ML19254F655
| ML19254F655 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 10/22/1979 |
| From: | Ippolito T Office of Nuclear Reactor Regulation |
| To: | Peoples T COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 7911160197 | |
| Download: ML19254F655 (2) | |
Text
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12 kb pn aroog'o gi UNITED STATES g
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NUCLEAR REGULATORY COMMISSION aj WASHINGTON, D. C. 20555
\\....,o8 OCTOBER 2 2 1979
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Docket Nos. 50-254 and 50-265 Mr. D. Louis Peoples Director of Nuclear Licensing Commonwealth Edison Company P. O. Box 767 Chicago, Illinois 60690
Dear Mr. Peoples:
In the Safety Evaluation Report (SER) for fire protection supporting Amendments Nos. 52 and 49 to Facility Operating Licenses Nos. DPR-29 and DPR-30 for the Quad Cities Nuclear Power Station Units Nos.1 and 2, Alternate Safe Shutdown Capability was identified as an incomplete item of review in Section 3.2.2.
To expedite the completion of our review of this item, we are enclosing our position entitled, " Safe Shutdown Capability". Section 8 of this document specifies the infomation we require to complete our review.
Please provide this information within 90 days of the date of this letter.
If some of the infomation is already available in a previous submittal, you need only reference that material.
Si ncerely, t
TfIomaI
, Chief Operating Reactors Branch #3 Division of Operating Reactors
Enclosure:
Staff Position - Safe Shutdown Capability 79]j jg [
cc w/ enc 1osure:
i347 353 See " ext P*9e y,,,,,n
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Mr. Cordell Reed Commonwealth Edison Company
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Mr. D. R. Stichnoth President Iowa-Illinois Gas and Electric Company 206 East Second Avenue
- Davenport, Iowa 52801 Mr. John W. Rowe Isham, Lincoln & Beale Counselors at Law One First National Plaza, 42nd Floor Chicago, Illinois 60603 Mr. Nick Kalivianakas Plant Superintendent Quad. Cities Nuclear Power Station
.22710 - 206th Ave ~nue - North Cordova, Illinois 61242 Anthony Z. Roisman Natural Resources Defense Council 917 15th Street, N. W.
Washington, D. C. 20005 Moline Public Library 504 - 17th Street
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Moline, Illinois 61265 Susan N. Sekuler Assistant Attorney General
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Environmental Control Division 188 W. Randolph Street Suite 2315 Chicago, Illinois 60601 Mr. N. Chrissotimos, Inspector US Nuclear Regulatory Commission Box 756 Bettendorf, Iowa 52722 l347 354
STAFF POSITION SAFE SHUTCGiN CAPASILITY Staff Concern During the staff's evaluation of fire protection programs at c;erating plants, one or more specific plant arets may be identified in which the staff does not have adequate assurance that.a pcstulated fire will not damage both redundant divisions of snutdown systems.
This lack of assurance in safe shutdown capability has resulted from cne or both of the fo11cwing situations:
Case A:
The license.e has not adequately identified the systems and components naquired for safe shutdown and their iccation in specific fire areas.
Case 3:
The licensee has not demonstrated that the fire protection for specific plant areas will prevent damage to both redundant divisiens of safe shutdown components identified in these areas.
For Case A, the staff has required that an adequate safe shutdown analysis be performed. This evaluation includes the identification of the systems required for safe shutdown and the locatien of the system c:mpenents in the plant. Where it is determined by this evaluation that safe shutdown components of both redundant divisicas are located.in the same fire area, the licensee fs required t: demonstrate that a pestulated fire will net damage both divisicns or provide alternate shutdewn capability as in Case B.
For Case B, the staff may have required that an alternate shutdown capability be provided with is independent of the area of concern or the licensee may have preposed such a capability in lieu of The certain additional fire protection modifications in the area.
specific modifications associated with the area of concern along with other systems and equipment already independent of the area form the alternate shutdown capability.
For each plant, the modifications needed and the c mbinations of systems which provide the shutdown functions may be unique for each critical area; however, the sh0tdown functions provided should maintain plant parameters within the bounds of the limiting safety consequences deemed acceptable for the design basis event.
Staff Position Safe shutdown capability should be demonstrated (Case A) or alternate shutdown ca: ability provided (Case B) in accordance with
.he guidelines previded below:
- 1. Msicn Basis Event he desicn basis event for cens-snutd:wn'is a pestulated fire i:
e hncant safe shu:d:wn ca:les/t it.as :een de: ermined that fi-'
DUPLICATE DOCUMENT
-.2 Safe snut::wn capa:ility a de ::nsidered:
(1) offsite pe$
Entire document previously entered into system under:
pe,,er is n:t availacle.
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No. of pages:
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