ML19329B721

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Forwards Matl Engineering Branch Input to SER Suppl,Revising Section 5.3, Reactor Vessel Integrity. Reactor Vessel Matl Surveillance Program Acceptable.Addl Info Needed Re Higher Lead Factor & Proposed Withdrawal Schedule
ML19329B721
Person / Time
Site: Davis Besse Cleveland Electric icon.png
Issue date: 04/04/1977
From: Knight J
Office of Nuclear Reactor Regulation
To: Vassallo D
Office of Nuclear Reactor Regulation
Shared Package
ML19329B722 List:
References
NUDOCS 8002060729
Download: ML19329B721 (2)


Text

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^F Cocket No. 50-346 MS 27-12 HEMORANDUM FOR:

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

J. P. Knight, Assistant Director for Engineering SUCJECT:

TOLECO EDISON, DAVIS-BESSE flUCLEAR POWER STATION, UNIT ii0.1 (OL) DOCXET iCMBER 50-346, SER SUPPLEMENT Plant Name: Davis-Besse Nuclear Power Station, Unit No.1 Suppliers: Babcock and Wilcox; Bechtel Associates Docket Number: 50-346 Licensing Sthge: OL Responsible Branch and Project Manager: LVR 1; L. Engle Reviewer:

M. R. Hisi Requested Cocpletion Date: March 15,1977 Description of Response: SER Supplement Review Status: Applicant Response Required The haterials Engineering Branch has completed the review of all available infomation concerning the Davis-Besse Unit No. I reactor vessel material surveillance (RVMS) program. Our SER Supplement revising Section 5.3, "Raactor Vessel Integrity " to ucdata our evaluation of the RYMS program is attached. The revised input is enclosed in brackets.

Our conclusions are sunsaarized as follows:

1.

The Davis-Besse Unit No. 1 reactor vessel material surveillance program with the new surveillance specimen holder tube location is acceptable through the first fuel cycle when the first capsule is scheduled to be withdrawn and evaluated.

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4 D. B. Vassallo 2.

We will require additional information to justify the higher lead factor and the proposed withdrawal schedule which is different from Appendix H Section II.C.3.c.

J. P. Knight, Assistant Director for Engineering Division of Systems Safety Office of Nuclear Reactor Regulation

Enclosure:

As stated cc w/ encl:

R. E. Heineman, DSS D. G. Eisenhut. DOR J. Miller, NRR J. P. Knight, DSS R. J. Bosnak DSS L. Shao, 00R S. S. Pawlicki, DSS U. Potapovs, DSS H. F. Conrad, DSS W. S. Ha :elten, 00R J. M. McGough, DOR V. Noonan, DOR L. Engle, DPM J. Roe, 00R F. B. Litton, DSS V. Goel, OSD M. Bolotsky, DSS M. R. Hum, DSS cc w/o enc 1:

R. S. Boyd, DPH W. G. Mcdonald, MIPC DISTRIBUTION:

Docket File (50-346)

NRR Reading File MTEB Reading File RE 1.1-1 DSS:MTEB[DSS:MTEB, DSS:MTEA DS lE _

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