ML20126M152

Summary of 850619-20 Meetings W/Util & S&W in Boston,Ma Re Confirmatory Issue on soil-structure Interaction (SSI) & Auditing SSI-related Calculations.Response Spectra Plots Requested from Applicant.Meeting Handouts Encl

ML20126M152
Person / Time
Site:	Beaver Valley
Issue date:	07/08/1985
From:	Singh B Office of Nuclear Reactor Regulation
To:	Office of Nuclear Reactor Regulation
References
NUDOCS 8508010255
Download: ML20126M152 (18)

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UNITED STATES NUCLEAR REGULATORY COMMISSION j

j WASHING TON, D. C. 20555 E

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Docket No. 50-412 APPLICANT: Duquesne Light Company (DLC)

FACILITY:

Beaver Vallley Power Station, Unit 2 1

i

SUBJECT:

Meeting Sumary - Soil Structure Interaction (SSI) Analysis On June 19 and 20, 1985, the NRC staff and its consultants met with the appli-cants and its representatives at the Sone & Webster Office in Boston to discuss the confirmatory issue on'the soil-structure interaction and audit the SSI related calcuations. The meeting notice and the attendance roster are enclosed (Enclosures 1 and 2 respectively).

i The applicant made a brief presentation on the site specific spectrum study (Enclosure 3) and the finite element SSI analysis using the PLAXLY and FLUSH codes. A somewhat more detailed presentation on the 3-step SSI analysis was also made. Based on the presentations, the staff and its consultants selected several specific calculations for audit review. During the review, the applicant and its representatives were available for discussions and clarifi-j cations as necessary.

During this meeting, the following specific infonnation was requested from the applicant:

(a) A plot showing comparison of various response spectra. These. response spectras were: (1) mean and mean plus one standard deviation (MJD) site specific spectra at foundation level; (2) Translational spectra after kinematic instruction (from KINACT output); (3) response spectra from FLUSH at free-filed in foundation level; and (4) Beaver Valley 2 broad based design spectra.

All of the above spectra correspond to 5% damping. Correspondingly digitized data were also to be provided.

i' (b) A response spectra plot (with associated digitized data for the basemat level of containment containing the following spectra 5%

damping): (1) Beaver Valley 2 design envelope; (2) translatforal spectrum from 3-step analysis; and (3) site-specific MSD spectra.

The applicant agreed to provide NRC staff the schedule for the above submittals at a later date.

The overall impressions formed and expressed at the meeting by the staff l

was that pending the satisfactory completion of the review of the site-specific spectra and barring any unforeseen information, the SSI analysis for 8500010255 850700 l

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• Beaver Valley 2 appears to be adequate and consistent with the intent of the NRC staff acceptance criteria. The staff will report its final conclusions regarding this issue in the forthcoming SER.

/s B. K. Singh, Project MANAGER Licensing Branch No. 3 4

Division of Licensing

Enclosures:

As stated 1

cc: See next page t

DISTRIBUITON O eeteLFile D

NRC PDR 4

Local PDR PRC System NSIC 4

LB#3 Reading Attorney, OELD GKnighton BKSingh JLee i

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DL:LBf3-BKSingh/es (4 nighton 7/ ?/85 T/f/85 4

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j Beaver Valley 2 appears to be adequate and consistent with the intent of the NRC staff acceptance criteria. The staff will report its final conclusions regarding this issue in the forthcoming SER.

Y B. K. Singh, Project MANAGER Licensing Branch No. 3 Division of Licensing

Enclosures:

As stated cc: See next page d

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i Duquesne Light Company Beaver Valley 2 Power Station i

CC:

Gerald Charnoff, Esq.

Mr. R. E. Martin, Manager Engineering l

Jay E. Silberg, Esq.

