ML20126L821

Forwards Suppl to Safety Evaluation Supporting Response to IE Bulletin 80-11 Re Reevaluation of 22 Masonry Walls, Utilizing Methods Other than Energy Balance Technique

ML20126L821
Person / Time
Site:	Calvert Cliffs
Issue date:	07/18/1985
From:	Butcher E Office of Nuclear Reactor Regulation
To:	Lundvall A BALTIMORE GAS & ELECTRIC CO.
Shared Package
ML20126L823	List: ML20126L821 ML20126L824
References
IEB-80-11, NUDOCS 8508010067
Download: ML20126L821 (2)

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, , July 18, 1985 Docket Nos. 50-317 Distribution:-Docket / Files" and 50-318 NRC& L PDRs HThompson ACRS 10 EJordan OELD PKreutzer DJaffe EButcher Mr. A. E. Lundvall, Jr. BGrimes ORB #3 Gray Vice President - Supply ORB #3 Rdg Baltimore Gas & Electric Company P. O. Box 1475 Baltimore, Maryland 21203

Dear Mr. Lundvall:

By letter dated November 21, 1984, the NRC staff issued its Safety Evaluation concerning masonry wall integrity at Calvert Cliffs Units 1 and 2 as related to our concerns as stated in IE Bulletin 80-11. At that time, we indicated that the evaluation of 22 masonry walls, utilizing the energy balance technique, was unacceptable without further justification. Subsequently, by letter dated June 12, 1985, BG&E presented additional infonnation regarding the evaluation of these walls.

BG&E presented additional information regarding the evaluation of these walls.

The enclosed supplement to our November 21, 1984 Safety Evaluation concludes that BG&E's reevaluation of the subject masonry walls, utilizing methods other than the energy balance technique, is now acceptable. In addition, the NRC staff concludes that Items 2(b) and 3 of IE Bulletin 80-11 have been fully implemented at Calvert Cliffs and that there is a reasonable assurance that all safety-related masonry walls will withstand the specified design load conditions without impairment of (a) wall integrity or (b) the

. performance of the required safety function. Accordingly, your response to IE Bulletin 80-11 is acceptable and our review is complete.

Sincerely, ,

Edward J. Butcher, Acting Chief "' .

Operating Reactors Branch No. 3 Division of Licensing

Enclosure:

As stated cc w/ enclosure:

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l Mr. A. E. Lundvall, Jr.

Baltimore Gas & Electric Company Calvert Cliffs Nuclear Power Plant cc:

Mr. William T. Bowen, President Regional Administrator, Region I Calvert County Board of U.S. Nuclear Regulatory Conmission Commissioners Office of Executive Director Prince Frederick, Maryland 20768 for Operations 631 Park Avenue D. A. Brune, Esq. King of Prussia, Pennysivania 19406 General Counsel Baltimore Gas and Electric Company Mr. Charles B. Brinkman P. O. Box 1475 Manager - Washington Nuclear Operations Baltimore, Maryland 21203 Combustion Engineering, Inc.

7910 Woodmont Aver.ue George F. Trowbridge, Esq. Bethesda, Maryland 20814 Shaw, Pittman, Potts and Trowbridge 1800 M Street, NW Mr. J. A. Tiernan, Manager Washington, DC 20036 Nuclear Power Department Calvert Cliffs Nuclear Power Plant Mr. R. C. L. Olson, Principal Engineer Maryland Routes 2 and 4 Nuclear Licensing Analysis Unit Lusby, Maryland 20657 Baltimore Gas and Electric Company Room 922 - G&E Building Mr. R. E. Denton, General Supervisor P. O. Box 1475 Training and Technical Services Baltimore, Maryland 21203 Calvert Cliffs Nuclear Power Plant Maryland Routes 2 and 4 Lusby, Maryland 20657 Resident 'nspector ,

c/o U.' ear Regulatory Commission Combustion Engineering, Inc.

P. O. t 27 ATTN: Mr. R. R. Mills, Manager Lusby, / land 20657 Engineering Services P. O. Box 500 Mr. Leon B. Russell' Windsor, Connecticut 06095 Plant Superintendent Calvert Cliffs Nuclear Power Plant Departnent of Natural Resources' Maryland Routes 2 and 4 Energy Administration, Power Plant Lusby, Maryland 20657 Siting Program ATTN: Mr. T. Magette

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Bechtel Power Corporation Tawes State 0ffice Building ATTN: Mr. J. C. Ventura Annapolis, Maryland 21204 Calvert Cliffs Project Engineer 15740 Shidy Grove Road Gaitherst urn, Maryland 20760 Mr. R. M. Douglass, Manager Quality Assurance Department Baltimore Gas and Electric Company Fort Smallwood Road Complex P. O. Box 1475 Baltimore, Maryland 21203