ML19259B293

Summary of a 781219 Meeting Re Mod of Control Bldg.W/Encl List of Attendees,Testing Program Results,Existing Structure Design,Proposed Mods & Topical Rept on Strengthening of Control Bldg

ML19259B293
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	12/28/1978
From:	Trammell C Office of Nuclear Reactor Regulation
To:	Case E, Harold Denton, Stello V Office of Nuclear Reactor Regulation
References
NUDOCS 7901260014
Download: ML19259B293 (25)

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UNITED STATES

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Portland General Electric Company (PGE)

FACILITY:

Trojan Nuclear Plant SUtHARY OF MEETING HELD ON DECEMBER 19, 1978 TO DISCUSS MODIFICATION OF THE TROJAN CONTROL BUILDING On December 19, 1978, the NRC staff met with representatives of Portland General Electric Company (PGE) and Bechtel to discuss future modification of the Trojan Control Building. All infor-mation furnished was classified by PGE/Bechtel as preliminary at this time.

A list of attendees is attached (Attachment 1).

Highlights of the meeting are summarized below.

The meeting was devoted to four subjects:

preliminary test results of representative Trojan Control Building shear wall specimens; the proposed Control Building modification; a report to be submitted describing the proposed modification; and security aspects during the modification.

A test program using representative shear wall specimens is currently underway, and will be completed by the end of January 1979. The purpose of this program is to establish the material properties to be used for the existing Control Building shear walls as input to the final building modification.

Results achieved thus far indicate that the Modified Schneider Criteria (used for the interim operation evaluation) are conservative, and do not invalidate assumptions made for this evaluation. Three tests remain to be conducted. Attachment 2 summarizes the test results achieved to date.

The proposed modification will consist of re-routing the railroad tracks which currently pass through the north end of the Control Building and (1) building two new shear walls of reinforce.1 concrete across the railroad bay from el. 45' to el. 77', and (2) adding a 3-inch-thick steel plate to the outside of the Control Building west wall from el. 65' to el. 93'. This will stiffen the Control Building in the N-S direction, and is expected to restore the OBE capacity of the Control / Auxiliary / Fuel Building complex 7901260Old P

Meeting Summary for Trojan Control Building December 28, 1978 to the licensed value of 0.15g. The modification is expected to raise the N-S building complex frequency (first mode) from 6.8 HZ to about 7.4 H.

7 All Class I equipment, systems and components will be invetigated and appropriately qualified to FSAR criteria (OBE and SSE) as part of the modification.

If the modification causes an upward frequency shift wnich causes a change in floor response spectra outside of current spectra for safe-shutdown systems and systems required to maintain off-site doses to within 10 CFR 100 guide-lines for the SSE, these systems would be modified before the new walls were constructed, thereby maintaining their seismic (SSE) qualification.

Although preliminary, PGE stated that it appeared that the modification could be completed without restrictions on plant operation.

No preparatory work is planned, although some unrelated modifications (fire protection, security) may go forward. PGE will keep the NRC informed of such work.

The Reactor Safeguards Licensing Branch will be visiting the Trojan site on Jan ary 4,1979, and will familiarize themselves with security aspects ins slved with the modification.

The final meeting subject was a preview of the modification report Table of Contents, and a discussion of the information PGE plans to submit to NRC.

See Attachment 4.

This report is scheduled to be submitted about mid-January 1979, with a supplement in mid-February 1979 describing the final three wall specimen tests.

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Charles M. Trammell, Project Manager Operating Reactors Branch #1 Division of Operating Reactors Attachments:

1.

List of Attendees 2.

Testing Program Results s

3.

Modification 4.

Table of Contents -

Topical Report

Meeting Sumary for Trojan Control Building Docket File NRC PDR Local PDR ORB 1 Reading NRR Reading H. Denton E. Case V. Stello D. Eisenhut B. Grimes D. Davis D. Ziemann P. Check G. Lainas A. Schwencer R. Reid T. Ippolito V. Noonan J. McGough Project Manager OELD OI&E(3)

ACRS (16)

