ML13303A672

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Forwards Memo Summarizing 781201 Meeting to Discuss Dewatering Well Cavities
ML13303A672
Person / Time
Site: San Onofre  
Issue date: 12/19/1978
From: Rood H
Office of Nuclear Reactor Regulation
To:
Office of Nuclear Reactor Regulation
References
NUDOCS 7903060560
Download: ML13303A672 (8)


Text

FEB 2 1979 DOCKET NOS. 5O361 362 APPLICANTS. SOUTHERN CALIFORNIA EDISON -COMPANY (SCE)

SAN DIEGO GAS AND ELECTRIC COMPANY (SDG&E)

FACILITY:

SAN ONOFRE UNITS 2 AND 3

SUBJECT:

SUMMARY

OF MEETING TO DISCUSS DEWATERING WELL CAVITIES Enclosed

-a sumnary of a meeting he'd on Deceber 1, 1978 to discuss the above subject.

O' al Sig ned by H. Rood Light Water Reactors

-Branch No. 2 Division of Project Manageaent

Enclosure:

As Stated ecs w/enclosure See next pages.

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2 4 ue9v N NP T GOI.7-79 NRC FORM 318 (9-76)- NRCM. 0246 U) S. GOVERNMENT PRINTING OFFICif 1976 - eae&oai

Meeting Summary Docket File J. Knight NRC PDR S. Hanauer Local PDR R. Tedesco TIC R. Bosnak NRR Reading S. Pawlicki LWR #2 File F. Schauer E. Case K. Kniel D. Punch T. Novak R. S. Boyd Z. Rosztoczy D. F. Ross W. Butler D. B. Vassallo V. Benaroya D. Skovholt R. Satterfield W. Gammill V. Moore J. Stolz M. Ernst R. Baer F. Rosa

0. Parr R. Denise S. Varga EP Branch Chief C. Heltemes G. Chipman W. Haass J. Collins R. Houston W. Kreger L. Crocker G. Lear
p. Crutchfield B. Youngblood F. J. Williams L. Hulman R. q, Mattqqn NRC Partigippnts:

R. DeYoung Project Manager - H. Rpod Attorney, ELD J, Lee

. RS(16)

R. Denise L. Rubenstein

UNITED STATES 0c NUCIEAR REGULATORY COMMISSION' WASHINGTON, D. C. 20555 DOCKET NOS. 50-361/50-362 APPLICANTS:

SOUTHERN CALIFORNIA EDISON COMPANY (SCE)

SAN DIEGO GAS AND ELECTRIC COMPANY (SDG&E)

FACILITY:

SAN ONOFRE UNITS 2 AND 3

SUBJECT:

SUMMARY

OF MEETING TO DISCUSS DEWATERING WELL CAVITIES Enclosed is a summary of a meeting held on December 1, 1978 to discuss the above subject.

H. Rood Light Water Reactors Branch No. 2 Division of Project Management

Enclosure:

As Stated cqcs w/enclosure; See next pages

Mr. James H. Drake Vice President Southern California Edison Company 2244 Walnut Grove Avenue P 0. Box 800 Rosemead, California 91770 Mr. B. W. Gilman Senior Vice President - Operations San Diego Gas and Electric Company 101 Ash Street P. 0. Box 1831 San Diego, California 92112 cc:

Charles R. Kocher, Esq.

James A. Beoletto, Esq.

Southern California Edison Company 2244 Walnut Grove Avenue P. 0. Box 800 Rosemead, California 91770 Chickering and Gregory ATTN:

David R. Pigott, Esq.

Counsel for San Diego Gas

& Electric Company and Southern California Edison Company Three Embarcadero Center, 23rd Floor San Francisco, California 94112 Mr. Kenneth E. Carr City Manager City of San Clemente 100 Avenido Presidio San Clemente, California 92672 Alan R. Watts, Esq.

