ML17054A114

Forwards Request for Addl Info Re Criticality Analysis Supporting Requested Spent Fuel Pool Expansion.Request Formally Documents 830823 Telex Request.Response Must Be Submitted in Time to Complete NRC Review by 830930

ML17054A114
Person / Time
Site:	Nine Mile Point
Issue date:	09/08/1983
From:	Vassallo D Office of Nuclear Reactor Regulation
To:	Rhode G NIAGARA MOHAWK POWER CORP.
References
NUDOCS 8309270585
Download: ML17054A114 (6)

Text

Docket No. 50-220 11r.

G. K. Rhode Senior Vice Presfdent Niagara Mohawk Power Corporation 300 Erie Boulevard Hest

Syracuse, New York 13202

-0 September 8,

1983 DISTRIBUTION:

Docket File NRC PDR Local PDR L. Kopp D. Eisenhut OELD E. Jordan R. Hermann S. Norris NSIC J. Taylor ACRS (10)

ORB¹2 Reading VE

/t

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION ON CRITICALITY ANALYSIS SUPPORTING YOUR REQUESTED SPENT FUEL POOL EXPANSION RE:

Nine hifle Point Nuclear Station, Unft No.

1 Reference fs made to your submittal dated June 24, 1983, which provided information on the crftfcalfty analysis supporting your application for amendment to expand your spent fuel storage capacity.

The fnformatfon was reviewed by our staff, and we ffnd that the items identified fn the enclosure are required to complete our review.

This request for information formally documents our request by telex of August 23, 1983.

In order to support our goal for completion of this revfew by September 30, 1983, please provide your formal response as qufckly as possible.

The reporting and/or recordkeeping requirements contained fn this letter affect fewer than ten respondents; therefore, OMB clearance fs not required under P.L.96-511.

Sincerely.

8309270585 830908 PDR ADOCK 05000220 P

PDR

Enclosure:

As stated cc w/enclosure See next page Original signed by/

Domenfc B. Vassallo, Chief Operating Reactors Branch ¹2 Dfvfsfon of I.fcensfng OFFICE/

SURNAME/

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ORB¹2:DL RHermann 9/ 5/93

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NRC FORM 3'IS IIO/80)NRCM0240 OFFICIAL RECORD COPY

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Mr. G. K. Rhode Niagaca Mohawk power Corporation Nine Mile point Nuclear Station, Unit No.

1 CC:

Troy B. Conner, Jr.,

Esq.

Conner

& Wetterhahn Suite 1050 1747 Pennsylvania

Avenue, N.

W.

Washington, D. C.

20006 Mr. Robert P. Jones, Supervisor Town of Scriba R.

D. g4

Oswego, New York 13126 Niagara Mohawk power Corporation ATTN:

Mr. Thomas perkins plant Superintendent Nine Mile point Nuclear Station Post Office Box 32

Lycoming, New York 13093 Thomas A. Murley Regional Administrator Region I Office U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406.

Mr. Jay Dunkleberger Division of policy Analysis and planning New York State Energy Office Agency Building 2, Empire State Plaza

Albany, New York 12223 U. S. Environmental Protection Agency Region II Office Regional Radiation Representative 26 Federal Plaza New York,.New York 10007 Resident Inspector U. S.

Nuclear Regulatory Commission Post Office Box 126

Lycoming, New York 13093 John W. Keib, Esquire Niagara Mohawk Power Corporation 300 Erie Boulevard West

Syracuse, New York 13202

1 4~

ENCLOSURE QUESTIONS ON NINE MILE POINT SPENT FUEL STORAGE CORE PERFORMANCE BRANCH 1.

It appears that only the eight poison high density racks (1710 spaces) in the south half of the pool have been analyzed for a maximum enrich-ment of 3.75 weight percent U-235.

Therefore, the reference to 18.13 grams of U-235 per axial centimeter in Technical Specification 5.5 should apply only to these 1710 poison high density spaces.

Unless reanalyzed for the higher enrichment, the maximum loading in the 1066 flux trap storage spaces should remain at 15.6 grams of U-235 per axial centimeter.

2.

Since 3.75 weight percent U-235 is higher than any present fuel assembly design, how was the calculational bias which corrects for the explicit multi-enrichment pin distribution derived?

1 0

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