ML19276E652

Forwards SER for Subject Facility.Attention Is Drawn to Items on Mark II Containment Design & NRC Position on Dewatering Level Needed in Foundation Backfill Matls During Operation.W/O Encl

ML19276E652
Person / Time
Site:	Zimmer
Issue date:	01/31/1979
From:	Vassallo D Office of Nuclear Reactor Regulation
To:	Carbon M Advisory Committee on Reactor Safeguards
References
NUDOCS 7903200131
Download: ML19276E652 (2)

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JAN 311979 Docket No: 50-358 Dr. Max W. Carbon, Chairman Advisory Conmittee on Reactor Safeguards U. S. Nuclear Regulatory Commission Washington, D. C.

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SUBJECT:

ISSUANCE OF THE SAFETY EVALUATION REPORT FOR THE WM. H. ZIMMER NUCLEAR POWER STATION, UNIT 1 Sixteen copies of the Safety Evaluation Report (SER), prepared by the Office of Nuclear Reactor Regulation in the matter of the application filed by the Cincinnati Gas & Electric Company for an operating license for the Wm. H. Zimmer Nuclear Power Station, Unit 1, are enclosed for review by the committee.

Section 1.8 of the Safety Evaluation Report summarizes the two review areas considered outstanding at this time, regarding the Mark II containment design and the effects of the Two Loop Test Apparatus test results in our evaluation of the emergency core cooling system perfor-mance.

We will complete our review and reach our final positions in these areas prior to a decision on issuance of an operating license.

Section 1.9 of the Safety Evaluation Report summai;zes those items for which we have reached positions as a result of our review, but for which we are continuing our review of the application to permit us to confirm the implementation of our positions.

Our review of these items also will be completed to our satisfaction prior to a decision on issuance of an operating license.

However, we believe these matters are amenable to early resolution.

Section 1.10 of the Safety Evaluation Report indicates an area of dis-agreement between the staff and the applicant regarding the staff position on the dewatering level that must be maintained in the foundation backfill materials during plant operation.

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<g Dr. Max W. Carbon

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JAN 311979 Resolution of all of the above matters will be rep rtea in future supplements to this Safety Evaluation Repor:..

Sincerely, Jllf,4;;)c!'E-

D. B. Vassallo, Assistant Director for Light Water Reactors Division of Project Management

Enclosure:

Safety Evaluation Report (16)

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