ML20058N153

Forwards Request for Addl Info Re Simplified BWR Design, Specifically Neutronic Info (Q440.1-Q440.5).Response Requested within 60 Days of Ltr Date

ML20058N153
Person / Time
Site:	05200004
Issue date:	08/26/1993
From:	Malloy M Office of Nuclear Reactor Regulation
To:	Marriott P GENERAL ELECTRIC CO.
References
NUDOCS 9310080135
Download: ML20058N153 (4)

Text

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. j* e afcoq o 0, .,k UNITED STATES ij NUCLEAR REGULATORY COMMISSION

. [g.ih, z !g[ ~,' f WASHINGTON, D.C. 20555-0001

• August 26, 1993 Docket No.52-004 Mr. Patrick W. Marriott, Manager Licensing & Consulting Services GE Nuclear Energy 175 Curtner Avenue San Jose, California 95125 ,

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION (RAI) REGARDING THE SIMPLIFIED BOILING WATER REACTOR (SBWR) DESIGN The staff has determined that it needs additional information to support its reactor systems review activities related to the SBWR design certificat. ion.

Some additional SBWR neutronics information is needed (Q440.1-Q440.5).

Please respond to the enclosed questions within 60 days of the date of this letter.

You have previously requested that portions of the information submitted in the August 1992, application for design certification of the SBWR plant, as supplemented in February 1993, be exempt from mandatory public disclosure.

The staff has not completed its review of your request in accordance with the requirements of 10 CFR 2.790; therefore, that portion of the submitted 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 you are seeking exemption. However, the staff will withhold this letter from public disclosure for 30 calendar days from the date of this letter to allow GE Nuclear Energy the opportunity to ,

verify the staff's conclusions. If, after that time, you do not request that all or portions of the information in the enclosure be withheld from public disclosure in accordance with 10 CFR 2.790, this letter will be placed in the NRC's Public Document Room.

This request for additional information affects nine or fewer respondents, and ,

therefore, is not subject to review by the Office of Management and Budget under P.L.96-511.

• The numbers in parentheses designate the tracking numbers assigned to the questions.

070058 - BBC RE MTB COPY 9310080135 930826 O 4

PDR ADOCK 05200004 PDR H

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Mr. Patrick W. Marriott August 26, 1993 If you have any questions regarding this matter, please contact me at (301) 504-1178 or Mr. Son Ninh at (301) 925-1125.

Sincerely, (Original signed by)

Melinda Malloy, Project Manager Standardization Project Directorate Associate Directorate for Advanced Reactors and License Renewal Office of Nuclear Reactor Regulation

Enclosure:

RAI on the SBWR Design cc w/ enclosure:

See next page Distribution (w/ enclosure):

• Central File PDST R/F PShea

• PDR MMalloy SNinh DMcPherson, 8E2 RElliott, 8H2 GThomas, 8E21 MFinkelstein, 15B18 ATGody, Jr.,17G21 Distribution (w/o enclosure):

DCrutchfield/WTravers RBorchardt JNWilson TMurley/FMiraglia,12G18 WRussell,12G18 AThadani/MVirgilio, 8E2 RJones, 8E21 BSheron/TKing, NL5007 JMoore, 15B18 ACRS (11) GSub (2), 12E4

• To be held for 30 days

-(

OFC LA:PDST _ d PM:PDST Pl#PDST SdrPDI'h NAME PShe_a , NMalloy$ Skd$ JNWil's#bn DATE 08b3 08/)T93 OEIMg/93 08/N/93 DOCUMENT NAME: SBWR9318.MM

d Mr. Patrick W. Marriott Docket No.52-004 General Electric Company cc: Mr. Laurence S. Gifford ,

GE Nuclear Energy 12300 Twinbrook Parkway Suite 315 Rockville, Maryland 20852 ,

Director, Criteria & Standards Division Office of Radiation Programs U.S. Environmental Protection Agency 401 M Street, S.W.

Washington, D.C. 20460 Mr. Sterling Franks U.S. Department of Energy '

NE-42 Washington, D.C. 20585 Mr. Jeffrey C. Baechler GE Nuclear Energy 175 Curtner Avenue, MC-782 San Jose, California 95125 Mr. Frank A. Ross Program Manager, ALWR Office of LWR Safety & Technology U.S. Department of Energy .

NE-42 19901 Germantown Road Germantown, Maryland 20874 Mr. Richard Schultz  !

Idaho National Engineering Laboratory 1 P.O. Box 1625 Mailstop 3895 I Idaho Falls, Idaho 83415-3895 Mr. G. Slovik Brookhaven National Laboratories Building 475B Upton, New York 11973 l

. i REQUEST FOR ADDITIONAL INFORMATION (RAI) ON THE SIMPLIFIED BOILING WATER REACTOR (SBWR) DESIGN Reactor Systems In a letter (reference SBWR Letter No. GENRC-03) dated May 21, 1993, GE Nuclear Energy (GE) transmitted a tape of SBWR neutronics data for use in the staff's work on RAMONA-48. The following information was missing from the transmitted tape and is needed for the staff's reviews to continue.

440.1 Describe where the four fuel lattice types in GE's May 21, 1993, letter are loaded axially into each bundle type in the core (i.e., -

axial fuel loading map).

440.2 Provide the location of each bundle type in the core (i.e., radial fuel loading map). >

440.3 Provide the 3-D Exposure (Ex) and Void History (VH) distributions at beginning of life, middle of life, and end of life for the equilib-rium core. If these cross sections are not for the equilibrium core, provide a discussion of their origin and purpose.

440.4 Provide another set of cross sections for the moderator at another temperature to establish its effect on the nuclear parameters.

440.5 For each lattice type, provide the variation in relative power required to determine the effect of xenon on the nuclear parameters.

l Enclosure I

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