ML20136B953
| ML20136B953 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 11/06/1985 |
| From: | Butler W Office of Nuclear Reactor Regulation |
| To: | Farrar D COMMONWEALTH EDISON CO. |
| References | |
| RTR-REGGD-01.097, RTR-REGGD-1.097 NUDOCS 8511200331 | |
| Download: ML20136B953 (5) | |
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o UNITED STATES NUCLEAR REGULATORY COMMISSION 7,
rj WASHINGTON. D. C. 20555 s.,*... /
Docket Nos.:
50-373 M.
and.
50-374 Mr. Dennis L. Farrar Director of Licensing Connonwealth Edison Company P.O. Box 767 Chicago, Illinois 60690
Dear Mr. Farrar:
SUBJECT:
ENVIRONMENTAL QUALIFICATION OF ELECTRICAL EQUIPMENT LA SALLE COUNTY STATION, UNITS 1 AND 2 By letter dated September 27, 1985, Commonwealth Edison notified the NRC
'that certain test activities are still in progress for one piece of equipment, Klockner-Moeller Motor Control Centers. The qualification status of the equipment is dependent upon the outcome of these tests.
In addition, your letter discussed concerns of a re-evaluation of the function of the Compsip, Inc., Hydrogen-Oxygen Analyzers. You concluded that this item is not in the scope of the Regulation for Environmental Qualification, 10 CFR 50.49, and need not be qualified by November 30, 1985 as required by 10 CFR 50.49. Your argument was that this equipment does not fall within any of the three categories defined in 10 CFR 50.49 as required to be included in the qualification program. Nevertheless, 10 CFR 50.49 requires that nonsafety-related equipment whose failure could prevent the satisfactory accomplishment of safety functions by safety-related equipment be included in the quali-fication program.
In your letter, you stated that the Comsip, Inc., Hydrogen-Oxygen Analyzers are adequately isolated from the safety-related power by protective devices. However, in your letter cated October 9,1985, you state that these protective devices are located in the Klockner-Moeller Motor Control Centers discussed above. The qualification status of the protective isolation devices is, therefore, dependent on the outcome of the in-progress test activities for the Motor Centrol Centers to be completed by November 30, 1985.
To assure that manual activation of the hydrogen recombiner is not affected by the questionable status of the Comsip, Inc., Hydrogen-0xygen Analyzers you are implementing an interim procedural change for your Emergency Operating Procedures.
In this procedure, you caution the operator to initiate the hydrogen recombiners six hours into the Design Basis Accident-Loss-of-Coolant Accident or any other scenario that could result in core damage. This action is taken independent of hydrogen / oxygen concentrations. Also, the six hours is consistent with the Design Basis Accident analysis.
The Comsip, Inc., Hydrogen-Oxygen Analyzers are also part of the ongoing review of your conformance to the guidance in Regulatory Guide 1.97,
" Instrumentation for Light-Water-Cooled Nuclear Power Plants to assess Plant 8511200331 851106 PDR ADOCK 05000373 P
' and Environs Cundition During and Following an Accident."
In accordance with 10 CFR 50.49, equipment, which is installed in a harsh environment and classified as a required monitor per Regulatory Guide 1.97 Category I or II variable, must be environmentally qualified. Your implementation schedule for Regulatory Guide 1.97 conformance is currently established as August 1986.
Based on our review of the above information, the staff finds that the position you have taken with respect to the Comsip, Inc., Hydrogen-Oxygen analyzers is acceptable on an interim basis until August 1986. This is contingent on the successful qualification of the protective isolation devices by November 30, 1985 identified above. By telecon dated October 30, 1985, you also committed to a submittal by February 1986, addressing the categorization of the Comsip, Inc., Hydrogen-0xygen Analyzers and other remaining open items of Regulatory Guide 1.97.
