ML20248B904

Advises That NRC Agrees W/Util That Bunker Ramo Instrument Electrical Penetration Assemblies Deemed Environmentally Qualified to Perform Intended Functions & Licensing Activity on Issue Considered Closed

ML20248B904
Person / Time
Site:	LaSalle
Issue date:	06/07/1989
From:	Shemanski P Office of Nuclear Reactor Regulation
To:	Kovach T COMMONWEALTH EDISON CO.
References
NUDOCS 8906090203
Download: ML20248B904 (4)

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UNITED STATES

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NUCLEAR REGULATORY COMMISSION

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WASHINGTON, D. C. 20555 RN...+}

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June 7, 1989 Docket No. 50-374 Mr. Thomas J. Kovach Nuclear Licensing Manager Comenwealth Edison Company P. O. Box'767 Chicago,LIllinois 60690 i

SUBJECT:

LASALLE UNIT 2 BUNKER RAMO INSTRUMENTATION PENETRATION MODULES

REFERENCES:

(a). January 31, 1989, G. Holahan letter to H..E. Bliss (b) April 28,.1989, S. C. Hunsader' letter to T. E. Murley (c).-May 2, 1989, S. C. Hunsader-letter to T. E. Murley I

In reference (a), the NRC staff stated that without additional information reSarding. IR values recorded during peak LOCA ' temperatures and the test conditions when the lowest.value was recorded, there is insufficient test data and supporting analysis to demonstrate functional operability of the Bunker Ramo penetrations during design basis event conditions.

In response to the

-staff's concerns on this_ issue, Edison met with the NRC staff on April 25, 1989.to present the bases for Edison's position that the Bunker Ramo modules Lfor the LaSalle Unit 2 are environmentally qualified for the plant specific application.

t The NRC staf f has subsequently reviewed the Qualificatich Test Program Report' on Bunker Ramo's instrument penetration assemblies completed for Coranonwealth Edison Company b.y WYLE Laboratories. The purpose of.the qualification program was to verify tht: ability of the Bunker Rano electrical penetrations to perform their intended safety-related electrical functions before, during, and

.after environmental qualification tests. The main objective for testing the penetrations was to demonstrate that the Bunker Ramo Instrument Electrical Penetration Assen.blies would maintain their electrical integrity throughout plant accident conditions.-

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- Based on our review of the test report, the NRC staff agrees with the licensee's conclusion that based on the test results provided in the test report, the Bunker Ramo Instrument Electrical Penetration Assemblies are environmentally qualified to perform their intended functions. Thus, the licensing activity on this issue is considered closed.

Sincerely, l

Qal C. SY Paul C. Shemanski, Acting Director Project Directorate III-2 Division of Reactor Projects III, IV, V, and Special Projects cc:

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Mr. Thomas' J. Kovach LaSalle County Nuclear Power Station Commonwealth Edison Company Units 1 & 2 cc:-

Phillip P. Steptoe, Esquire John W. McCaffrey Sidley and Austin Chief. Public Utilities Division One First National Plaza 501C Chicago, Illinois 60603 100 West Randolph Street Chicago, Illinois 60601 Assistant Attorney General 100 West Randolph Street Suite 12 Chicago, Illinois 60601 Resident Inspector /LaSalle, NPS U.S. Nuclear Regulatory Comission

' Rural Route No. 1 P. O. Box 224 Marseilles, Illinois 61341 Chairman LaSalle County Board of Supervisors

'LaSalle County Courthouse-Ottawa. Illinois 61350-Attorney General 500 South 2nd Street Springfield, Illinois 62701 Chairman Illinois Commerce Comission Leland Building 527 East Capitol Avenue Springfield, Illinois 62706 Mr. Michael C. Parker, Chief Division of Engineering Illinois Department of Nuclear Safety 1035 Outer Park Drive, 5th Floor Springfield, Illinois 62704 Regional Administrator, Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road, Bldg. f4 Glen Ellyn, Illinois 60137 L

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Thomas J. Kovach

' Based'on our review of the test report, the NRC' staff agrees with the licensee's conclusion that based on the test results provided in the test I

report, the' Bunker Ramo Instrument Electrical Penetration Assemblies are i

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' environmentally qualified to perform'their intended functions. Thus, the-licensing activity on this issue is considered closed.

Sincerely, C S Paul C. Shemanski, Acting Director Project Directorate III-2 Division of Reactor Projects III, IV, V, and Special' Projects cc: See next page DISTRIBUTION CEocketJ11e.d.

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