ML20032C925
| ML20032C925 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 10/28/1981 |
| From: | Kane W Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8111120941 | |
| Download: ML20032C925 (6) | |
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- OCT 2 81981 Docket !!o.: 50-395 APPLICANT:. South Carolina Electric & Gas Coupany FACILITY:
Virgil C. Summer huclear Station, Unit 1
SUBJECT:
Sul-flARY OF OCTOBER 9,1981 IEETING REGARDING RESERV0lR INDUCED SEISHICITY 1.
General Representatives of the staff and its consultant met with representatives of the applicant and its consultants to ciscuss reservoir-induced seismicit;y at the facility. The meeting was held at the HRC offices in Bethesda, Maryland. A list of those persons wno attended the meeting is included in the enclosure.
2.
Purpose The purpose of the meeting was to discuss the applicant's evaluation of the recent reports by consultants to the Atomic Safety & Licensing Board (ASLB) and a report subuitted by two USGS enployees in response to an inquiry by the ASLB.
3.
Discussion The applicant's evaluation of the three reports is contained in two letters from T. C. tiichols to ti. R. Denton, dated October 1, 1981 and October 8, 1981. The report of. the two USGS employees Dr.' W. Joyner and Dr. J. Flechter is contained in a Septer.her 11, 1981 letter from R. Morris to H. Grossman..
The reports of the two ASLB consultants, Dr. H. Trifunac and Dr. E. Luco are contained in their reports to the ASLB both dated September 1981. The applicant suaaarized its evaluation of the three reports concluding in general that the issues raised in the reports were caused by misinterpretation or misinformation. The applicant has not changed its positions presented to the ASLB as a result of any of the information in the reports. The applicant stated that it had not discussed the areas of disagreement with the ASLB consultants or the USGS employees but had sent then copies of their evaluation. The epplica'nt stated that USGS had installed an"accelero-neter in the free field near the one located on the dam. This occurred in uid-1980 and the applicant was not aware of this until only recently.
The presence of the second instrument uay be important in that it could -
establish wnether the acceleration due to' seismic events in the reservoir recorded by the instrument on the-dam are anplified. However, no such evaluation has been performed by the applicant to date.
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n 7-e Finally the applicant notified us that one of their consultants held discussions with USGS personnel earlier in the week.
They stated that an unprocessed film record from an October 17, 1979 event mignt result in peak accelerations in excess of those for the August 27, 1978 event. Preliminary estinates obtained by scaling suggest an dCCeieration in excess of 0.39 for this riL-2.8 event.
If this is correct it m>uld represent the largest acceleration neasured to date.
Tne appif cant stated that it is atteopting to obtain more complete information for USGS and will keep the staff advised.
We noted that this information was of the type that should be forwarded to che ASLB im.aediately. The applicant stated that it planned to docui;,ent this information in a letter to be issued not later than October 12, 1981. We stated that we would also plan to notify the ML6 of this infornation.
W. F. Kane, Project Manager Licensing Brancn No. 1 Division of Licensing cc: see next page SS e previous yellow.
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, Finally the applicant notified us that one of their consultants held discussions' with USGS personnel earlier in the week. They stated tnat an unprocessed film record from an October 17. 1979 event m Jht result in peak accelerations in excess of those for the August /'an.
1978 event. Preliminary estinaates obtained by scaling suggeg
, acceleration in excess.of 0.3g for this ML=2.8 event.
If 41's is cortect it would represent the largest acceleration measured _ to d te. The
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- applicant stated that it is attempting to obtain more c plete information for USGS and will keep the staff advised.
We noted that this information was of the type thpt snould be forwarded to the ASLB immediately. The-applicant stated hat it planned to document this information in a letter to be is)ued not later-than s
4 October 12.19til. We stated that we would a~lso plan to notify the ASLB of this information.
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,,e W. F. Kane, Project Manager f
Licensing Branch No. l' Division of Licensing
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- USGPO 1986
s Mr. T. C.'.Nichols, Jr.
Vice President-& Group Executive L
Nuclear Operations South-Carolina Electric & Gas Company P. O. Box 764 Columbia, South, Carolina-29218 cc: Mr. Henry Cyrus.
Senior Vice_ President South Carolina Public Service Authority
.223 North Live Oak Drive-Moncks Corner, South Carolina 29461 J. B. Knotts,ibermanJr., Esq.
Debevoise 8 L 1200 17th Street, N. W.
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Washington, D. C.
20036 Mr. Mark B. Whitaker, Jr.
Group Manager - Nuclear Engineering & Licensing South Carolina Electric & Gas Company P. O. Box 764 Columbia, South Carolina 29218 Mr. Brett Allen Bursey Route 1, Box 93C Little Mountain, South Carolina 29076 Resident Inspector / Summer NPS c/o U. S. NRC Route 1, Box 64 Jenkinsville, South Carolina 29065 Dr. John Ruoff Post Office Box 96 Jenkinsville, South Carolina 29065' i
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LIST OF ATTENDEES l
NRC Staff South Carolina University W. Kane P. Talwani R. Jackson L. Reiter URS/Blume P. Sobel R. McMullen J. Blume J. Kimball M. Sommerville A. Murphy D. Thaveri J. Chen.
A. Ibrahim Debevoise & Lieberman S. Goldberg M. Young J. Knotts R. Rawson J. Sanford Los Alamos Scientific Laboratories C. Newton South Carolina Electric & Gas Company M. Whitaker R. Whorton R. Mahan Ertec R. McGuire Penn State University S. Alexander St. Louis University
- 0. Nuttli Dames & Moore J. McWhorter W. Smith Gilbert Associates C. Chen
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MEETING
SUMMARY
DISTR _IBUTION
~ Docket: File n G. Lear NRC PDR'~
OCT 2 b 1981 W. Johnston Local PDR S. Pawlicki TIC /NSIC/ Tera V. Benaroya s
N. Hughes Z. Rosztoczy 4
LB#1 Reading W. Haass k
H. Denton D. Muller 8
E. Case R. Ballard 3
D. Eisenhut W. Regan 5
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R. Purple P.. Ma ttson,j B. J. Youngblood P. Check C
F. Congel E
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A. Schwencer
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F. Miraglia
- 0. Parr J. Miller F. Rosa
, f i f. t G. Lainas W. Butler R. Vollmer W. Kreger J. P. Knight R. Houston R. Bosnak F. Schauer L. Rubenstein R. E. Jackson T. Speis WKane M. Srinivasan Project Manager Attorney, OELD J. Stolz M. Rushbrook S. Hanauer 0IE (3)
W. Gammill ACRS (16)
T. Murley R. Tedesco F. Schroeder D.'Skovholt M. Ernst NRC
Participants:
R. Baer RJackson, LReiter, PSobel K. Kn RMcMullen, JKimball, AMurphy G. Knighton JChen, Albrahim, SGoldberg A. Thadani MYoung and RRawson D. Tondi
-J, Kramer D, Vassallo P, Collins D. Ziemann bec: Applicant & Service List f
_.