ML20040A366

Forwards Draft Round 1 Questions for Review of B-SAR-205

ML20040A366
Person / Time
Site:	05000561
Issue date:	05/20/1976
From:	Israel S Office of Nuclear Reactor Regulation
To:	Deyoung R Office of Nuclear Reactor Regulation
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UNITED STATES NUCLEAR REGULATORY COMMISSION N

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Docket No. S'IN 50-561 Richard C. DeYoung, Jr., Assistant Director for LWR's, DPM q

'fHRU: Thomas M. Novak, Chief, Reactor Systems Branch, DSS B-SAR-205 ROUND ONE QUESTIONS Plant Name: B-SAR-205 Docket No.:

STN 50-561 Milestone No.:

05-21 Licensing Stage: PDA Responsible Branch & Project Leader:

LWR-1, T. Cox Systems Safety Branch Involved: Reactor Systems Branch Description of Review: Round One Questions

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s Requested Completion Date: April 26, 1976 Review Status:

Complete Adequate responses to the enclosed questions are required to assist in our review of the B&W standard plant B-SAR-205.

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(te' Sanford L. Israel, Section Leader Reactor Systems Branch Division of Systems Safety Office of Nuclear Reactor Regulation

Enclosure:

Questions ec:

S. Hanauer R. Heineman D. Ross J. Stolz T. Cox4' T. Novak S. Israel J. Watt A. Ungaro V. Benaroya G..Mazetis (3)

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212.0 REACTOR SYSTEMS

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i-212.220 Credit is taken for main steam and feedwater isolation for a (15.1) number of events.

Pt. vide, or reference, an interface requirement i

(psp) pertaining to assumed closure times of the main steam and feed-water isolation valves.

Our position is that these closure times must be identified nd will be required to be limiting conditions of ope on.

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212.221 For the loss of of'fpite power event, it is noted that operator (15.1.9) action is required 1g 10 minutes for decay heat removal. This (Rsp) action, as briefly described on page 15.1.9-3, is to maintain the steam relief valves (modulating atmospheric dump valves) open by continually resetting the pressure setpoint.

Our position is that operator action required prior to 30 minutes is not acceptable.

Analyze the event, &' rj' ;; manual actiony u d

30 minutes.

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