ML19317D680
| ML19317D680 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 10/09/1973 |
| From: | Anthony Giambusso US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Thies A DUKE POWER CO. |
| References | |
| NUDOCS 7912060906 | |
| Download: ML19317D680 (2) | |
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OCT S 5 73 Docket No. gg W 270 l
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6 g gy The Regulatory staff has had the subject of anticipated transients without scram (ATUS) in water-cooled reactor power plaats under study for some time.
The staff has completed its review of ATWS and has coneindad that measures should be takaa.to improve nuclear plant designs in this regard. Dermita of the staff review and conclesfons and of the steps that should be taken to deal with ATUS are given in the staff
" Technical Report on Anticipated Transients Without Scram for Water -
Cooled Power Reactors," September 1973, a copy of which is enclosed for your information. The improvenant measures acceptable to the staff are outlined in the staff position on ATWS, Appendix A, of the enclaamd 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 the alternate approaches of the "B" or "C" sectiona sebject to the limitations specified in the staff position. The racianale 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.
Tou must, however, provide sufficient analyses and discussion to justify m
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your position and a commitment that you will aset 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 1. 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 -d===t. to the Safety Acalysis Report.
r, The. staff is prepared to disemas this matter with you at.a = mat==1Ty
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. ; A. Giambuseo, Deputy Director for Reactor Projects Directorata of Ideensing Enclosuret t
Technical Report on ATWS
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for Water-Cooled Power
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Reactors,. September 1973 cc: William T Fortar DISTRIBUTION:
Duka Power Company AEC PDR F. O. Bos.2178 Local PDll
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RCDeYoung JHendrie AKenneke RWKlecker OCC R0 (3)
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