ML20199A492

Forwards RAI Which Addresses Thermal Design Criteria of Fuel Assemblies to Be Stored in North Anna ISFSI & Concrete Pad Static Analysis

ML20199A492
Person / Time
Site:	North Anna
Issue date:	01/16/1998
From:	James Shea NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
To:	Ohanlon J VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
References
TAC-L22113, NUDOCS 9801270230
Download: ML20199A492 (5)

Text

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January 16, 1998

, NIr. James P. O'Hanlon Senior Vice President Nucleer Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION (RAI) CONCERNING THE APPLICATION FOR THE NORTH ANNA INDEPENDENT SPENT FUEL STORAGE INSTALLATION (TAC NO. L22113)

I Deat Mr. O'Hanlon:

By letter dated May 9,1995, you submitted an application to the Nuclear Regulatory I Commission in accordance with 10 CFR Part 72 for the review and approval of a site-specific j license for an independent spent fuel storage installation (ISFSI) at the North Anna Nuclear Power Station site.

The staff has determined that additional information is required to determine compliance with 10 CFR Part 72. The attached RAI addresses the thermal design criteria of the fuel assemblies to be stored in the North Anna ISFSI and the concrete pad static analysis. You should note that I

as the staff review continues, it is likely that additional information will be needed to complete the review.

You are requested to respond in a time frame that is consistent with your proposed licensing l and loading schedule and yet which allows the staff ample time to complete its review. Please l reference the Docket No. and the abc' e TAC No. In future correspondence related to this request.

If you have any comment or question concerning this request, please contact me at 301 415 1428.

T I

Sincerely, '

l

[ original signed by /s/]

Joseph W. Shea, Project Manager '

Spent Fuel Licensing Section (I  ;

9801270230 990116 Spent Fuol Project Office  !

PDR ADOCK 05000338 Office of Nuclear Mawrial Safety y PDR and Safeguards Dockets 7216 (50 338/339) h{ g

Enclosure:

Request for AdditionalInformation cc: Service List ll l l ll ll ll ll Distribution: (Control No. 010S)

Dockets NRC File Center PUBLIC NMSS r/f SFPO r/f SFLS r/l CHaughney SShankman SWhaley WReamer, OGC ii NKalyanam, NRR WGloersen, Ril EMcAlpine, Ril --

OFC SFPOh E SFPO E SFPO .

E SFPO /E s NAME IS h VTharpe FSturz b uh ems &

DATE Oil /98 01/ 198 01//4 /9 0 11 / [

C = COVER E = COVER & ENCLOSURE N = NO COPY 01/16/98 :dd OFFICIAL RECORD COPY G:\ NORTH _AN\l22113.RA5

REQUEST FOR ADDITIONAL INFORMATION This document, titled Request for Additional information (RAl), contains a compilation of additional information requirements, identified to-date by the U.S. Nuclear Regulatory Commission staff, during its review of the applicant's application and Safety Analysis Report

- (SAR). This RAI follows the same format of tne applicant's SAR.

Each individual RAI describes information needed by the staff for it to complete its review of the application and/or the SAR and to determine whether the applicant has demonstrated compliance with the regulatory requirements. Where an individual RAI relates to the applicant's apparent failure to meet one or more regulatory requirements, or where an RAI specifically focuses on compliance issues associated with one or more specific regulatory requirements (e g., specific design criteria or accident conditions), such requirements will be specified in the individual RAl.

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I ENCLOSURE l l A

RE: Fuel Assemblies to Be Stored in the North Anna Independent Spent Fuel Storage Installation (ISFSI)

The following regulatory requirements are applicable: 10 CFR 72.26,72.44, and 72.212. It should be noted that other regulatory requirements may be applicable to this section.

1.0 Insolation Design Criteria 1.1 Background i Sectica 2.3.2.1 of the North Anna ISFSI Safety Analysis Report (SAR) states that the insolation data from Regulatory Guide 7.8 is 800 g cal /cm' per day for a horizontally transported cask and that the Regulatory Guide defines the design insolation as 400 g cal /cm' per day for stationary and vertically stored casks. Regulatory Guide 7.8 uses the insolation data given in 10 CFR 71.71(c)(1) which is not as stated in the North Anna ISFSI SAR.

