ML20126D970
| ML20126D970 | |
| Person / Time | |
|---|---|
| Site: | Summer, 05000000 |
| Issue date: | 03/03/1982 |
| From: | Vollmer R Office of Nuclear Reactor Regulation |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20126D803 | List: |
| References | |
| FOIA-84-430 NUDOCS 8506150257 | |
| Download: ML20126D970 (2) | |
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'c UNITED STATES .
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NUCLEAR REGULATORY COMMISSION E- WAsHWGTON, D. C. 20555 y*a 1 1
MAR 0 3 icg2 MEMORANDUM FOR: Darrell G. Eisenhut, Director Division of Licensing
.FROM: Richard H. Vollmer, Director Division of Engineering
SUBJECT:
RECOMMENDATION OF ASLB BOARD NOTIFICATION ITEM -
POSSIBLE CHANGE OF POSITION BY U. S. GEOLOGICAL SURVEY ON THE LOCALIZATION OF THE 1886 CHARLESTON EARTHQUAKE -
VIRGIL C. SUMMER NUCLEAR PLANT SITE The Extreme External Phenomena Subcommittee of the ACRS sponsored a two day meeting (Jan. 28-29, 1982) to hear presentations by prominent earth scientists throughout the U. S. who are engaged'in seismic and geologic research. 'During
- the. seminar much time.was spent discussing the geology and seismicity of the Charleston, South Carolina region. In_ past licensing decisions, the NRC has assumed, based, primarily on recommendations from the U. S. Geological Survey
.(USGS), that the relatively high seismicity in the Charleston, 'S.C. area, including the 1886 Intensity X Charleston Earthquake. would not recur anywhere but the Charleston area.
Geologic and seismic research, funded by the NRC and carried out by the USGS.- '
has been ongoing in the Charleston area since 1973. In reviewing the V. C. Summer OL SAR, the NRC staff and the USGS considered all. of the information available at that. time and reaffirmed our original CP SER conclusion. 1
~
No significant riew information was presented at the ACRS Subcommittee meeting that was not consid.ered in the Sumer evaluation, but the USGS stated .that it was reviewing-.its position on the Charleston earthquake. The.USGS review could result in one of the following three positions or some other alternative:
(1) A Charleston-type event could only occur in the Charleston area - a recon-firmation of their past position; (2) A Charleston-type event is more likely to occur at Charleston than elsewhere, but is not unique to the Charleston area; (3) A Charleston-type event could occur throughout the eastern _ Seaboard as there is nothing unique to the Charleston area.
c The NRC still supports its position stated in the V. C. Sunnee SER pending
. any- new position statement by the 11" which we expect to receive in the future.
, 8506150257 B50228 PDR FOIA BELL 84 -430 PDR _
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Darrell G. Eisenhut MAR 0 3 1982 k more detailed discussion of the NRC staff position on this matter is
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- presented in Commission Paper (SECY-82-53), a copy of which is attached.
We will notify you immediately upon receipt of the USGS position. Since
. this issue appears to meet the guidelines of Office Letter No.19, we recommend that'you consider notifying the ASLB for the Summer site of this .
new information.
, & Yrv-Richard H. Vollmer, Director Division of Engineering
Enclosure:
As st'ated
-'cc 'w/ encl:
H..Denton .
J. Knight .
R. Tedesco A. Schwencer -
R. Jackson '
S.:Brocoum' ,
L. Reiter- -
- S. Goldberg
. W. Kane R.-McMullen P. Sobel E. Case .
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February 5. 1982
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SECY-82-53 POLICY ISSUE .
(Inform,ation)
FOR: The Commissioners FROM:- ' Executive Director'for Operations -
SUBJECT:
POSSIBLE RELOCATION OF DESIGN CONTROLLING EARTHQUAKES IN THE EASTERN U.S. ,
PURPhSE:' To provide the Commissi6n'ers pith 16.f6rmation ,
". relating to- (1)'possible modification of the.
U.S. Geological Survey position on the association - ,
of the 1886 Charleston, S.C. earthquake with
-geologic structure, and (2-y tiie~: r.e'c,55t earthquakes.
in New Brunswick, Canada. .
