ML19319B202

Requests Addl Info Re Safety Analysis by 721127

ML19319B202
Person / Time
Site:	Oconee
Issue date:	11/06/1972
From:	Schwencer A US ATOMIC ENERGY COMMISSION (AEC)
To:	Thies A DUKE POWER CO.
References
NUDOCS 8001100678
Download: ML19319B202 (3)

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Desket Nos. 50-27 NM 6 5T2 and 50-287 Duke Power Company ATTE: Mr. Austia C. Thias Semier Vias Freefdent Producties and Tramanisaism 422 Seeth Church Street P. C. Bea 2178 Charlotte, Morth Carolina 2g201 l

Gentismen We find that we need additismal information to soglete our review of your applisatism for an operattag 14*==== for the Oeense Nuelaar Staties, Units 2 and 3.

The spesifia informaties required is described in the j

omaleeure.

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In order to malatain our liesseing revier schedule we will need a sempletely adequate reopease by November 27, 1972. Please inform as E,

within seven (7)-days after receipt of this letter of your confirmatism of the schedule er the date yes will be able to meet. If you sammet meet our spesified date er if your reply is met fully reopensive to our regnests it is highly lihaly that the everall==had=1a for esaplettag the lisensing reviar of this project will *nsve to be entended. Sinne reassignment of the staff's efforts will require sempletion of the new assigammet prior te returning to this projest, the antant of antaasian will unst likely be, greater them the extent of delay in your reopease.

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Please saataat as if you have any questians regarding the - 1===d requests.

7 Simcarely, Origin ISigned[

Abert Schweneer A. Sehsemaar, nimf Pressurised Water Reesters Bransk No. 4 Direeterate of Licensing Baalasure i

Request for Addittamal I'nformation r-e-- neens-a nnga 1

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. cc: William L.~~ Porter, Esquire Duka Power Company P. O. Box 2178 Charlotte. North Carolina 28201 l

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f 4-REQUEST FOR ADDITIONAL INFOR::ATION OCONEE NUCLEAR STATION, UNITS 2 AND 3 DOCKET NOS. 50-270 AND 50-287 14.0 SAFETY ANALYSIS 14.2 For spectrum of breaks, recompute peak cladding temperature using the CRF model in the REFLOOD code.

Include, in addition to usual information (T metal-water. reaction, etc.), the proceduresforcalculatAdlhversustime,afterbeginningof core recovery. Vary location of axial q max.

2 break 14.3 For small break analysis calculate the case for a 0.5ft 2 break.

using the same method as used for the 0.3ft b

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