Beaver Valley Two Project i

Shaw, Pittman, Potts & Trowbridge Duquesne Light Company

}

1800 M Street, N.W.

Robinson Plaza Building No. 2 Suite 110 j

Washington, DC 20036 PA Route 60 Pittsburgh, Pennsylvania 15205 Mr. C. W. Ewing, Quality Assurance Zori Ferkin i

Manager Assistant Counsel Quality Assurance Department Governor Energy Council Duquesne Light Company 1625 N. Front Street P. O. Box 186 Harrisburg, PA 15105 Shippingport, Pennsylvania 15077 Mr. John J. Carey Vice President, Nuclear Duquesne Light Company Director, Pennsylvania Emergency P. O. Box 4 Management Agency Shippingport, Pennsylvania 15077 Room B-151 Transportation & Safety Building Harrisburg, Pennsylvania 17120 l

Mr. T. J. Lex Mr. Thomas Gerusky Westinghouse Electric Corporation Bureau of Radiation Protection Power Systems PA Department of Environmental P. O. Box 355 Resources Pittsburgh, Pennsylvania 15230 P. O. Box 2063

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Harrisburg, Pennsylvania 17120 4

Mr. P. RaySircar Stone & Webster Engineering Corporation BVPS-2 Records Management Supervisor P. O. Box 2325 Duquesne Light Company Boston, Massachusetts 02107 Post Office Box 4 Shippingport, Pennsylvania 15077 1

Mr. Glenn Walton U. S. NRC John A. Lee, Esq.

P. O. 181 Duquesne Light Company Shippingport, Pennsylvania 15077 1 0xford Centre 301 Grant Street Mr. Thomas E. Murley, Regional Admin.

Pittsburgh, Pennsylvania 15279 U. S. NRC, Region I 631 Park Avenue King of Prussia, Pennsylvania 15229

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Duquesne Light Company

- Beaver Valley 2 Power Station cc:

Mr. E. F. Kurtz, Jr., Manager Regulatory Affairs Beaver Valley Two Project Duquesne Light Company Robinson Plaza Buidling No. 2 Suite #210 PA Route 60 Pittsburgh, Pennsylvania 15205 i

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UNITED STATES y

g NUCLEAR REGULATORY COMMISSION 7.

?j WASHINGTON, D. C. 20555

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Docket No.: 50-412 MEMORANDUM FOR: George W. Knighton, Chief Licensing Branch No. 3 Division of Licensing FROM:

B. K. Singh, Project Manager Licensing Branch No. 3 Division of Licensing

SUBJECT:

FORTHCOMING MEETIN'G BETWEEN THE NRC AND DUQUESNE LIGHT COMPANY DATE & TIME:

June 19, 1985 1:00 p.m. - 4:30 p.m.

June 20, 1985 9:00 a.m. - 4:00 p.m.

LOCATION:

Stone &. Webster Engineering Corporation 245 Sumer Street Boston, Massachusets PURPOSE:

To discuss soil structure interation issue PARTICIPANTS:

NRC J. Knight, G. Lear, B. K. Singh, et al.

Duquesne Light Company E. Kurtz, E. Eilmann, J. O'Neil, et al.

Stone & Webster J. Sutton, et al.

B. K. Singh, Project Manager Licensing Branch No. 3 Division of Licensing cc: See next page O r" r/ ? m A n/m r) r/

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BEAVER VALLEY POWER STATION - UNIT N0. 2 DUQUESNE LIGHT COMPANY S0IL STRUCTURE INTERACTION ANALYSIS AUDIT AGEhTA i

Date Item June 19, 1985 from 9:30 am 1.

Objective & Purposes of Audit (NRC) 2.

Brief Overview of Site Specific Spectra Study and Results (Applicant) 3.

Chronology of SSI Analysis. for BV2 Brief Description of Various Analysis (Applicant) 4.

Detailed Description of 3-step Analysis (Applicant):

Assump-

tions, Methodology, Results; ete:

Detailed audit of calculations and computer input / output of the following items:

1.

Input Motion & Input Parameters (soil properties, site characteristics, structural properties,ete:)

t 2.

Brief Review of Plaxly/ Flush input & results-l June 20, 1985 Continuation of Audit i

1.

Kinematic Interaction (KINACT) 2.

Impedance Function (REFUhT

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EMBED) l 3.

Overall SSI Analysis (FRIDAY) 4.

Site Specific Spectra 1

5.

Staff Caucus 6.

Exit, Conclusions 4

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