'DISCUSSIbN: In the licensing of facilities in the Sout'heastern -
U.S., the NRC has maintained the position, based on
~
the advice of the U.S. Geological Survey (USGS), that any reoccurrence of the 1886 Charleston, S.C. earthquake
-e (Modified Mercalli Intensity (MMI) X, estimated
- Magnitude about 7) Would be ' confined to .the Charleston area. .That is, the Charleston earthquake -is assumed
- to be associated with a. geologic structure.in the
. Charleston area. Nuclear power plants in the region .
east of the Appalachian Mountains are, therefore, '
. usually controlled in their seismic d,esign, according ,
to Appendix A to.10 CFR Part 100, by the maximum
- historical earthquake not associated with a geologic ,.. ,,
structure. This controlling
~
ear.thquake is typically Since1974,tT61R?,has an MMI VII or VIII.
funded an extensive research' project in the Charleston '
area to gain further information on .the causative mechanism of this event. ,
On January 28 and 29, the Extreme External Phenomenon
- Succommittee of the ACRS convened a meeting of expert .
a-professionals in-the geosciences to obtain an overview of the state of knowledge and future NRC research needs. During that meeting, we were informed by the .
Contact:
R. Vollme~r, .
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USGS that they had . formed a working group to reassess the validity of their position on the
' Charleston earthquake. 'They indicated that their tentative position concluded that=the reoccurrence of a Charleston-type earthquake should not be co.n-
, sidered unique to the Charleston area. It was further indicated their recommendation would be -
forwarded to the U3GS Director. in approximately- -
one month and that a policy decision on the treatment of the Charleston earthquake would be made at the Director's level.
,. Any major modification of the former USGS position could have significant impact on many Eastern US nuclear plant sites because Appendix A to 10 CFR' part 100 could require an Parthquake of this type,
- with its'resulting high ground motion, to be _.
, assumed to occur at any location. '
A meeting.between the.EDO and the Director USGS, on licensing issues ~is planned for the-near f.uture.
Further information may be available at that tide.
7 New Brunswick, Canada, Earthouakes
'On January 9-11 1982 ' t-series of earthquakes
,, occurred in New . Brunswick; Canada. - The . largest of -
these events was a Magnitude 5.7: earthquake which occurred on January 9,1982. Because of its remote ,
location, no damage was associated with this earthquake.
. In the. past, however, events of such size have resulted
, in MMI VIII. Although all information relating to the size and location of this event is preliminary, it eventually may be concluded that this earthquake could
. have _ occurred anywhere wi. thin t.he New England piedmont Tectonic P.ro'vince and, in accordance with the
, Appendix A to 10 CFR Part 100,.would. represent the ,..
largest historical earthquake in that province. The previous histo.rical maximum earthquake is MMI VII.
This could result in an increase in the size. of the,
. controlling earthquake and, therefore, 'the assumed earthquake ground motion and Safe Shutdown Earthquake for nuclear-power plant sites in this region which includes much of New England and southern New York.
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The historical 1755 MMI VIII Cape Ann ' earthquake, currently used in. the design of Seabrook, is related to a different tectonic province within,the White Mountain region of New England.
William J Dircks
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Executive Director for Operations e . + ,
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UNITED STATES .
.- 0 9 n L NUCLEAR REGUL'ATORY COMMISSION
- 1. M I h$ , WASHINGTON, D. C. 20555 -
N.
- MAR 181932
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- Docket No.: 50-395 MEMORANDUM FOR: Atomic Safety and Licensing Board for Virgil C. Summer Nuclear Station, Unit No.1-FROM: - Robert L. Tedesco, Assistant Director for Licensing, DL
SUBJECT:
BOARD NOTIFICATION - POSSIBLE CHANGE ~0F POSITION BY U. S.-
GEOLOGICAL SURVEY ON THE LOCALIZATION OF THE.1886 CHARLESTON, S. C. EARTHQUAKE (BN NO. 82-22)
The Extreme External Phenomena Subcommittee of the Advisory Committee on Reactor Safeguards _(ACRS). sponsored a two day meeting held on January 28-29, 1982 to-hear presentations by' prominent earth scientists throughout the U. S. who are
. engaged--in seismic.and geologic research. During the seminar much time. was~
spent discussing the geology and seismicity of the Charleston, South Carolina
. region.~. In past licensing decisions, the NRC staff has assumed, based primarily on recommendations from the U. S. Geological Survey (USGS), that the relatively high seismicity in the Charleston area, including the 1886 Intensity X Charleston -
, Earthquake .would.not recur anywhere but in the Charleston area. ,
Geologic and seist'iic research, funded by the NRC and carried out by the USGS, .
has -been ongoing in the Charleston area =since 1973.. In reviewing the Virgil C.