Rourke & Woodruff 1055 North Main Street Suite 1020 Santa Ana, California 92701 Lawrpnce Q. Garcia, Esq.

California Public Utilities Commission 5066 State Building San Francisco California 94102

Mr. James H. Drake Mr. B. W. Gilman cc:

Mr. R. W. DeVane, Jr.

Combustion Engineering, Inc.

1000 Prospect Hill Road Windsor, Connecticut 06095 Mr. P. Dragolovich Bechtel Power Corporation P. 0. Box 60860, Terminal Annex Los Angeles, California 90060 Mr. Mark Medford Southern California Edison Company 2244 Walnut Grove Avenue P. 0. Box 800 Rosemead, California 91770 Henry Peters San Diego Gas & Electric Company Post Office Box 1831 San Diego, California 92112 Ms. Lyn Harris Hicks Advocate for GUARD 3908 Calle Ariana San Clemente, California 92672 Richard J. Wharton, Esq.

4655 Cass Street, Suite 304 San Diego, California 92109 Phyllis M. Gallagher, Esq.

Suite 220 615 Civic Center Drive West Santa Ana, California 92701 Mr. Robert J. Pate United States Nuclear Regulatory Commission P. 0. Box 4167 San Clemente, California 92672

PIt EG UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 DEC 19 1978 MEMORANDUM FOR:

J. Carl Stepp, Chief Geosciences Branch, DSE THRU:

L. W. Heller, Leade Geotechnical Engin n

ection Geosciences Branc DSE FROM:

John T. Greeves, Geotechnical Engineer Geotechnical Engineering Section Geosciences Branch, DSE

SUBJECT:

SUMMARY

OF MEETING TO DISCUSS.DEWATERING WELL CAVITIES -

SAN ONOFRE NUCLEAR STATION, DOCKET NOS. 50-361/362 On Friday December 1, 1978, I met with representatives of Southern California Edison (SCE), thqi consultant Woodwqd-Clyde and Bechtel Power Corporation to discuss the status of the dewatering well cavities. The meeting was held in Bechtel's San Francisco office anq a list of attendees is enclosed.

In summary, Wells 1, 2, 3A, and 9 have been filled with concrqte and no evidence of cavities was encountered. Demobilization work at Well 8 is complete and has been described in the August, 1978 report on Well 8. Recent investigative work on Wells 3, 4, 5, 6 and 7 was reviewed during the meeting.

Most of the discussion centered around the crpss hole seismic survey procedure for cavity detection. This technique has been used at Well 3 and the data from the cross hole seismic survey has been used to evaluate this procedure for cavity detection. The analysis of the data indicates that the wave form and the arrival of the P-wave can be used to detect cavities. In addition to Well 3, Wells 4, 5 and 10 will be investigated with this technique.

J. Carl Stepp 2

EC 1 978 Preliminary profiles and contour maps of the Well 6 investigation were presented and discussed. Documentation of the exploration groting program at Well 6 is in preparation and will be submitted in January. Buried utility ducts near Well 7 have caused problems with drilling exploration holes. A shallow excavation was made to expose the utilities and avoid this problem. The exploration grouting program for Well 7 should be completed by the end of December.

John T. Greeves, Geotechnical Engineer Geotechnical Engineering Section Geosciences Branch Division of Site Safety and Environmental Analysis

Enclosure:

As stated cc: w/enclosure.

R. Denise D. Vassallo K. Kniel I. Hulman W. Bivins L. eller H. Rood R. Jackson A. Cardone L. Knupple, C/E PDR Local PDR ACRS (18)

J. Knight

Mepting December 1, 1978 SONGS 2 & 3 Dowatering Well Investigatiqn Attendees prganization D. B. Schone SCE J. K. Yann SCE L. G. Hersh BPC J. A. Barneich WCC R. D. Hinkle SCE H. S. Smith SCE J. Gallerani BPC R. L. Plodnikar DPC A. B. Arnold BPC W. Ferris SPC J. T. Geees NRC