ML20037B530
| ML20037B530 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 12/22/1972 |
| From: | Skovholt D US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Butterfield L COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 8010140658 | |
| Download: ML20037B530 (1) | |
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1*r. L. D. Butterfield Jr.
Nuclear Licensing A aInf=trator RMDiggs Post Office Box 767 4
Chicago, Illinois 60690 Y
centlemen:
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Uc hm e reviewed your letter dated l'ay 1,1972, concerni=p complicnce with tbs AEC Interim Acceptance Criteria for LCCS for Ercaden Unit 1.
Inc mnnlyses discussed in that letter are based on the cscu=ption that 1
the primary foedvatar system is available during a loss-of-cocient accident. Because of the lack of redundant, reliable onsite emergency j
power for the feedvater pumps and the apparent inchility to assure adequate coolant supply in the event of a break in the f eedwater licc.s.
this assumption cannot be considered valid. We thereforc request thct you subnit within 60 days of the date of this letter, a conceptual design of a system with reliable coolcat supply and oacite power to enable you to co= ply with the interin critcric. Uc cire regnect that your cub =ittal include an estic.ated time interval between the dcte of
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AEC approvcl cf the conceptual design and the date of ccinittn1 of a dctciled design and analysis and an estimated ti.e interni Ectueen the date of AEC acceptance of a detailed design read the date of co=pleting the rodifications.
i Your submittal should include detailed justification for departures i
from current standards of ra11mbility and justification for your I
proposed schedule. The requested information should be subnitted with one signed original and thirty-nine mAdftional copies.
i Sinecrcly, Cric-1 q c Dc m ? :. l
.'l Donald J. Skovholt g
Assistant Director i
for Operating Reactors i-Directorate of Licensing cc: John V. Eose, Esquire
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