-Sumner OL-SAR, the NRC stafff and the USGS considered all cf the information avail'able at that time and reaffirmed our original CP-SER conclusion.
No significant new information was. presented at the January 28-29 ACRS Subcommittee meeting that was not considered in our evaluation of.the Virgil C. Summer Nuclear
-Station, but the USGS stated that it was reviewing its position on' the Charleston earthquake'. The USGS review c'ould result in one of the following three positions or some other alternative: (1) A Charleston-type event could only occur in the Charleston area - a reconfirmation of their past position; (2) A Charleston-type event.is more likely to occur. at Charleston than elsewhere, but is not unique to the Charleston : area; (3) A Charleston-type event could ' occur throughout the eastern seaboard'as.there is nothing unique to the Charleston area.
The NRC staff continues to support its position stated in the Virgil C. Summer OL-3ER pending any new position statement by the USGS, which we expect to receive
.in-the future.
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' , . tl 2-ggg y 3 ,gg2 A more-deta'iled discussion of the NRC staff position on this matter is -
presented in Commission Paper (SECY-82-53), a copy of which is attached.
- We will notify you immediately upon receipt of the USGS position. ,
N ? "J 14
- Robert L. Tedesco, Assistant Director
. for Licensing Division of Licensing
Enclosure:
'As stated =
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i D i Mr;LT. C'. Nichols , Jr. .
- l Vice President & Group Executive . 1
-Nuclear Operations .
' South Carolina Electric & Gas Company
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i Post 0ffice-Box 1764 I
~-Columbia. South Carolina 29218 3
' 1 cc:: Mr. Henry Cyrus
- Senior.Vice President'
. South Carolina Public' Service Authority -
1223 North Live Oak Drive
'Moncks Corner, South Carolina 29461 J. B. Knotts, Jr., Esq.
-Debevoise & Liberman ,
, 1200 ?7th Street, N. W.. 1
< Washington, D. C. 20036
- Mr. Mark B. Whitaker, Jr.
-Group Manager - Nuclear Engineering & Licensing South Carolina Electric & Gas CompanyL Post Office 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
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JJenkinsville, South Caro. lina 29065 ,
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Mr. James P. O'Reilly. '
.U. S._NRC, Region 11 101 Marietta Street Suite 3100
. Atlanta, Georgia .30303 4.
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b DISTRIBUTION OF BOARD NOTIFICATION
-(Re possible change o f position of 1886 -
South Charleston earthquake)
Atomic Safety and Licensing Dr. Robert C. Axtmann Board Panel' Mr, Myer' Bender *
. Atomic Safety and Licensing Dr. Max W. Carbon Appeal Board Panel Mr. Jesse C. Ebersole Docketing and Service Section Mr. Harold Etherington Brett Allen Bursey Dr. William Kerr
- George Fischer, Esq. Dr. Harold W. Lewis
., _ Herbert Grossman, Esq. Dr. J. Carson Mark Dr. Frank F. Hooper Mr. William M. Mathis Joseph B. Knotts , 'Jr. , Esq. - Dr. Dade W. Moeller Mr.. Gustave A. Linenberger Dr. David Okrent Randolph R. Mahan Dr. Milton S. Plesset Richard P. Wilson,*Esq. Mr. Jeremiah J. Ray Dr. Paul G. Shewmon Dr. Chester P. Siess Mr. David A. Ward e
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. February 5, 1982 , .. ~SECY-82-53
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- POLICY ISSUE .
linformation)
FOR: The Commissioners FRCM: Executive Director for Operations -
SU30ECT: POSSIBLE RELOCATION OF DESIGN CONTROLLING EARTHQUAKES IN THE EASTERN U.S. . . .
-FURPOSE: To' provide ' the Ccesissi,6riers pith ih. formation ~
f, relating to (D.'_possible modification of the
.U.S. Geological Survey petition ~bn the association ,
- of the 1886 -Charleston, S.C. earthquake with.
geologic structure, and (:2f th'e~: r.e'cifMea.rth@akes ~
in New Brunswick, Canada. -
- A . .
