ML20212D006

Suppls 860320 Application for Amends to Licenses NPF-9 & NPF-17,permitting Use of multi-element TN-8 & TN-8L Spent Fuel Casks for Receipt of Irradiated Fuel.Info Re Environ Impacts Per 10CFR51.52 Encl

ML20212D006
Person / Time
Site:	McGuire, Mcguire
Issue date:	08/05/1986
From:	Tucker H DUKE POWER CO.
To:	Harold Denton, Youngblood B Office of Nuclear Reactor Regulation
References
TAC-61099, TAC-61100, TAC-61775, TAC-61776, NUDOCS 8608120283
Download: ML20212D006 (4)

Text

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3 DUKE POWER GOMPANY P.O. BOX 33180 CHARLOTTE, N.C. 28242 HAL B. TUCKER TELEPHONE

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August 5, 1986 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Conunission 9'

Washington, D.C.

20555 i

ATTENTION:

B.J. Youngblood, Director PUR Project Directorate #4 II '

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Subject:

McGuire Nuclear Station Docket Nos. 50-369 and 50-370 TN-8, TN-8L Multielement Spent Fuel Casks License Amendments - Supplement

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Daar Mr. Denton.

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My letter of March 20,1986 (as supplemented by my letters dated May 23, and July 10, 1986) submitted proposed license amendments (pursuant to 10 CFR 50.90) to Facility Operating Licenses NPF-9 and NPF-17 for McGuire Nuclear Station Units 1 i

cnd.2, respectively. The proposed amendments seek to permit use of the multielement TN-8 (and TN-8L) spent fuel casks for receipt of irradiated Oconee j

fual in addition to the previously authorized NFS-4 (NAC-1) and NLI-1/2 single 3

fusl assembly casks. The " Notice of Consideration of Issuance of Amendment to Facility Operating License and proposed No Significant Hazards Consideration J

Datermination and Opportunity for Hearing" related to the submittal was published in the Federal Register on May 29, 1986.

Tha above rc.arenced July 10, 1986 letter submitted certain additional information requested by the NRC with respect to the environmental assessment being prepared for these amendments. However, as a result of subsequent discussions between Duke Power Company and members of your staff regarding the environmental impacts of the proposed change, further information was requested for the assessment. This raquasted information addressing 10CFR 51.52 is provided in Attachment 1.

Sinca this letter contains information supplementing that provided in my March 20, 1

1986 submittal which is currently under review and is bounded by the contents of that submittal, the previous amendments, justification and safety analyses, and

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significant hazards considerations remain valid, and no additional amendment fees j

cra necessary.

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Mr. H:rold R. D;nten, Dirsctor August 5, 1986 Page 2 Duke Power Company requests that this matter receive immediate attention and the proposed amendments issued as soon as possible for the reasons outlined in previous correspondence / discussions. Training and dry run operations with the TN-8L cask were scheduled to begin at McGuire on August 4, 1986, with shipments to btgin the week of August 18, 1986. Should there be any questions or if further information is required, please advise.

Vsry truly yours, Hal B. Tucker i

PBN/22/j gm Attachment xc:

Dr. J. Nelson Grace Regional Administrator U.S. Nuclear Regulatory Commission 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Mr. Dayne Brown, Chief Radiation Protection Branch Division of Facility Services Department of Human Resources P.O. Box 12200 Raleigh, N.C.

27605 Mr. Darl Hood, Project Manager Division of Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C.

20555 i

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Mr. W.T. Orders Senior Resident Inspector McGuire Nuclear Station i

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ATTACHMENT 1 DUKE POWER COMPANY McGUIRE NUCLEAR STATION SUPPLEMENTAL INFORMATION FOR ENVIRONMENTAL ASSESSMENT TRANSPORTATION OF OCONEE SPENT FUEL '20 McGUIRE VIA TN-8/8L CASKS Riqu7st:

Address 10CFR 51.52 with regard to plans for shipping spent fuel from Oconee to McGuire with the TN-8/TN-8L shipping casks.

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1 Th3 anvironmental impact results contained in Table S-4 of 10CFR 51.52 make j l csveral assumptions on fuel assembly characteristics, traffic and population 1 4 !

d:naities. As discussed below, each of these assumptions is applicable to the M

prcpesed shipments of spent fuel from Oconee to McGuire. Consequently, all of the

~g j) canditions in paragraph (a) of Section 51.52 are met.

m Table S-4 assumes LWR with limited thermal power of 3800 Mega-

~l Recctor type watts. Oconee and McGuire are both LWR Nuclear Stations with

- l unit thermal power ratings of 2568 and 3411 Messwatts respec-tively.

Fuel type Table S-4 asstanes Zr-4 clad UO2 at enrichments below 4%.

l Oconee fuel is UO2 with Zr-4 cladding. Maximum initial en-richment of fuel that would be shipped from Oconae is 3.20%.

Fusi history

- Table S-4 assumes fuel burnup levels below 33,000 MWD /MIU and I

a minimum cooling time of 90 days. Oconee's candidate fuel assemblies will have average burnup levels less than 33,000 MWD /MTU. Minimum cooling time is espected to be 5 years, but in no instance will it be less than the 270 day minimum speci-fied in McGuire's operating license.

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i Transpcre Mode - Table S-4 assumes that shipments of irradiated fuel utilize truck, rail or barge transport modes. All shipments from Oconee to McGuire will be by truck.

Hast loads Table S-4 asstunes a maximum of 250,000 Btu /hr heat load per cask during shipment. Due to the extended cooling time for the candidate fuel assemblies this limit will never be ex-ceeded.

For 5-year cooled fuel the heat content will be less than one KW or 3,400 Beu/hr; or 10,200 Btu /hr per TN-8/TN-8L cask.

Waight limits As mentioned in Table S-4, weight limitations will be govern-ed by State and Federal regulations which will be observed by Duka Power Company.

Fr qu ncy of Shipments with the TN-8/TN-8L cask will be scheduled at the Shipm:nts rate of one per week. The Table S-4 limits of 1 truck ship-ment per day and 3 rail shipments per month will not be ex-caeded.

Doses to Transportation DOT regulations limit exposure in occupied areas of the Workers transport vehicle to a maximum of 2 mr/hr.

Assuming 2 per-sons in the transport vehicle, 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> per Oconee to McGuire

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shipment, 52 stdpments per year, and 2 mr/hr, the yearly cu-mulative dose to transportation workers would not exceed.728 man-rem.

Historical data indicates that actual dose rates will be much less than 2 mr/hr.

Doses to Table S-4 assumes that for each shipment,10 onlookers are Onlookers exposed for 3 minutes at a distance of 3 feet from the cask.

For Oconee to McGuire shipments, there are no planned stops during the 3 travel time and, consequently, no onlookers are expected to be exposed to radiological doses.

Doses to Public Along Route

- The approved shipping route between Oconee and McGuire is 172 miles in length. Population density along this route is conservatively estimated at 719 persons per square mile.

(This is based upon 1980 census data.) If a one mile wide corridor is examined, the total population.is 123,668 which is less than the Table S-4 value of 600,000 by a factor of 4.8.

Cumulative yearly dose to this population will not exceed the 3 man-rem limit specified in Table S-4 since that figure was based on a dose rate 6 feet from the cask equal to the legal limit.

Accidents in Transport

- The risks specified in Table S-4 were based on 155,000 vehicle miles per year. The subject shipments will result in only 8,944 miles per year by which the accident rate would be lower by a factor of 17.

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