ML20209D910

Forwards Sser Input Re Masonry Wall Issue.License Condition Re Applicant Use of energy-balance Technique to Qualify 42 Masonry Walls Recommended

ML20209D910
Person / Time
Site:	05000000, Diablo Canyon
Issue date:	02/11/1985
From:	Lear G Office of Nuclear Reactor Regulation
To:	Knighton G Office of Nuclear Reactor Regulation
Shared Package
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References
FOIA-86-197 TAC-60090, NUDOCS 8502140309
Download: ML20209D910 (1)

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UNITED STATES NUCLEAR REGULATORY COMMISSION o

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FEB 111985 Docket No. 50-323 MEMORANDUM FOR:

Chief icensing No. 3 Division of Licensing THRU:

6 Robert Bosnak, Acting Assistant Director j iJ for Components and Structures Engineering Division of Engineering i

FROM:

George Lear, Chief Structural and Geotechnical Engineering Branch Division of Engineering

SUBJECT:

SSER INPUT FOR MASONRY WALL ISSUE - DIABLO CANYON UNIT 2 Plant Name: Diablo Canyon Unit No. 2 Docket No.: 50-323 Licensing Stage: OL Responsible Branch:

LB-3, H. Schierling, LPM Requested to Date: January 31, 1985 The information provided by the applicant on the subject issue has been reviewed and evaluated by the Structural and Geotechnical Engineering Branch. Our section of the safety evaluation report supplement is provided in the enclosure.

In summary, our evaluation indicates that the issue yet to be resolved between the staff and the applicant pertains to the applicant's use of the energy-balance technique to qualify 42 masonry walls. The existence of the same issue on Unit I resulted in a license condition for Unit 1.

Therefore, the same license condition is recommended for Unit 2.

0 yNW George Lear, Chief Structural and Geotechnical Engineering Branch Division of Engineering

Enclosure:

As stated cc:

D. Jeng P. Kuo E. Sullivan H. Polk

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H. Schierling N. Chokshi

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N. Chokshi, x28967 J')(/

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