. DISCUSSIbN: In 'the licensing of facilities in the Southeastern >
U.S. , the NRC. has maintained the position.. based on .
'the advice of the U.S. Geological .Surve'y -(USGS), that any reoccurrence of the 1886 Charleston, S.C. earthquake
- (Modified Mercalli Intensity (MMI) X, estimated Macnitude about 77would be confined to the Charleston area. That if, the Charleston earthcuake is assumed
~
to be associated with a geciogic structure i.n the Charleston area. Nuclear power plants in the region east of the Appalachian Mountains are, therefore, usually centro 11ed in their seismic design, according
- to Appendix A to 10 CFR Part 100, by the maximum historical . earthquake not associated with a geologic .. '
structure., This controlling earth:;uake is typically
an' MMI VII or VIII. Since 1974, Ge iiRf has - .
funded an extensive research project in the Charleston . J area to gain further information on the causative mechanism of this event. ,
On January 28 and 29, the Extreme External Phenomenen '
- -- Subecmmittee of the ACRS convened a meeting of expert
~
professionals in the'geosciences to obtain an overview -
of the state of knowledge and future NP.C research .
needs. During that mee-ing, we were informed by-the Centect: l
- R.-Vollme'r, NRR 0gv -
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'492-7207. 10
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USGS that they had formed a ' working group to reassess the validity of their. position on the /
Charleston earthquake. They ihdicated that their '
' tentative position concluded that the reoccurrence of. a Charleston-type earthquake should not be con-
sidered unique to the-Charleston area. It was -
further indicated. their recommendation' would be -
Lforwarded.to.the USGS Director in approximately
.one month and that a policy decision on the treatment of the ' Charleston earthquake would be '
made at the Director's level.
Any major modification of the former USGS position could have significant impact on many Eastern US nuclear plant sites because Appendix A to 10 CFR Part -100 could recuire an earthcuake of this type, with its:resulting high grcund motion, to be ..
~
assumed to occur at any locatic.n. '
A meeting- between the EDO and the Director, USGS,
-en licensing issues'ii plan'n~2d fo'r the near future.
- Further .information may.be available at that time.
New Brunswick, Canada, Earthcuakes On-January 9-11,'1982, a.: series of earthquakes .
cccurred in New Erunswick; Canada. ~ The largest of these events was.a Magnitude 5.7 earthcuakt which occurred on January 9,1982. Because of its remote ,
locatien, no damage wi.s l associated with this earthcuake.
.In the past, however, ' events of such size have resulted in'PMI VIII. Althcugh all information relating tb the size and 1ccation of this event is preliminary, it eventually may be concluded that this earthquake could have occurred anywhere within t.he New England Piedmont Tectenic 'Frovince and, .in accordance with the ippendix A to 10 CFR part 100, would represent the ihrgest historical earthquake in that province.
ihe .
- revicus historical maximum earthquake is P.MI VII.
This could result in an increase in the si:e of the
. controlling earthquake and, therefore, the assumed
. earthquake ground motien and Safe Shutdown Earthquake
, for nuclear power plant sites in this regio'n which includes much of New England and southern New York.
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. 3-L The historical 1755 MMI VIII Cape Anii earthquake,
. currently ~ used in the design; of seabrook, is related to a different tectonic province within,the White
. Mcuntain region cf New England. .
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, q-William J: Dircks Executive Director for Operations e e- e g OM e
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BOARD NOTIFICATION DISTRIBUTION (82-22) NAR 18 ISEE
' Docket File -
-LB!1-Reading EBoard Notification File D. Eisenhut
-NRC PDR
' Local PDR DL Branch C'iefs
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M..Rushbio..
'R. H. Vollmer
'M. Jambor.
'R. Mattson S. Hanauer B. Snyder R.'Hartfield, MPA 0 ELD OIE (1) .
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H. R. Denton/ E. Case .
PPAS W. J. Dircks -
.V. Stello .
'S. Goldberg, ELD J. O'Reilly, Region II J. Sniezek, IE Hqrs.
