ML19340A118

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Forwards Proposed Tech Spec 4.1,5.4.1.4 & 5.4.3 Re Dry Storage of New Fuel Assemblies in Fuel Storage Racks Located in Unit 3 Spent Fuel Pool.Criticality Evaluation Encl
ML19340A118
Person / Time
Site: Oconee  Duke Energy icon.png
Issue date: 04/16/1976
From: Parker W
DUKE POWER CO.
To: Purple R, Rusche B
Office of Nuclear Reactor Regulation
Shared Package
ML19340A120 List:
References
NUDOCS 7911250040
Download: ML19340A118 (4)


Text

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[ICOG Mr. Benard C.'Rusche S S APO S3 b*

Director of Nuclear Reactor Regulation -

U. S. Nuclear Regulatory Commission C,

Attention: Mr. R. A.. Purple, Chief g g Operating Reactors Branch No. 1 Re: Oconee Nuclear Station Docket Nos. 50-269, -270, -287

Dear Sir:

In accordance with Section 50.90 of 10 CFR 50, Duke Power Company hereby requests a change in the Oconee Nuclear Station Technical Specifications.

The proposed change relates to the dry storage of new fuel assemblies in fuel storage racks located in Unit 3 spent fuel pool.

At present, the Units 1 - 2 spent fuel pool contains two batches of spent fuel assemblies and one batch of new fuel assemblies. With this inventory of fuel assemblies, the Units 1 - 2 spent fuel pool is not capable of receiving a full core discharge of fuel assemblies from either Unit 1 or Unit 2 reactors. Therefore, to facilitate the possible unloading of either the Unit 1 core or the~ Unit 2 core, the new fuel assemblies stored in the Units;1 - 2 spent fuel pool are.to be relocated. At present, four modules of the new fuel storage rack design have been installed in. the Unit 3 spent fuel pool and are capable of storing the new fuel assemblies. .However, it is important.that the new fuel assemblies be stored dry in the Unit 3 spent fuel pool'at this time to enable the installation of the remaining rack modules.

The "Oconee Nuclear Station Unit 3 Spent Fuel Storage Facility Modification Safety Analysis Report" . submitted.to you with my letter of September 12, 1975, and subsequently revised with my letter of November 12, 1975, included detailed descriptioniof the design of the new fuel storage. rack, structural'and seismic

' analysis, criticality analysis, and the safety analysis of the utilization of these racks to store new and spent fuel assemblies. The NRC approval for the utilization-of these. racks to store new and spent' fuel assemblies was granted by:your letter of, December 22, 1975. Although six rack modules remain to be 4051

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Mr. Benard C. Ruccha April 16, :1976 .

Page 2- .

' installed, the structural and seismic,.the criticality, and the-safety

analyses, described in the aforementioned safety analysis report, continue to be valid for the utilization of the racks in the present arrangement.

Additional detailed criticality analysis has been performed to support the dry storage of .new fuel assemblies; in the Unit 3 spent fuel pool. This criticality. analysis -has been performed by Combustion Engineering, Incorporated, supplier of the Unit 3 fuel storage racks. This analysis.shows that an adequate degree of suberiticality will be maintained during all credible storage conditions.. Attachment 1 1s'a summary of the criticality analysis including the assumptions employed.

Attachment 2 contains replacement pages 4.1-10, 5.4-1, and 5.4-la of-the Oconee. Nuclear Station Technical Specifications with the-proposed changes identified.by~ vertical lines.

We request that approval of the-Technical Specifications change be granted as expeditiously as possible and no later than June 1, 1976. +

Forty copies of this request, including three signed originals, are enclosed.

Very truly yours, s/ William O. Parker, Jr.

William O. Parker, Jr.

PMA:mmb Attachments.

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Mr. Benard C. Ruscha -

April 16,11976~ .

Page 3 .

WILLIAM 0. PARKER, JR., being duly sworn, states that he is Vice President of Duke Power Company; that he is authorized on the part of said Company to sign and file with the Nuclear Regulatory Commission this request for amendment of the Oconee Nuclear ' Station Technical Specifications, Appendix A to Facility Operating Licenses DPR-38, DPR-47 and DPR-55; and that all statements and matters set'forth therein are true and correct to the best of his knowledge, s/ William O. Parker, Jr.

William O. Parker, Jr. , Vice President ATTEST:

s/ John C. Goodman, Jr.

John C. Goodman, Jr.

Assistant Secretary-(Seal)-

Subscribed and sworn to before me this 16th day of April 1976.

s/Edna B. Farmer Notary Public (Notarial Seal)

My-Commission Expires:

October- 24, 1977 l

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