Walter R. Butler, Chief Licensing Branch ho. 2 Division of Licensing cc: See next page
itr. Dennis L. Farrar La Salle County Nuclear Power Station Commonwealth Edison Company Units 1 & 2 cc:
Philip P. Steptoe, Esquire John W. McCaffrey Suite 4200 Chief, Public Utilities Division One First National Plaza
-160 North La Salle Street, Room 900 Chicago, Illinois 60603 Chicago, Illinois 60601 Assistant Attorney General 188 West Randolph Street
-Suite 2315 Chicago, Illinois 60601 Resident Inspector /LaSalle, NPS U.S. Nuclear Regulatory Comission Rural Route No. 1 Post Office Box 224 Marseilles, Illinois 61341 Chairman La Salle County Board of Supervisors La Salle County Courthouse Ottawa, Illinois 61350 Attorney General 500 South 2nd Street Springfield, Illino:s 62701 Chaiman Illinois Comerce Comission Leland Building
'527 East Capitol Avenue Springfield, Illinois 62706 Mr. Gary H. Wright, flanager Nuclear Facility Safety Illinois Department of Nuclear Safety 1035 Outer Park Drive, 5th Floor Springfield, Illinois 62704 Regional Administrator, Region III U. S. Nuclear Regulatory Comission 799 Rossevelt Road Glen Ellyn, Illinois 60137 I
w n
m 2-
'and Environs. Condition During and Following an Accident."
In accordance l
with 10 CFR'50.49, equipment, which is installed in a harsh enviror. ment-
-and-classified as a required monitor per Regulatory Guide 1.97 Category I or 11 variable, must.be environmentally qualified. Your implementation schedule for Regulatory Guide 1.97 confomance is currently established as l.
August 1986.
I l
Based on our review of the above infomation,-the staff finds that the position you have'taken with respect to the Comsip, Inc., Hydrogen-0xygen analyzers is acceptable on an interim basis until August 1986. This is contingent on the successful qualification of-the protective isolation
~ devices by November 30, 1985 identified above. By telecon dated October 30, 1985, you also committed to'a submittal by February 1986, addressing the i.
categorization of the Comsip, Inc., Hydrogen-0xygen Analyzers and other 1
remaining open items of Regulatory Guide 1.97.
l:
Original Signe<l by Walter R. Butler, Chief Licensing Branch No. 2 Division of Licensing
-cc: See next page Local PDR
.NSIC PRC System LB#2 Reading EHylton L
ABournia l
OELD, Attorney ACRS.(16)
BGrimes
- JPartlow EJordan RLaGrange FRosa JKudrick f.
1.
I i
- Previously concurred:
LB#2/DL LB#2/DL EQB/DE ICSB/DSI 4
SI LB#2/DL l
- ABournia
- EHylton *RLaGrange
- FRosa d ick WBu er 11/04/85 11/04/85 -11/05/85 11/05/85 1f
/85 11
/85
. and Environs Condition During and Following an Accident."
In accordance with 10 CFR 50.49, equipment, which is installed in a harsh envircr. ment and classified as a required monitor per Regulatory Guide 1.97 Category I or 11 variable, must be environmentally qualified. Your implementation schedule for Regulatory Guide 1.97 confonnance is currently established as August 1986.
Based on our review of the above infonnation, the staff finds that the position you have taken with respect to the Comsip, Inc., Hydrogen-0xygen analyzers is acceptable on an interim basis until August 1986. This is contingent on the successful qualification of the protective isolation devices by November 30, 1985 identified above. By telecon dated October 30, 1985, you also comitted to a submittal by February 1986, addressing the categorization of the Comsip, Inc., Hydrogen-0xygen Analyzers and other i
remaining open itens of Regulatory Guide 1.97, i
Original Sicneit by i
Walter R. Butler, Chief Licensing Branch No. 2 Division of Licensing cc: See next page Distribution Docket File NRC PDR Local PDR NSIC PRC System LB#2 Reading EHylton ABournia OELD, Attorney ACRS (16)
BGrimes JPartlow EJordan RLaGrange FRosa JKudrick
- Previously concurred:
LB#2/DL LB#2/DL EQB/DE ICSB/DSI 4
SI LB#2/DL
- ABournia
- EHyltcn *RLaGrange
- FRosa K drick WButler 11/04/85 11/04/85 11/05/85 11/05/85 1
.,,g /85 11/g/85