ML19260E075
| ML19260E075 | |
| Person / Time | |
|---|---|
| Site: | Zion File:ZionSolutions icon.png |
| Issue date: | 01/18/1980 |
| From: | Eisenhut D Office of Nuclear Reactor Regulation |
| To: | Reed C COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 8002130289 | |
| Download: ML19260E075 (3) | |
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UNITED STATES
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s, NUCLEAR REGULATORY COMMISSION s,, c h \\ "@ j j WASHINGTON, D. C. 20555 g.;'
gv j JAN 181980 Docket Nos. 50-295 and 50-304 ftr. Cordell Reed Assistant Vice President Commonwealth Edison Company Post Office Box 767 Chicago, Illinois 60690
Dear Mr. Reed:
This letter is to provide additional amplification of my November 29, 1979 letter to you concerning the staff review of Zion Station Units 1 and 2.
Attached is a more detailed listing of considerations that the staff will be exploring, and that you may wish to consider in your Near Site Studies review.
S ncerely, h
R UbH
'lkV W i Darrell G. Eisenhut, Acting Director Division of Operating Reactors Office of Nuclear Reactor Regulation
Enclosure:
Detalied Listing of Considerations cc: w/ enc 1.
See Next Page 3002130 3[
Mr. Cordell Reed Commonwealth Edison Company cc:
Robert J. Vollen, Esquire 109 North Dearborn Street Chicago, Illinois 60602 Dr. Cecil Lue-Hing Director of Research and Development Metropolitan Sanitary District of Greater Chicago 100 East Erie Street Chicago, Illinois 60611 Zion-Benton Public Library District 2600 Emmaus Avenue Zion, Illinois 60099 fir. Phillip P. Steptoe Isham, Lincoln and Beale Counselors at Law One First National Plaza 42nd Floor Chicago, Illinois 60603 Susan N. Sekuler, Esquire Assistant Attorney General Environmental Control Division 188 West Randolph Street, Suite 2315 Chicago, Illinois 60601 Mr. W. Bruce Dunbar Mayor of Zion Zion, Illinois 60099 Department of Public Health ATTN:
Chief, Division of Nuclear Safety 535 West Jefferson Springfield, Illinois 62761 Director, Technical Assessment Division Office of Radiation Programs (AW-459)
U. S. Environmental Protection Agency Crystal Mall d2 Arlington, Virginia 20460 U. 5. Environmental Protection Agency Federal Activities Building Region V Office ATTN:
EIS COORDINATOR 230 South Dearborn Street Chicago, Illinois 60604
STAFF CONSIDERATIONS 1.
Improved Interim 00erational Actions: These actions involve, but are not necessarily limited to, such considerations as increased IE inspections, additional resident inspectors, augmented control room staffing and improved operator qualifications and training.
Selected aspects from the Long Term Lessons Learned Report (NUREG-0585) may also be included as measures to further reduce the likelihood of a severe accident, e.g., corporate management accountability.
In addition, a review of the emergency procedures would be included to improve operational capabilities. Additional measures being considered include increased licensee technical support on site, providing additional in place effluent filters, early verification of the completion of Short Term Lessons Learned actions, and placing the high population density plants at the forefront of any outstanding plant-specific actions.
Any recommended actions identified by the staff's integrated reliability evaluation progran (IREP) will also be a part of this effort. This effort will also include an examination of the derating of the plant during an interim period while the actions in items (2) and (3) below are reviewed.
2.
Current Licensing Actions: The actions involved in this aspect of the plan will include implementation on a priority basis of those TMI-2 Short Term Lessons Learned actions stated in NUREG-0578 and Bulletin and Order review matters.
In addition prompt attention will be given to processing of outstanding amendments for these plants.
Subsequent actions would include implementation of any recommendations resulting from the resolution of unresolved safety items on a priority basis.
3.
Severe Accident Mitigation Features:
In addition tc the increased preventive actions described in (1) and (2) above, there are several measures that may be effective in mitigating the consequences of a major reactor accident invol.ng core melt. Some such measures being considered are filtered, vented containment systems, hydrogen control systems, core retention systems, and dedicated or bunkered safety systems.
Additional means such as derating and measures to augment the existing ECCS via an independent system are considerations that fall between prevention and mitigation and may be effective agents against a major nuclear accident.
Such means also would include a bunkered system with a dedicated heat removal system.