ML20056F887

Requests Addl Info in Order to Complete Review of June 1992 Application for Design Certification of AP600

ML20056F887
Person / Time
Site:	05200003
Issue date:	07/28/1993
From:	Kenyon T Office of Nuclear Reactor Regulation
To:	Liparulo N WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
References
NUDOCS 9308310269
Download: ML20056F887 (4)

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NUCLEAR REGULATORY COMMISSION l

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July 28,1993

,4 Docket No.52-003 Mr. Nicholas J. Liparulo Nuclear Safety and Regulatory Activities Westinghouse Electric Corporation P.O. Box 355 Pittsburgh, Pennsylvania 15230

Dear Mr. Liparulo:

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SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION (RAI) ON THE AP600 l

l As a result of its review of the June 1992 application for design certifica-(

tion of the AP600, the staff has determined that it needs additional informa-tion in order to complete its review. The additional information is needed in the area of reactor systems (Q952.1).* Enclosed is the staff's question.

Please respond to this request within 90 days of the date of receipt of this l

1etter.

You have requested that portions of the information submitted in the June 1992, application for design certification be exempt from mandatory public disclosure. While the staff has not completed its review of your request in i

accordance with the requirements of 10 CFR 2.790, that portion of the submit-

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ted information is being withheld from public disclosure pending the staff's final determination. The staff concludes that this RAI does not contain those portions of the information for which exemption is sought. However, the staff will withhold this letter from public disclosure for 30 calendar days from the l

date of this letter to allow Westinghouse the opportunity to verify the staff's conclusions.

If, after that time, you do not request-that all or i

portions of the information in the enclosures be withheld from public disclo-l sure in accordance with 10 CFR 2.790, this letter will be placed in the l

Nuclear Regulatory Commission's Public Document Room.

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• The number in parentheses designate the tracking numbers assigned to i

the questions.

f RRC RLF CENTER CWY 9308310269 930728 PDR ADOCK 05200003

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Mr. Nicholas J. Liparulo July 28,1993 This RAI affects nine or fewer respondent s, and therefore, is not subject to review by the Office of Management and Budget under P.L.96-511.

If you have any questions regarding this matter, you can contact me at (301) 504-1120.

Sincerely, Originals?gned Be Thomas J. Kenyon, Project Manager Standardization Project Directorate Associate Director for Advanced Reactors and License Renewal Office of Nuclear Reactor Regulation 1

Enclosure:

As stated cc w/ enclosure:

See next page DISTRIBUTION:

• Central File PDST R/F TMurley/FMiraglia DCrutchfield

• PDR RBorchardt TEssig TKenyon RHasselberg TGody, Jr., EDO JMoore, 15B18 MSiemien, 15B18 PShea Alevin, 8E23 MRubin, 8E23 LShotkin, NLN 353 F0dar, NLN 353 RJones, 8E23 ACRS (11) w/o encl.

OFC:

LA:PDST:ADAR PM:PDSUADAR SRXBI/

(A)SC:PDST:ADAR NAME:

PShea %.S TKenMn:sg Rdb TEssig Id186 DATE:

07/4 8/93 07/t /93 07/td93 07/23/93 1

0FFICIAL RECORD COPY:

l DOCUMENT NAME: ODAR.RAI l

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r Mr. Nicholas J. Liparulo Westinghouse Electric Corporation Docket No.52-003 AP600 cc:

Mr. B. A. McIntyre Advanced Plant Safety & Licensing Westinghouse Electric Corporation Energy Systems Business Unit P.O. Box 355 Pittsburgh, Pennsylvania 15230 Mr. John C. Butler Advanced Plant Safety & Licensing Westinghouse Electric Corporation Energy Systems Business Unit Box 355 Pittsburgh, Pennsylvania 15230 Fr.

D. Beaumont h2: 1cie and Advanced Technology Division West 3nghouse Electric Corporation One Montrose Metro 11921 Rockville Pike Suite 350 Rockville, Maryland 20852 Mr. Sterling Franks U.S. Department of Energy NE-42 Washington, D.C.

20585 Mr. S. M. Modro EG&G Idaho Inc.

Post Office Box 1625 Idaho Falls, Idaho 83415 Mr. Steve Goldberg Budget Examiner 725 17th Street, N.W.

Room 8002 Washington, D.C.

20503 Mr. Frank A. Ross U.S. Department of Energy, NE-42 Office of LWR Safety and Technology 19901 Germantown Road Germantown, Maryland 20874 I

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REQUEST FOR ADDITIONAL INFORMATION ON THE WESTINGHOUSE AP600 DESIGN

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I 952.1 The staff, with the assistance of INEL, is developing an input deck for

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the AP600 plant design to support NRC audit calculations.

Provide the i

following information on the automatic depressurization system (ADS),

j the in-containment refueling water storage tank (IRWST), and the core i

makeup tank (CMT).

ADS piping diagrams from the pressurizer to the valves of the first i

a.

three stages, and downstream of the valves to the IRWST, l

b.

Piping diagrams of the IRWST discharge, i

c.

Pressure balance line piping diagrams from the cold leg to the CMT, and pressurizer to the CMT, and i

d.

Pressurizer spray lines piping diagrams.

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e Enclosure f

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