ML19282C319
| ML19282C319 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 03/06/1979 |
| From: | Stello V Office of Nuclear Reactor Regulation |
| To: | Drey L AFFILIATION NOT ASSIGNED |
| References | |
| TAC-07551, TAC-7551, NUDOCS 7903270005 | |
| Download: ML19282C319 (10) | |
See also: IR 05000344/1978015
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UNITED STATES
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NUCLEAR REGULATORY COMMISSloN
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WASHlNGTON, D. C. 20555
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March 6, 1979
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Mrs. Leo A. Drey
515 West Point Avenue
University City, MO 63130
Dear Mrs. Drey:
This is in response to your letter of January 26, 1979, to Mr..R. H.
Engelken addressing those questions not answered by Mr. J. Hanchett
in his letter to you of February 12, 1979.
1.
The design error in the Control Building was discovered during
an investigation of the feasibility of installing a security
window in a Control Building wall.
2.
The NRC staff met with PGE several tirr9 after disclosure of
the design error and conducted a special inspection at
Bechtel Power Corporation headquarters.
The details of the
error are discussed in the enclosed inspection report dated
August 25, 1978.
3.
The design errors and related safety considerations were
reviewed by the Office of Nuclear Reactor Regulation.
4.
Bechtel and Portland General Electric ' Company (PGE) reviewed
the other safety-related structures and confir ed that they
are built properly.
5.
PGE is proposing to restore the originally intended earth-
quake res -tance by adding new walls across an existing
railroad bay and by the addition of a thick steel plate to
the outside surfacc of an existing wall.
Thus, existing
shear walls will not be dismantled under this plan.
The
proposal is under NRC staff review and is not approved at
this time.
Further public hearings will also be required, and
the decision as to the adequacy and safety of the modification
will be made by the Atomic Safety and Licensing Board.
Sincerely,
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"ictor Stel lc,z. ;r,. . Di rector
Division of Cre atice
eactorr
Office of luclear :.eictor Regulation
Enclosure:
Ins:ection Repor:~d:d. 3/25/73
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Docket No. 50-344
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Portland General Electric Company
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121 S.'W. Salr.icn Street.
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Portland, Oregon
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Attention:
Mr. Charles Goodwin, Jr.
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Assistant Vice President
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Gentlemen:
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Subject:
NRC Inspection of Bechtel Power Corporation Trojan Nuclear
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Project Conducted August 16-18, 1978.
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ihis refers to the special .. inspection conducted by Mr. D. F. Kirsch and
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T. W. Hutson of this office on August 16-18, 1978 of activities involving
the design of the Trojan Nuclear Power Plant Control Building chear walls,
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and to the discussion of our findings held by Mr. Kirsch with Mr. Greenwood
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and members of the Bechtel staff at the conclusion or the inspection.
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The inspection was an examination of (a) the implementation of the Sechtel
Power Corporation 1970-71 cuality assurance program and procedures with
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regard to the Trojan Nuclear Project civil / structural engineering design
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control / verification and (2) the effort devoted to the engine-ing re-
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exacination of Cate';ory I stru:tures related to the Project.
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thane areas, the inspection consisted of selective exarninations of
procedures and representative . records, interviews with personnel, and
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cbservations by the inspector.
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No items of noncompliance with NRC requiremerits were identified within
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the scope of this inspection.
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In accordance with Section 2.790 of the NRC's " Rules of Practice,"
Part 2, Title 10, code of Feceral Regulations, a copy of this letter and
the enclosed inspection report will be placed in tne NRC's Public
C:cument RLom.
If this recort centains any information that ycu beitava
to be pre;rietary, it. is r.2:essary that you submit a wri::cn ap:licati:-
to thi: offi:2, wit':in 20 days of the ca:e of this letter, rs'.;uesti .
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that such informatien be withheid frc: public disciosure.
The a;;iica-
tion must -include a full statement of the reascns why it is claimac tha:
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