ML20054E892

Forwards Request for Addl Info on SER Open Items Re Masonry Walls & Ultimate Containment Capacity.Response Due within 7 Days of Receipt of Ltr

ML20054E892
Person / Time
Site:	Midland
Issue date:	06/08/1982
From:	Tedesco R Office of Nuclear Reactor Regulation
To:	Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
References
NUDOCS 8206140402
Download: ML20054E892 (4)

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DISTRIBUTION Docket No. 50-329/330 1

UUN 8 1982 NRC PDR Local PDR LB#4 r/f Docket Nos.: 50-329 R. Tedesco m 7

and 50-330 E. Adensam 0>

M. Duncan s N D. Hood t 4

R. Hernan ~

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'tr. J. W. Cook OELD $ #4 ,yf y9y /

Vice President NSIC -

Consumers Power Company TIC f 4:ff[p,g, f884g .

1945 West Parnall Road ACRS (16) 4 @

Jackson, Michigan 49201 0; , ,

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Dear Mr. Cook:

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Subject:

Request for Infomation on SER Open Items: Masonry Walls and Ultinato Containment Capacity Section 3.8.2 of the Staff's SER for Hidland Plant, Units 1 and 2, notes that infomation regarding masonry walls in seismic Category I structures represents a confirmatory issue. The Staff has reviewed your letters of Septenber 3, 1980 and April 19, 1982 and finds that additional information requested by Enclosure 1, is needed to conclude this review.

Enclosure 1 also requests an analysis to determine the ultimate capacity of the Midland containment structures. This analysis should reflect as-built conditions.

The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P.O.96-511.

Please advise our licensing project nanager of your intended response dates within seven days of receipt of this letter.

Sincerely, Original signed by Robert.L. Tedesco Robert L. Tedesco, Assistant Director for Licensing Division of Licensing j-

Enclosure:

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As stated

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OFFICIAL R$ CORD COPY

MIDLAND Mr. J. W. Cook Vice President Consumers Power Company 1945 West Parnall Road Jackson, Michigan 49201 cc: Michael I. Miller, Esq. Mr. Don van Farrowe, Chief Ronald G. Zamarin, Esq. Division of Radiological Health Alan S. Farnell, Esq. Department of Public Health Isham, Lincoln & Beale P.O. Box 33035 Suite 4200 Lansing, Michigan 48909 1 First National Plaza Chicago, Illinois 60603 William J. Scanlon, Esq.

2034 Pauline Boulevard James E. Brunner, Esq. Ann Arbor, Michigan 48103 Consumers Power Corpany 212 West Michigan Avenue U.S. Nuclear Regulatory Commission Jackson, Michigan 49201 Resident Inspectors Office Route 7 Ms. Mary Sinclair Midland, Michigan 48640 5711 Summerset Drive Midland, Michigan 48640 Ms. Barbara Stamiris 5795 N. River Stewart H. Freeman Freeland, Michigan 48623 Assistant Attorney General State of Michigan Environmental Mr. Paul A. Perry, Secretary Protection Division Consumers Power Company 720 Law Building 212 W. Michigan Avenue Lansing, Michigan 48913 Jackson, Michigan 49201 Hr. Wendell Marshall Mr. Walt Apley Route 10 c/o Mr. Max Clausen Midland, Michigan 48640 Battelle Pacific North West Labs (PNWL)

Battelle Blvd.

Mr. Roger W. Huston SIGMA IV Building Suite 220 Richland, Washington 99352 7910 Woodmont Avenue Bethesda, Maryland 20814 Mr. I. Charak, Manager NRC Assistance Project Mr. R. B. Borsum Argonne National Laboratory Nuclear Power Generation Division 9700 South Cass Avenue Babcock & Wilcox Argonne, Illinois 60439 7910 Woodmont Avenue, Suite 220 Bethe fa, Maryland 20814 James G. Keppler, Regional Administrator U.S. Nuclear Regulatory Commission, Cherry & Flynn Region III Suite 3700 799 Roosevelt Road Three First National Plaza Glen Ellyn, Illinois 60137 Chicago, Illinois 60602 Mr. Steve Gadler 2120 Carter Avenue St. Paul, Minnesota 55108

ENCLOSURE 130.0 STRUCTURAL ENGINEERING BRANCH 130.28 Perform and provide an analysis that determines the ultimate capacity (3.8.1) of the containments. The pressure-retaining capacity of localized areas as well as of the overall containment structures should be determined.

The analysis should be made on the basis of as-built conditions and the allowable material strength specified in the Code. However, if the actual material properties such as concrete cylinder compressive strength, mill test results of reinforcing steel and liner plate, strength variations indicated by mill test certificates and other uncertainties are availabe, the lower and upper bounds of the containment capacity may be established statistically.

The details of the analysis and the results should be submitted in a report form with the following identifiable information.

(1) The original design pressure, P a , as defined in the Code, (2) Calculated static pressure capacity, (3) Equivalent static pressure response calculated from dynamic pressure, (4) The associated failure mode, (5) The stress-strain relation of the liner steel and reinforcing and/or prestressing steel and the behavior of the liner under the postulated loading conditions in relation to that of the reinforcing and/or prestressing steel, (6) The criteria governing the original design and the criteria used to establish failure; (7) Analysis details and general results, and (8) Appropriate engineering drawings adequate to allow verification of modeling and evaluation of analyses employed for the con-tainment structures.

130.29 Compare the damping values used in the dynamic analysis of masonry (3.8.4) walls with the requirements of R.G. 1.61, " Damping Values for Seismic Design of Nuclear Power Plant". Explain and justify any deviations.

130.30 Your response by letter dated September 3, 1980 to question 4 (3.8.4) on dynamic analysis of masonry walls enresses the moment of inertia of partially cracked walls as:

c 3 Y t In accordance with ACI 318, this expression should be:

IC " ".,[I ; f r _1%p f1 J u J yCA Furthermore, your expression for the cracking moment is given by:

bt' t ~ T (o.efa)

This expression should be:

7 E 13 Nc' Yx Explain and justify these discrepancies.

130.31 In regards to your revised response by letter dated April 19, 1982 to (3.8.4) question 5 regarding masonry walls, discuss the following:

a. The Safety Factors used in both the wedge and stud type expansion anchors;

b. Provisions to avoid facial spalling of block walls for expansion anchors requiring a minimum embedment of 1-5/8 in.;

c. Interference between wall reinforcing and expansion anchors requiring an embedment of 4 inches or more;

d. The consideration given to the expected loss of pre-load of expansion anchors in the design of attachments to masonry walls; and

e. The testing procedures used to evaluate the effectiveness of installation procedures of expansion anchors and grouted anchors.