ML20212C059

Informs That NRC Reviewed Licensee Justifications for Deviations from NEDO-31558 & Determined That Justifications acceptable.Post-accident Neutron Flux Monitoring Instrumentation Acceptable Alternative to Reg Guide 1.97

ML20212C059
Person / Time
Site:	LaSalle
Issue date:	09/17/1999
From:	Skay D NRC (Affiliation Not Assigned)
To:	Kingsley O COMMONWEALTH EDISON CO.
References
RTR-REGGD-01.097 GL-82-33, TAC-M77660, NUDOCS 9909210123
Download: ML20212C059 (3)

Text

o n September 17, 1999 i

Mr. Oliver D. Kingsley, President

, Nuclear Generation Group Commonwealth Edison Company Executive Towers West 111 1400 Opus Place, Suite 500 Downers Grove,IL 60515

SUBJECT:

REGULATORY GUIDE 1.97 - BOILING WATER REACTOR NEUTRON FLUX MONITORING - LASALLE COUNTY STATION, UNITS 1 AND 2 (TAC NO.

M77660)

Dear Mr. Kingsley:

Section 6.2 of Generic Letter 82-33 requested applicants and licensees to provide a report on their implementation of Regulatory Guide 1.97 (RG). The BWR Owners' Group responded by submitting NEDO-31558, " Position on NRC Regulatory Guide 1.97, Revision 3, Requirements for Post Accident Neutron Monitoring System," which proposed alternative criteria for neutron flux monitoring instrumentation in lieu of the Category 1 criteria stated in the RG. In a safety evaluation dated January 13,1993, the staff concluded that the criteria of NEDO-31558 was acceptable.

By letter dated June 3,1993, the staff requested you to review the LaSalle County Station, Units 1 and 2, neutron flux monitoring instrumentation against the criteria of NEDO-31558 and document the results of your review. Your letters dated August 17 and November 12,1993, and June 21,1999, provided the results of your review. Your letter of June 21,1999, indicated two areas in which LaSalle does not conform with the guidance specified in NEDO-31558. You indicated in your letter that the justification for non-conformance with the NEDO is consistent with the BWROG position and does not compromise plant safety. The staff has reviewed the licensee's justifications for deviations from NEDO-31558 and has determined that they are acceptable. Therefore, the post-accident neutron flux monitoring instrumentation at the LaSalle County Station, Units 1 'and 2, is an acceptable alternative to the guidance in Regulatory Guide 1.97. ,

i Sincerely, Original Signed By Donna M. Skay, Project Manager, Section 2

, Project Directorate ill Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374 DISTRIBUTION: I 9909210123 990917 Docket File :

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> 0. Kingsley I LaSalle County Station .

Commonwealth Edison Company Units 1 and 2 cc:

Phillip P. Steptoe, Esquire Sidley and Austin Robert Cushing, Chief, Public Utilities Division lilinois Attomey General's Office One First National Plaza 100 W. Randolph Street Chicago, Illinois 60603 Chicago, Illinois 60601 l

Assistant Attomey General 100 W. Randolph St. Suite 12 Document Control Desk Licensing Chicago, Illinois 60601 Commonwealth Edison Company 1400 Opus Place, Suite 400 Downers Grove, Illinois 60515 U.S. NRC-LaSalle Resident inspectors Office 2605 N. 21st Road Marseilles, Illinois 61341-9756 Commonwealth Edison Company Site Vice President- LaSalle 2601 N. 21st Road Chairman Marseilles, Illinois 61341-9757 LaSalle County Board of Supervisors LaSalle County Courthouse Mr. David Helwig Ottawa, Illinois 61350 Senior Vice President Commonwealth Edison Company Attomey General Executive Towers West !!!

500 S. Second Street 1400 Opus Place, Suite 900 Springfield, Illinois 62701 Downers Grove, Illinois 60515 Chairman Mr. Gene H. Stanley lilinois Commerce Commission PWR Vice President 527 E. Capitol Avenue, Leland Building Commonwealth Edison Company Springfield, Illinois 62706 Executive Towers West til 1400 Opus Place, Suite 900 tilinois Department of Nuclear Safety Downers Grove, Illinois 60515 Office of Nuclear Facility Safety 1035 Outer Park Drive Mr. Christopher Crane Springfield,lllinois 62704 BWR Vice President Commonwealth Edison Company Regional Administrator Executive Towers West lll U.S. NRC, Region ill 1400 Opus Place, Suite 900 801 Warrenville Road Downers Grove, Illinois 60515 Lisle, Illinois 60532-4351 Commonwealth Edison Company l

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. LaSalle Station Manager i

2601 N. 21st Road '

Marseilles, Illinois 61341-9757 l

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O. Kingsley LaSalle County Station .

Commonwealth Edison Company Units 1 and 2 Mr. R. M. Krich Vice President - Regulatory Services Commonwealth Edison Company Executive Towers West 111 1400 Opus Place, Suite 500 Downers Grove, Illinois 60515 Commonwealth Edison Company Reg. Assurance Supervisor- LaSalle 2601 N. 21st Road Marseilles, Illinois 613419757 Ms. Pamela B. Stroebel Senior Vice President and General Counsel Commonwealth Edison Company P.O. Box 767 Chicago, Illinois 60690-0767 l

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