ML19326D043

Requests Review of Seismic Design and Analyses for Class 1 Seismic Structures,Sys,Components & Equipment Except pressure-containing Components Per Contract AT(49-5)-2667. Forwards Fsar,Vols I,Ii & Iii.W/O Encl

ML19326D043
Person / Time
Site:	Arkansas Nuclear
Issue date:	06/02/1971
From:	Case E US ATOMIC ENERGY COMMISSION (AEC)
To:	NATHAN M. NEWMARK CONSULTING ENGINEERING SERVICES
References
CON-AT(49-5)-2667 NUDOCS 8004300664
Download: ML19326D043 (3)

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JUN 2 1971 Decket No. 50-313

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Engineering Services 2

1 1114 Civil zasiaserins kildins THIS DOCUMENT CONTAINS University of I111acis

' POOR QUAUTY PAGES Urbana, Illinois 61807 g.

Gentlemen:

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- Contract No. AT(49-5)-2667 m;

Nathan M. Neumark Consulting Engineering Services is hereby requested,

~"2 persmant to the conditions of Contract No. AT(49-5)-2667, to perform the following services for the Commission concerning the' operating license review of Arkansas Power & Light Company 's Arkansas Nuclear One - Unit 1:

m 1.

Perform an everall review of the seismic design and analyses for Class I (seismic) structures, systems, components, and equipaint, other than those pressure-containing components such as pumps, valves, piping and l

vessels covered by the applicable ASMg Component Codes and ANSI Piping l

Codes, to determine if the specified seismic design criteria have been adequately and appropriately applied.

2.

Perform a review of the fellowing specific areas related to the seismic design and smalyses of Class I structures, systems, components, and i

equipment, other then these components such as pumps, valves,. piping and vessels severed by the applicable ASMg Component Codes and ANSI t

Piping Codes, to determine:

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a.

The adequacy of the seismic-system dynamic analyses which have l

been used to determine the capability of the plant to withstand I

the specified seismic inputs at the site, taking into account seil-structure interaction and coupled horizontal and vertical i

astions.

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b.

The adequacy of. seismic analyses ishich have been used to determine the capability of the' structures, systems, components, and equipment to withstand the leed,ings which employ the inputs and responses as may be derived hr the seismic-system dynamic l

analyses.

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The suitability of the specified damping factors as applied to the design of structures, systems, components, and equipment, taking l

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,t JUN 2 1971 into account the influence of the specified design strees levels which have been used usader the various seismic desip loading

'eembinations.

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d.J. The adequacy of' the design leading combinations (which include..

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- a seismic leed) and the aseeciated limits of allowebla design O

stresses winich have been used for the various construction materials of. the Claes I structures only.

e.. The adequacy of specific testing methods used, if any, in lieu of design smalyses or seismic analytical methods.

3 3.

Prepare and feraish a commentary on the items reviewed and any areas of concern within the scope 'of 1 and 2 above, including puliminary eenelusions which may serve as a basis for the final -ry conclu-siene of item 4 below.

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4.

Prepare sad furnish a " Seismic Design Consultant Report for Arkansas Nuclear One-Unit 1" eestaining a summary of the Arkamass Nuclear One-Unit 1 conclusions reached from the evaluation of the final design within the scope of 1 asad 2 above, taking into account (a) the infor-mation submitted by the applicant, (b) discussions held with ABC regulatory staff, and (c) AEC meetings with the applicant and its

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centractors in which you may have participated.

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5.

Perform a site visit of completed Class I structures, systems, com-peaants, and equipment if evaluation of specified design ':rmiss within the seepe of 1 and 2 is required or will be commensurately facilitated by inspecties.

6.

Participate, if required,. as an expert witness, within the scope l

of 1, 2, 4, and 5 above, in the event of a public hearing on the facility.

Your initial review of~ the documents enclosed should include the identifi-cation of areas of eencern and areas requiring additional information, withia-the scope of 1 and 2 above, Please advise us, at the earliest opportunity, of the resuits of this-initial review and any additional information needed se that we_ may add your information requests, as appro-priate, to these which the AEC will transmit te the applicant. Copies of. the unendments-prepared by the applicant in response of 'these AEC requests for supple===tal information will be forwarded to'you upon receipt.

Volumes I, 'II, and III of the FSAR for this facility are enclosed for

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Fons AEC-51e (Rev. 9-53) AECM 0240

• ul$ GOVERNMENT PR*fTING OFF*CE. 1,70--407-758

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JUN 2 1971 l

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All correspondence med reports as may be required to consply with this,

Work Directive for services shall be addressed to Mr. Edson G. Case,

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7en Director, Division 'of Reactor Standards, U.S. Atomic Energy 'Cosuaisoien,. ~ 3M

~ Washington, D.C.. 20545.. All'cests shall be itemised and requests for

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reimbursement shall.be submitted on a' monthly basis.' - '%

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The init'ial amount payable to your firm in order to-. perform items 1 threegh 5 of this Work Directive is $2,500; additiemal funding will be the subject.-

7 of a supplemental Work Directive. Item 6, if required, will be costed separately. You will be advised of our schedule requirements for the l

initial review, the commsatary and the final report.

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.l Reports concerning merk for others shall be made in accordsace with Article I, paragraph (d) and. Article IV of the Contract.

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.a This constitutes a Work Directive pursuant to Article 1, paragraph. (b) ~

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of Contract No. Ar(49-5)-2667. All other requirements. specified in "S-Contract No. AT(49-5)-2667 remain unchanged.

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G-l Sincerely, Od& 8 8 :e';

E. G. tm Edson G. Casa, Director Division of Reactor Standerde

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Inclosure:

Voltmes I, II sud III.

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