ML19210B363
| ML19210B363 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 10/09/1973 |
| From: | Anthony Giambusso US ATOMIC ENERGY COMMISSION (AEC) |
| To: | John Miller METROPOLITAN EDISON CO. |
| References | |
| NUDOCS 7911070689 | |
| Download: ML19210B363 (2) | |
Text
.
OCT 9 1373 Docket No.
50-289 Metropolitan Edison Company ATTN:
Mr. John G. Miller Vice President P. O. Box 542 Reading, Pennsylvania Centlemen:
The Regulato8y $taff has had the subject of anticipated transients without scram (ATWS) in water-cooled reactor power plants under study for some time.
The staff has completed its review of AWS and has concluded that measures should be taken to improve nuclear plant designs in this regard. Details of the staff review and conclusions and of the steps that should be taken to deal with ATWS are given in the staff
" Technical Report on Anticipated Transients Without Scran for Water-Cooled Power Reactors," September 1973, a copy of which is enclosed for your information. The improvement measures acceptable to the staff are outlined in the staff position on AWS, Appendix A, of the enclosed report in descending order of preference; that is, the "A" sections of the staff position describe the ultimate objective. For those facilities for which the imposition of the requirements of the "A" sections is not practical, the staff will accept tha alternate approaches of the "B" or "C" sections subject to the limitations specified in the staff position. The rationale and bases for this approach are given in the enclosed report.
Acceptable measures that should be taken for the subject facility (s) are either those in the "A" or the "C" sections of the staff position.
If there is reasonable assurance that the provisions of the "A" sections can be met satisfactorily on a reasonable schedule (less than 3 years) for the subject facility (s), you need not analyze the consequences of ATWS.
You must, however, provide sufficient analyses and discussion to justify 1584 284 CFelCE >... '
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1 Metropolitan Edison Company OCT 3 S 73 your position and a coc:mitment that you will meet the provisions of the "A" sections or revert to the provisions of the "C" sections if required by the staff. You should advise the staff by no later than January le 1974, of the approach you intend to take and submit a detailed report addressing fully, either the "A" or "C" sections of the staff position by October 1,1974, as an a:nendment to the Safety Analysis Report.
The staff is prepared to discuss this matter with you at a mutually agreeable time.
Sincerely.
Original Signed E
k A. Giambusso, Deputy Director for Reactor Projects Directorate of Licensing
Enclosure:
Technical Report on ATWS for Water-Cooled Power Reactors, September 1973 cc:
George F. Trowbridge, Esquire Shaw, Pittman, Potts &
Trowbridge 910 17th Street, NW Washington, D. C.
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