ML18139A605: Difference between revisions

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I",_' e Vepco Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation Attn: Mr. Steven A. Varga, Chief Operating Reactors Branch J:il'o. 1 Division of Licensing U. S. Nuclear Regulatory Co:inmission Washington, DC 20555  
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* Vepco                                                 VIRGINIA ELECTRIC AND POWER COMPANY July 28, 1980 Mr. Harold R. Denton, Director                                 Serial J:il'o.: 664 Office of Nuclear Reactor Regulation                         . FR/RWC: mvc Attn: Mr. Steven A. Varga, Chief Operating Reactors Branch J:il'o. 1 Division of Licensing                                 Docket No.:        50-281 U. S. Nuclear Regulatory Co:inmission Washington, DC 20555                                         License J:il'o.:    DPR-37


==Dear Mr. Denton:==
==Dear Mr. Denton:==
* VIRGINIA ELECTRIC AND POWER COMPANY July 28, 1980 Serial J:il'o.: 664 . FR/RWC: mvc Docket No.: 50-281 License J:il'o.: DPR-37 SUPPLEMENTAL INFORMATION CONCERNING OUR ASSESSMENT'OF'NUREG..::0630' In.our letter from Mr. C. M. Stallings to Mr. D. _G. Eisenhut, Serial No. 039, dated January 11, 1980, we committed to continuing our ment of the fuel rod modeling concerns raised in NUREG-0630.
 
We have _ recently received formal documentation of the Westinghouse evaluation of this concern for Surry Unit 2. The Surry Unit 2 evaluation; using techniques discussed with members of the NRC staff on December 20, 1979, indicates that a total peaking factor, Fq, penalty of 0.007 remains after application of the approved.benefits.
SUPPLEMENTAL INFORMATION CONCERNING OUR ASSESSMENT'OF'NUREG..::0630' In.our letter from Mr. C. M. Stallings to Mr. D. _G. Eisenhut, Serial No. 039, dated January 11, 1980, we committed to continuing our assess-ment of the fuel rod modeling concerns raised in NUREG-0630. We have                 _
Application of this impact to our current Surry Unit 2 Technical tions total peaking factor (Fq) value of 2.19 (reference the letter from Mr. A. Schwencer (NRC) to Mr. *J. _H. Ferguson (Vepco), dated May 16, 1980) would result in a minor reduction to 2.183. In light of this very minor impact and during our continuing assessment of*_ the applicability of the data and modeling techniques being proposed in NUREG...:0630, .we will administratively restrict the total peaking factor for Surry Unit 2 to*2.18. Upon resolution of the NUREG-0630 concerns, we will address the need for any final changes to the Technical Specifications.
recently received formal documentation of the Westinghouse evaluation of this concern for Surry Unit 2.
This approach has been discussed and concurred with by members of your staff and our System and Station Nuclear Safety and Operating Committees.
The Surry Unit 2 evaluation; using techniques discussed with members of the NRC staff on December 20, 1979, indicates that a total peaking factor, Fq, penalty of 0.007 remains after application of the approved.benefits.
Application of this impact to our current Surry Unit 2 Technical Specifica-tions total peaking factor (Fq) value of 2.19 (reference the letter from Mr. A. Schwencer (NRC) to Mr. *J. _H. Ferguson (Vepco), dated May 16, 1980) would result in a minor reduction to 2.183. In light of this very minor impact and during our continuing assessment of*_ the applicability of the data and modeling techniques being proposed in NUREG...:0630, .we will administratively restrict the total peaking factor for Surry Unit 2 to*2.18. Upon resolution of the NUREG-0630 concerns, we will address the need for any final changes to the Technical Specifications. This approach has been discussed and concurred with by members of your staff and our System and Station Nuclear Safety and Operating Committees.
Should you have.questions, please contact our Mr. R. W. Cross at (804)-771-3691.
Should you have.questions, please contact our Mr. R. W. Cross at (804)-771-3691.
cc: Mr. James P. O'Reilly, Director Office of Inspection and Enforcement Region II Very truly yours, .B. R. Sylvia, Manager Nuclear Operations and Maintenance foool s 1/0}}
Very truly yours,
                                                                          ~
                                                                        .B. R. Sylvia, Manager Nuclear Operations and Maintenance cc: Mr. James P. O'Reilly, Director foool Office of Inspection and Enforcement s
Region II 1/0}}

Latest revision as of 03:27, 21 October 2019

Provides Supplemental Info Re Assessment of NUREG-0630,per 800111 Commitment.Need for Final Changes to Tech Specs Will Be Addressed Upon Resolution of NUREG-0630 Concerns
ML18139A605
Person / Time
Site: Surry Dominion icon.png
Issue date: 07/28/1980
From: Sylvia B
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To: Harold Denton, Varga S
Office of Nuclear Reactor Regulation
References
RTR-NUREG-0630, RTR-NUREG-630 664, NUDOCS 8007310390
Download: ML18139A605 (1)
v • d • e


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  • Vepco VIRGINIA ELECTRIC AND POWER COMPANY July 28, 1980 Mr. Harold R. Denton, Director Serial J:il'o.: 664 Office of Nuclear Reactor Regulation . FR/RWC: mvc Attn: Mr. Steven A. Varga, Chief Operating Reactors Branch J:il'o. 1 Division of Licensing Docket No.: 50-281 U. S. Nuclear Regulatory Co:inmission Washington, DC 20555 License J:il'o.: DPR-37

Dear Mr. Denton:

SUPPLEMENTAL INFORMATION CONCERNING OUR ASSESSMENT'OF'NUREG..::0630' In.our letter from Mr. C. M. Stallings to Mr. D. _G. Eisenhut, Serial No. 039, dated January 11, 1980, we committed to continuing our assess-ment of the fuel rod modeling concerns raised in NUREG-0630. We have _

recently received formal documentation of the Westinghouse evaluation of this concern for Surry Unit 2.

The Surry Unit 2 evaluation; using techniques discussed with members of the NRC staff on December 20, 1979, indicates that a total peaking factor, Fq, penalty of 0.007 remains after application of the approved.benefits.

Application of this impact to our current Surry Unit 2 Technical Specifica-tions total peaking factor (Fq) value of 2.19 (reference the letter from Mr. A. Schwencer (NRC) to Mr. *J. _H. Ferguson (Vepco), dated May 16, 1980) would result in a minor reduction to 2.183. In light of this very minor impact and during our continuing assessment of*_ the applicability of the data and modeling techniques being proposed in NUREG...:0630, .we will administratively restrict the total peaking factor for Surry Unit 2 to*2.18. Upon resolution of the NUREG-0630 concerns, we will address the need for any final changes to the Technical Specifications. This approach has been discussed and concurred with by members of your staff and our System and Station Nuclear Safety and Operating Committees.

Should you have.questions, please contact our Mr. R. W. Cross at (804)-771-3691.

Very truly yours,

~

.B. R. Sylvia, Manager Nuclear Operations and Maintenance cc: Mr. James P. O'Reilly, Director foool Office of Inspection and Enforcement s

Region II 1/0

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