ML19319C529
| ML19319C529 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 10/07/1974 |
| From: | Stello V US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Moore V US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 8002190960 | |
| Download: ML19319C529 (2) | |
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1974 Docket No. 50-346 Richard C. DeYoung, Jr., Assistant Director for LWR's, Group 1, L CAVIS-BESSE NUCLEAR POWER STATION, DOCKET NO. 50-346 Plant Name: Davis-Besse Nuclear Power Station Licensing Stage: OL Docket No.: 50-346 Responsible Branch and Project Leader: LWR 2-3, I. Peltier Requested Completion Date: October 4,1974 Applicant's Response Date Necessary for Completion of Next Action Planned on Project: December 6,1974 Description of Response: Position Statements Review Status: Awaiting Infonnation An adequate response to the enciesed Position Statement prepared by the Reactor Systeos Branch is required before we can complete our review of the subject application. This request supersedes that da*ed Septenber 4,1974 and concerns compliance by the applicant with the System Quality Group Classification of the Makeup and Purification System.
Victor Stello, Jr., Assistant Director for Reactor Safety l
Direc* orate of Licensing i
Enclosure:
Position Statement DISTRIBUTION:
Central Files cc: w/o encl.
L Reading File l
A. Giambusso, L RSB Reading File l
W. G. Mcdonald, L VStello cc: w/ encl.
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.e Davis Besse Nuclear Power Station Docket No. 50-346 1.
In Figure 9-21 of the Makeup and Purification System, the classification change of the letdown line from Quality Group B to Quality Group C at values MU 83, MU 87 and MU 86, and continuing through the purification
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filter, purification demineralizers, makeup filters, seal return coolers,-
makeup tank to the suction side of the makeup pumps is not in agreement with current AEC practice. The Regulatory staff position is that the entire letdown line of the Makeup and Purification should be classified Quality Group B.
1.1 Since the system is_in an advanced stage of completion, demonstrate that with additional nondestructive testing requirements you will impose on system piping, your proposed classification will provide a quality level essentially equivalent to that associated with Quality Group B.
1.2 Indicate those measures that will be taken to implement any additional requirements in 1.1 above in terms of tr.e quality assurance provisions to be applied.
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