ML17194A663
| ML17194A663 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 04/30/1982 |
| From: | Lainas G Office of Nuclear Reactor Regulation |
| To: | Delgeorge L COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML17194A664 | List: |
| References | |
| NUDOCS 8205120418 | |
| Download: ML17194A663 (4) | |
Text
Docket No. 50-237 and 50-249 Mr. L. DelGeorge Director of Nucle~r L1censi~~
Conunonwealth Edison Ccimpany Post Office Box 767 Chicago,*Illino1s 60690 *
Dear Mr. DelGeorge:
April 30, 1982
SUBJECT:
FIRE PROTECTION RULE - 10 CFR S0.48(c)(S) - ALTERNATIVE SAFE SHUTDOWN - SECTION 111.G.3 OF APPENDIX ~TO 10 CFR SO - DRESDEN STATION UNITS 2 AND 3 The Fire Protectfon Rule (10 CFR 50.48 and Appendix R to l 0 CFR SO-) became effective on February 17, 1981.
Paragraph 50.48(c)(S) required submittal of design descriptions of modifications needed to satisfy Section III.G.3 of Appendix R to l 0 CFR 50 by March 19, 1981.
By letters dated January 29, 1982 and March 16, 1982, you submitted the design.description of modifications required to meet Section III.G.3 of Appendix R to.10 CFR SO for Dresden Station Units 2 a.nd 3.
We have reviewed your submittal and find that additional information is required for us to complete our review.
The i~fonnation required was originally requested from you by letter dated February 20, 1981. Enclosure l to this letter indicates what infonnation you have* not supplied. Provide a complete response to items indicated in the enclosure within 60 days of receipt of this letter. If your response is not complete at that time, you will be found in violation of 10 CFR S0.48(c)(S).
Such a violation will be a continuing one and a civil penalty m~y be imposed for each day the violation continues. is our contractor's report evaluating the post fire shutdown capability at Dresden Station Units 2 and 3.
- provides a rewording of the request for info.rmatfon included with generic letter 81-12. This rewording is the result of meetings with representative licensees who felt that clarification of the request would help expedite responses. It does not fnclude*any new requests and, there-fore, will not adversely affect licensees' abil fty to respond to generic letter 81-12.
. Enclosure 4 provides information regarding our criteria for evaluating exemption requests from the requirements of Section pt.G.2 of Appe_ndix R..
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.DATE.,................... ~....,....* ~.... :~.*. '.:~ **. :.*, :--:.....*.***.** ~********........................
NRC FORM 318 (10.:00) NRCM 0240 OFFICIAL RECORD.COPY USGPO: 198.1-335-960
...,,,.. M~,..-L. Del George Enclosure 5 provides the Staff's position related to source range flux monitoring.
Since this request relates to an issue specific to Dresden Station Units 2 and 3, OMB clearance under P.O.96-511 is not required.
Enclosures:
(5)
As stated cc w/enclosures:
See next page
.. : :*.':JHSTRIBUTION:
Docket File*
NRC.POR Local PDR.
ORB #5 Rdg.
D. Eisenhut OELD I&E P O'Connor H. Smith R. Ferguson (5)_
J. Heltemes, AEOD OFFICE. -~*n*****
SURNAME. tj':f11j's*******
DATE. *f.... !........ ~.~.....
NRC FORM 318 (10-80) NRCM 0240 Sincerely, Original signedjb~
G. C. Lainas, Assistant Director for Safety Assessment Dfvisfon of Licensing O.FFICIAL RECORD COPY USGP0:1981_-33&-960
cc:
lsham, Lincoln & Beale Counselors at Law e-One First National Plaza, 42nd Floor Chicago, Illinois 60603
. Plant Superin~endent Ores.den Nuclear Power Sta ti on.
Ru ra 1 Route #1
_Morris, Illinois. 60450 U. S. Nuc1ear Regulatory Corrrnission Resident lnspe~tors Office Dresden Station RR #.1 Morris, Illinois 60450 Mary Jo Murray
. Assistant Attorney General Environmental Control Division 188 W. Randolph Street Suite 2315
.Chi ca go, 11 li noi s 60601 Morris Pub1ic Library 604 Liberty Street Morris, I11inois 60451 Chairman Board of Supervisors of
. Grundy County Grundy County Courthouse Morfis, Illinois 60450 John F~ Wolf, Esquire 3409 Shepherd Street Chevy Chase, Maryland 20015 Or. Linda W. Little 500 Hermitage Drive Raleigh, North Caro1ina 27612
- I11i noi s Department of Nuclear Safet;y 1035 Outer Park Drive, 5th Floor Springfield, Illinois 62704 U. S. Environmental Protection Agency Federal Activities Branch
~egion V Office ATTl.f:
Regional Radiation Representative 230 South Dearborn Street Chicago, Illinois 60604 Dr. F o*r..r..es t J. RemicK 305 Ea~t Hamilton Avenue State College, Pennsylvani~
- i6801
- The Honorable Tom Corcoran United States House of Representatives Washington, D. C.
20515*
James G. Keppler Regional Administrator, Region III U.S. NucJear Regulatory Comnission 799 Roosevelt Road Glen Ellyn, IL 60137
ENCLOSURE 1 I:NFORMATI"QN PRE.VI:QUSL y* RE.QUE:STED. A.ND NOT.. ~UP*PlI~D
- l.
You should confirm that the capability will. be provided to achieve cold shutdown within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> as required by Section III.L of Appendix R to 10 CFR Part 50.
- 2.
We have reviewed your submittals dated January 29, 1982 and March 16, 1982, regarding associated circuits~ From the limited information provided we cannot conclude that associated circuits have been adequately addressed.
We request that you provide a point-by-point response to the February 20, 1981 generic letter 81-12, with respect to interaction of associated circuits.
Your response should include fire damage to control room panels and logic panels located elsewhere.
in the plant.
. 3.
Your submittal indicates that the safe cold shutdown analysis depends on the ~anual operation of valves (TCV-3904 A and B) located in the fire area where the fire has occurred.
In addition this analysis takes credit for valves located in the fire area as failing in the open position.
The valves in question are the shutdown cooling heat exchanger valves.
The licensee should demonstrate that these valves will.fail in the open position due to a fire~
- 4.
Your submittal dated May 19, 1981, Item D, is not clear. There are concrete enclosures which protect valves M02-1301-3 and M03-1301-3 individually, which are inside large fire areas~ With a fire in the large fire area, access to these valves is prevented'.
You should demonstrate how valves located~tn the affected fire area are going to be manually operated.
/
- is a copy nf our consultant's repofl which provides the background for the unresolved items:
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