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| 970, NUDOCS 8012150083 | |
| Download: ML19345D419 (1) | |
Text
VIRGINI A E L ECTRIC A ND POW ER COMP AN Y, RIC HMON D. '/lRG4 NI A 23261 ts.,
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'}hN Hitold Rf Denton, Director Serial No.:
970 Officf}ofNuclearReactorRegulation Attn:' Mr. Robert A. Clark, Chief FR/WCB: plc Operating Reactors Branch No. 3 Division of Licensing Docket No.:
50-338 U. S. Nuclear Regulatory Commission Washington, DC 20555 License No.: NPF-4
Dear Mr. Denton:
EXTENSION OF NORTH ANNA 1, CYCLE 2 As discussed with Mr. Leon Engle of the NRC staff, we plan to extend the length of Cycle 2 by up to 13 EFPD beyond the licensed end of cycle burnup through an extended power coastdown.
Since this is outside the burnup range considered in the reload safety evaluation (reference letter from C. M. Stallings to you, Serial No.
867, dated November 2,1979), we have performed a detailed safety evaluation.
The results of this safety evaluation indicate that there will be no adverse impact on reactor systems or reactor operations.
Further, each of the core physics parameters important to the FSAR Chapter 15 transients were reevaluated and the conclusion that all transients meet their safety criteria has been confirmed.
Consequently, continued operation of Cycle 2 in a power coastdown mode for approximately 13 EFPD beyond the licensed end of cycle burnup will not i
require any changes to the Technical Specifications or involve an unreviewed safety question.
It should be noted that Vepco has obtained considerabic experience with this mode of operation at both the Surry and North Anna Power Stations.
The safety evaluation has been reviewed by both the System and Station Nuclear Safety and Operating Committees.
It has been determined that no unreviewed safety questions, as defined in 10 CFR 50.59, will be created by the extended power coastdown mode of operation.
This letter is provided for your information.
However, should you have any questions, please contact us at your o.arliest convenience.
Very truly yours,
. R.
ylvia, Fbnager Nuclear Operations & Maintenance cc:
Mr. James P. O'Reilly, Director Office of Inspection and Enforcement Region II 0 012150 C>tME
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