ML19329E544
| ML19329E544 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 12/22/1976 |
| From: | Howell S CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | Boyd R Office of Nuclear Reactor Regulation |
| References | |
| 3065, NUDOCS 8006160339 | |
| Download: ML19329E544 (2) | |
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Director of Nuclear Reactor Regulation Attention: Mr Roger Boyd, Director S
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%ssm M MIDLAND PROJECT DOCKET NUMBERS:
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ATWS LETTER REPORT l[ #/
FILE: Bl.13.2 SERIAL: 3065 In your letter of June 25, 1976 you requested analyser of ATWS events as they relate to Midland Plant Units I and II.
This information, as well as identi-fication of any design changes needed, was requested to be provided by December 30, 1976.
B&W has submitted a letter report to Mr R Heineman, Director, Division of Sys-tem Safety, dated December 3, 1976. This report provides analyses of the B&W 177 Fuel Assembly plant type. These results were generated per the December 1975 NRC Status Report requirements and represent the =ost adverse ATWS events.
These results are generally applicable to the Midland Unit I and II.
We would like to take this opportunity to reaffirm our support of B&W's position that the status report models and assumptions are, together, overly conservative and place req u ements on units more restrictive than those proposed in WASH-1270.
The B&W report clso identifies a design change appropriate for the conditions predicted by the status report assumptions and analysis techniques. Thus, the Staff has available, in consideration of the licensing reviev schedule of the Midland Units, sufficient information to satisfy the NRC request of June 25, 1976. B&W will continue with the prepare. tion of an ATWS Topical Report based on a March 1,1977 targeted completion date. The Midland Plant speciffc analysis cannot be effectively started until the B&W generic Topical ATL'S analysis has been tentatively accepted by the NRC.
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~ NRC DISTRIBUTION PoR PART 50 DOCKET MATERI AL' TO: R.S. BOYD FROM: CONSUMERS POWER CO.
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oESCRIPTeoN ENCLOSU RE LTR. RE. OUR 6-25-76 LTR....
RESPONSE TO REQUEST FOR ANALYSES OF ATWS EVENTS ACKNOWLEDGED AS THEY RELATE TO MIDLAND UNITS I & II....
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DONOT REMOVE DISTRIBtTIION FOR INFORMATION CONCERNING ATWS (PRIOR TO ISSUANCE OF OL)
PLA?TE NAME: MIDLAND # 1 & 2 FOR ACTION /INFORMATION SAB 1/3///
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