Section 2.3.2.1 and Table 3.41 of the North Anna ISFSI SAR state that 800 g cal /cm' will be used as the design criterion for the storage casks. The North Anna ISFSI SAR uses the TN 32 as its design basis storage cask. However, the maximum solar heat load used in the TN 32 TSAR is 2950 BTU /ft' (800 g-cal /cm') for flat surfaces and 1474 BTU /ft2 (400 g cal /cm') for curved surfaces. The TN 32 cask was not analyzed for 800 g-cal /cm' on the curved surfaces, as might be inferred from Section 2.3.2.1 and Table 3.41. Therefore, it does not appear to meet the design criterion specified in the North Anna ISFSI SAR.

1.2 Request Clarify the insolation design criterion used for the North Anna Spent Fuel Storage Cask and justify any deviation from the TN 32 TSAR design criterion. If the North Anna design criterion are different from the TN 32 TSAR design criterion, demonstrate that the TN 32 meets the North Ann design criterion.

2.0 Maximum Decay Heat Design Criteria

2.1 Background

Table 3/41 of the North Anna Technical Specifications lists a decay heat of 0.843 kw/ assembly whereas Table 3.1 1 of the North Anna ISFSI SAR, states that the maximum decay heat is specified in the storage cask TSAR. Virginia Power proposes to use the TN 32 as its storage cask at the North Anna ISFSI.

The maximum decay heat listed in the TN 32 TSAR is 0.847 kw/ assembly, therefore, there is a discrepancy between these two tables.

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2.2 Request Change the North Anna ISFSI SAR and/or the Technical Specifications so that both give the same decay heat value.

3.0 Concrete Pad Static Analysis

3.1 Background

T Section 4.2.1.1 (static analysis) of the North Anna ISFSI SAR discusses the concrete storage pad design.

3.2 Request Provide the calculation packages of the static analysis to demonstrate that the cask i storage pad and areas have been designed to adequately support the static load of the i stored casks.

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,o Mr. J. P. O'Hanlon North Anna Power Station Virginia Electric & Power Company Units 1 and 2 cc:

Mr. William C. Porter, Jr. Robert B. Strobe, M.D., M.P.H.

County Administrator State Health Commissioner Louisa County Office of the Commissioner >

P.O. Box 160 Virginia Department of Health Louisa, Virginia 23093 P.O. Box 2448 Richmond, Virginia 23218 MichaelW. Maupin, Esquire Hunton and Williams Regional Administrator, Region 11 Riverfront Plaza, East Tower U.S. Nuclear Regulatoc, Commission 951 E. Byrd Street Atlanta Federal Center Richmond, Virginia 23219 61 Forsyth St., SW, Suite 23T85 Atlanta, Georgia 30303 3415 Dr. W. T. Lough Virginia State Corporation Mr. W. R. Matthews, Manager Commission i North Anna Power Station Division of Energy Regulation P. O. Box 402 P. O. Box 1197 Mineral, Virginia 23117 Richmond, Virginia 23209 Mr. Al Belisle Old Dominion Electric Cooperative U.S. Nuclear Regulatory Commission 4201 Dominion Blvd. Atlanta Federal Center Glen Allen, Virginia 23060 61 Forsyth St., SW, Suite 23T85 Atlanta, Georgia 30303 3415

Mr. James H. McCarthy, Manager l Nuclear Licensing & Operations Mr. David Christian, Manager Support Surry Power Station Virginia Electric and Power Company Virginia Electric and Power Company Innsbrook Technical Center 5570 Hog Island Road 5000 Domin;on Blvd.

Surry, Virginia 23883 Glen Allen, Virginia 23060 Office of the Attorney General Commonwealth of Virginia 900 East Main Street Richmond, Virginia 23219 Senior Resident inspector North Anna Power Station U.S. Nuclear Regulatory Commission 1024 Haley Drive Mineral, Virginia 23117

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