R. L. Tedesco H. Thompson D. Ziemann e
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D. E. Duttori
. :e = u x-June 1,1982 Jeffery Annbruster District Chief ,
U.S. Geological Survey 6481 Peachtree Industrial Boulevard Suite B Doraville, GA 30360
Dear Mr. Armbruster:
Our drilling program to provide geologic information on the " Suggested Millet Fault" is now undemay near the Savannah River with four drills presently core drilling on the Georgia side. As mentioned in earlier conversations with you, we are pleased to cooperate with you, to provide more infonnation on the subsurface geology of the area. Members of your group are invited to visit our drilling operations,in the field and log the core samples collected. Current plans are to complete these holes as permanent observation wells to allow future measurements of the .
potentiometric ground water surface.
- In addition, to core drilling, a suite of geophysical logs have been run in each of the holes to assist in structural interpretation by correlation of lithologic units. A copy of each of the field geophysical logs is attached for your use. As these are preliminary, please treat as proprietary until official transmittal to the NRC or unless specific written permission is granted for release. Copies of the final geophysical logs will be sent to you as soon as they become available.
incerel s, ydr~
Doug Dut on Vice President Generating Plant Projects Attachment cc: R. E. Jackson (w/ attachment)
W. I. Marine (w/ attachment)
M.Hawkins(w/ attachment)
Dr. W. Hayes (w/o attachment)
R. Morriss (w/o attachment)
D. O. Foster (w/o attachment J. A. Bailey (w/o attachment '
O. Batum (w/o attachment)
R. A. Thomas (w/o attachment)
C. R. McClure (w/o attachment J. M. Grant (w/o attachment) )
Southern Company Services, Inc.
Post office Box 2625 Birmingham, Alabama 35202 Telephone 205 870-6011 Vogtle Proj.ect June 9, 1982 Jeffery Arrbruster District Chief -
U.S. Geological Sun'ey 6481 Peachtree Industrial Boulevard Suite B Doraville, GA 30360
Dear Mr. Arrbruster:
As you are awarefour drilling program to provide geologic info' .0. tim on the " suggested Millett Fault" is now underway near the Savannah Fiver.
Attached is a copy of the final field geophysical logs for dr.'.ll holes VG-1, VG-3, VG-4 and VG-66. Please treat as proprietary unti'. officaJ transmittal to the NRC or unless specific written permission <s granted for release. Copies cf the final geophysical logs for the other holes will be sent to you as soon as they beccrne available.
Yours truly, h
J. A. Bailey Project Licensing Manager ..
! JAB /ssb Enclosure xc: R. A. Jackson (w/ attachment)
I.W. Marine (w/ attachment) , t M. Hawkins (w/ attachment)
W.V. Conn (w/attacMent)
R. Morriss (w/o attachment)
D.O. Foster (w/o attachment)
D.E. Dutton (w/o attachment) -
O. Batun (w/o attachnent)
R.A. Thcmas (w/o attachment) '
C.R. M:Clure (w/o attachment)
J.M. Grant (w/o attachment)
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/5 southern Company services, Inc. -
Post Office Box 2625 b Birmingham, Alabama 35202
, Telephone 205 870 6011 Vogtie Projeet June 24, 1982 Mr. Jeffery Armbruster District Chief U.S. Geological Survey 6481 Peachtree Industrial Boulevard Suite B Doraville, GA 30360
Dear Mr. Armbruster:
Enclosed is a copy of the final field geophysical logs for Drill Holes VG-4, VG-5, VG-6, and VG-7. Two sets of the composite log for VG-4 are included. The original log was not in the same fonnat as the previous Birdwell Logs, so Law was requested to transpose the traces onto a log with the same format. Both logs are included for verification of the original. Please treat as proprietary until official transmittal to the NRC or utiless specific written permission is granted for release.
Copies of the final geophysical logs for the other holes will be sent to .
you as soon as they become available.
+
Sincerely yours, h* .
J. A. Bailey -
,'s Projects Licensing Manager JAB /jwa Enclosure x.c : R. A. Jackson (w/ attachment)
I. W. Marine (w/ attachment)
M.Hawkins(w/ attachment)
W. V. Conn (w/ attachment)
R. Morris (w/o attachment)
D. O. Foster (w/o attachment)
D. E. Dutton (w/o attachment)
- 0. Batum (w/o attachment)
R. A. Thomas (w/o attachment)
C. R. McClure (w/o attachment)
J. M. Grant (w/o attachment)
.