ML20137S416

Revised Application for Amends to Licenses DPR-39 & DPR-48, Replacing Tech Spec Pages to Restrict New Fuel Vault Enrichment Limit to 3.7 W/O Spent Fuel Pool Limit

ML20137S416
Person / Time
Site:	Zion  File:ZionSolutions icon.png
Issue date:	11/21/1985
From:	Leblond P COMMONWEALTH EDISON CO.
To:	Harold Denton Office of Nuclear Reactor Regulation
Shared Package
ML20137S421	List: ML20137S416 ML20137S425
References
0924K, 924K, NUDOCS 8512060237
Download: ML20137S416 (2)

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Commonwealth Edison f One First Nabonal Plata. Cheago Ilhnois a 7 Address Reply to Post Othce Box 767 Chicago, Ilknois 60690 November 21, 1985 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission washington, DC 20555

Subject:

Zion Nuclear Power Station Units 1 and 2 Proposed Amendment to Facility Operating License Nos. DPR-39 and DPR-48 NRC Docket Nos. 50-295 and 50-304 References (a): July 12, 1985 letter from P. C. LeBlond to H. R. Denton.

(b): July 26, 1985 letter from P. C. LeBlond to H. R. Denton.

(c): August 2, 1985 letter from P. C. LeBlond to H. R. Denton.

Dear Mr. Denton:

Reference (a) transmitted a proposed amendment to Facility Operating License Nos. DPR-39 and OPR-48, Appendix A, Section 5.0 - Design Features.

This proposed change would raise the enrichment limits to approximately 3.7 w/o for the Spent Fuel Pool and 4.0 w/o for the New Fuel Vault. Reference (b) supplied the license pages that were affected by this proposed amendment.

Subsequent discussions with the NRC indicated that the difference between the 4.0 w/o allowable New Fuel Vault enrichment and the 3.7 w/o Spent Fuel Pool limit was in conflict with the staff's interpretation of the newly issued 10 CFR 53. Commonwealth Edison's rationale for requesting the higher New Fuel Vault limit was simply that the criticality analysis that was performed indicated that 4.0 w/o was acceptable. There is no intent to utilize 4.0 w/o fuel in the Zion units at this time. However, NRC approval of 4.0 w/o fuel for the New Fuel Vault would have facilitated a potential future upgrade to the 4.0 w/o enrichment level for the Spent Fuel Pool, h As a result of these discussions, Commonwealth Edison Company has i.

agreed to restrict the New Fuel Vault's enrichment limit to the 3.7 w/o Spent Fuel Pool limit. Accordingly, a revised set of the affected Technical Specification changes is included in the Attachment. Please use these pages i

to replace the corresponding pages transmitted with reference (a). The license'pages transmitted with reference (b) are not affected.

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• 9 H. R. Denton Noverrber 21, 1985 This revision has received on and off-site review and approval.

The criticality analysis transmitted by reference (a) and the demonstration of no significant hazards consideration transmitted by reference (c) both remain valid.

As provided by 10 CFR 50.91, the State of Illinois is being notified of this amendment request by a copy of this letter and the attachment.

If there are any further questions regarding this matter, please contact this office.

Three (3) signed originals and thirty-seven (37) copies of this transmittal and its attachments are hereby provided for your review.

Very truly yours, f

P. C. LeBlond Nuclear Licensing Administrator 1m cc: NRC Resident Inspector - Zion J. A. Norris - NRR L

M. C. Parker - State of Illinois Attachment i

SUBSC IBED AND Q to befo me th19 c3 I day of th(LIM /nt_ , 1985 U1 . AN) 4 Notary'Puu1l.c~ p~

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