C. Parrish NRC Participants TERA J. R. Buchanan Licensee

Meeting Swamary for Trojan Control Building cc: Mr. H. H. Phillips Ms. Nina Bell Portland General Electric Company 632 SE 18th 121 SW Salmon Street Portland, Oregon 97214 Portland, Oregon 97204 Mr. Stephen M. Willingham Warren Hastings, Esquire 555 N. Tomahawk Drive Counsel for Portland General Portland, Oregon 97217 Electric Company 121 SW Salmon Street Mr. Eugene Rosolie Portland, Oregon 97204 Coalition for Safe Power 215 SE 9th Avenue Mr. J. L. Frewing, Manager Portland, Oregon 97214 Generation Licensing a.nd Analysis Portland General Electric Company John H. Socolofsky 121 SW Salmon Street Oregon Department of Energy and Portland, Oregon 97204 Oregon Public Utility Comissioner Department of Justice Columbia County Courthouse State Office Builsing Law Library, Circuity Court Room Salem, Oregon St. Helens, Oregon 97501 Maurice Axelrad, Esq.

Director, Oregon Department Lowenstein, Newman, Reis of Energy Axelrad and Toll Labor and Industries Building, Rm. 111 Suite 1214 Salem, Oregon 97310 1025 Connecticut Avenue, NW Washington, D. C.

20036 Dr. Hugh C. Paxton Mr. David B. McCoy 1220 41st Street 348 Hussey Lane Los Alamos, New Mexico 87544 Grants Pass, Oregon 97526 Marshall E. Miller, Esq., Chairman Ms. C. Gail Parson Atomic Safety and Licensing Board f0rt 0

U. S. Nuclear Regulatory Commission n

regon 97526 Washington, D. C.

20555 William Kinsey, Esq.

Dr. Kenneth A. McCollom, Dean 1002 NE Holladay Division of Engineering, Partland, Oregon 97232 Architecture & Technology Oklahoma State University Stillwater, Oklahoma 74074 Mr. John A. Kullberg Route One Box 250Q Sauvie Island, Oregon 97231

Meeting Summary for Trojan Control Building cc: Gregory Kafoury, Esq.

Counsel for Columbia Environmental Council 202 Oregon Pioneer Building 320 SW Stark Street Portland, Oregon 97204 Robert M. Johnson, Esq.

Assistant Attorney General 100 State Office Building Salem, Oregon Atomic Safety and Licensing Board Panel U. S. Nuclear Regulatory Commission Washington, D. C.

20555 Atomic Safety and Licensing Appeal Board Panel U. S. Nuclear Regulatory Commission Washington, D. C.

20555 Docketing and Service Section Office of the Secretary U. S. Nuclear Regulatory Commission Washington, D. C.

20555

ATTACHMENT 1 LIST OF ATTENDEES TROJAN CONTROL BUILDING MEETING DECEMBER 19, 1978 PGE W. Lindblad D. Broehl T. Bushnell R. Johnson L. Erickson NRC C. Tramell K. Herring V. Noonan G. Arndt T. Cheng J. Gray R. Clark K. Wichman BECHTEL J. O' Leary W. White B. Sarkar M. Celebi F. Meyer R. Anderson LOWENSTEIN, NEWMAN, REIS, AXELRAD AND TOLL M. Axelrad SHAW, PITTMAN, POTTS AND TROWBRIDGE E. Blake B. Churchill

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k hCbbof k ORAFT TOPICAL REPQRI_

00 STRENGTHENING OF THE TROJAN CONTROL BUILDING 1

INTRODUCTION 1.1 PURPOSE 1.2

SUMMARY

1.3 ORGANIZATION 1.4 DEFINITIONS OF THE NOTATIONS USED

~

2 BACKGROUND 2.1 CONTROL BUILDING SEIS:41C DESIGN 2.2 EVALUATION OF THE Ex! STING BUILDING 3

GENERAL DESIGN 3.1 CRITERIA 3.2 CONTROL BUILDING MODIFICATIONS 3.3 SEISMIC ANALYSIS 4

SAFETY EVALUATION 4.1 SAFETY EVALUATION (STRUCTURAL) 4.2 OPERATIONAL CONSIDERATIONS

5 CONSTRUCTION PROGRAM D' R A F T 5.1 CONSTRUCTION SEQUENCE AND PROCEDURES 5.2 BECHTEL QUALITY. CONTROL PROGRAM 5.3 BECHTEL--PGE INTERFACE 5.4 SCHEDULE 6

0UALITY ASSURANCE 6.1 PGE QUALITY ASSURANCE 6.2 BECHTEL QUALITY ASSURANCE APPENDIX A:

SHEAR WALL SPECIMEN IESTING PROGRAM APPENDIX 3:

SEISMIC QUALIFICATION OF EQUIPMENT COMPONENTS AND PIPING

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