ML19254D255
| ML19254D255 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 09/28/1979 |
| From: | Lainas G Office of Nuclear Reactor Regulation |
| To: | Ziemann D Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7910230231 | |
| Download: ML19254D255 (2) | |
Text
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WASWNGTON. D. C. 20555
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SEP 2 81979 MEMORANDUM FOR:
Dennis L. Ziemann, Chief, Operating Reactors Branch #2, 00R FROM:
G. Lainas, Chief, Plant Systems Branch, D0R
SUBJECT:
FIRE PROTECTION - DRESDEN 1 - COMMONWEALTH EDIS0N LETTER OF AUGUST 31, 1979 Plant f;ame:
Dresdent Unit No.1 Licensee:
Commonwealth Edison Company Docket No. : 50-10 Project Manager:
S. Nowicki Responsible Branch: Operating Reactors Branch *2 Requested Completion Date: 9/24/79 Status : SER issued, review started on incomplete items.
The licensee's letter of August 31,1979 (Enclosure 1) addressed three incomplete items, (3.2.5, 3.2.6, and 3.2.7) which concern modi fications to the emergency condenser valves, make-up supply, and level indication to provide safe shutdown capability in the event of a fire.
The letter stated that since safe shutdown capability was being evaluated as part of the SEP (Systematic Evaluation Program) that the completion of these items would be deferred.
The deferral of these safe shutdown capability issues to the SEP is consistent with D0R policy.
We will evaluate the adequacy of the fire protection afforded the safe shutdown capability after the SEP is complete.
At present, we expect the SEP to be completed in 1981., the status summary sheet, 5ccurately reflects the present review status on the incomplete items.
by <
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G. Lainas, Chief Plant Systems Branch Division of Operating Reactors Enclosures :
1.
Letter dtd 8/31/79 from CECO 2.
Status Summary Sheet i196 047 7 9102 3 0 E 3 I
s Dennis L. Ziemann cc w/ enclosures:
G. Lainas R. Ferguson D. Eisenhut E. Sylvester M. Antonetti J. Shapakar D. Crutchfield M. Fletcher S. flowicki L. Us,-derian T. Wambach B. Grimes 1196 048
LNLLU5URL I C.. Ome First Natemal Ptara CNeage itanois Commonwealth Edison m
Accress Reply to: Post Othee Box 767 Cmcago. Ithnois 60690 August 31, 1979 Mr. Dennis L.
Ziemann, Chief Operating Reactors - Branch 2 Division of Operating Reactors U.S. Nuclear Regulatory Commission Washington, D.C.
20555
Subject:
Dresden Station Unit 1 Fire Protection Modifica_tions NRC Docket No. SC-10 Reference (a) :
Dresden Unit 1 Fire Protection Safety Evaluation Report dated August 9, 1979
Dear Mr. Ziemann:
Items 3.25, 3.26, and 3.27 of Reference (a) requested additional plant modifications to the emergency condenser valves, make-up supply, and level indication to allow utiliration of the condenser as the heat sink for safe shutdown of the plant in the event of a fire.
Table 3.2 of Reference (a) required a decision on these items by September 1, 1979.
The safe shutdown capabilities of Dresden Unit 1 are currently being evaluated as part of the Systematic Evaluation Program (SEP).
The conclusions reached in the SEP safe shutdown analysis may influence the outco'me of the safe shutdown analysis for fire protection.
Therefore, a decision concerning the modifi-cations to the emergency condenser will be deferred to allow coordination with the SEP effort and prevent design and installation of a possibly incomplete or unnecessary modification to the system.
Please address any questions you may have concerning this matter to this office.
One (1) signed original and thirty-nine (39) copies of this transmittal are provided for your use.
a Very truly yours,
.g xyr z
h o Robert F.
Janecek
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Nuclear Licensing Administrator Boiling Water Reactors ov 1196 049 79d906" n1
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s Q't 7F Date:
8/9/79 Reviewer:
L. Derderian RESOLUTION 0F INCOMPLETE ITEMS - STATUS DRESDEN UNIT 1 Staff Licensee Evaluation Response Due 3.1.1 Fire Detection Systems Information January 1980 (a
In the control room (b
In the sphere penetration area 3.1.2 Water Suppression Systems Information January 1980 (a) sphere cable penetration area Information January 1980 (b) north auxiliary bay Information January 1980 (c) hydrogen seal oil area Information January 1980 (d) cable passageway Information January 1980 (e) Unit 1 trackway, laundry and Information January 1980 welding shop (f) diesel fire pump area in Information January 1980 screen house (g) core spray and post incident Information January 1980 pump ares (h) new fuel receiving area Information January 1980 (i) clean and dirty oil storage. room Information January 1980 3.2.1 Detection System Tests Information January 1980 3.2.2 Tech Specs for System Hose Stations Information January 1980 3.2.3 Fire Water System Feeds Incomplete None 3.2.4 Exposed Structural Steel Incomplete None 3.2.5 Emergency Condenser Valves Deferred to SEP None 3.2.6 Emergency Condenser Makeup Deferred to SEP None 3.2.7 Emergency Condenser Level Indication Deferred to SEP None 1196 050
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