ML19351D187
| ML19351D187 | |
| Person / Time | |
|---|---|
| Issue date: | 08/08/1980 |
| From: | Advisory Committee on Reactor Safeguards |
| To: | Advisory Committee on Reactor Safeguards |
| References | |
| ACRS-1758, NUDOCS 8010090173 | |
| Download: ML19351D187 (11) | |
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ISSUE DATE: 8/8/80 8lTho MINUTES OF THE ACRS SUBCOMMITTEE MEETING ON THE i
GENERAL ELECTRIC TEST REACTOR (GETR)
SUNOL, CA JUNE 16 & 17,1980 i
I The ACRS Subcommittee on General Electric Test Reactor (GETR) met at Sunol. Country Club, Sunol, CA on January 16 & 17, 1980 to continue its discussion on geology, seismology, and structural engineering aspects of the GETR facility.
30, 1980.
The r'tice of i.his meeting was published in the Federal Register on May The entire meeting was open to the public. The schedule of the meeting, the attendee list, and handouts received at the meeting are attached.
There were six members of the public that made oral presentations at the meeting. They B. Weidenbaum, B. Gilchrist D. Hughes. H. Hubbard, H. L. Halterman, and were:
G. Barlow. Mr. E. Igne was the Designated Federal Employee for the meeting.
The meeting was attended by ACRS merrbers, W. Kerr, Chairman of the Subcommittee.
D. Okrent (June 17th only), and C. Siess. The ACRS consultants who attended S. Philbrick, G. Thompson, J. Maxwell, T. Pickel (June 16th only).
the meeting were:
M. White, P. Pomeroy, A. Ang, B. Page, and M. Trifunac.
A brief overview of the status of the GETR was presented by Mr. C. Nelson, NRC Project Manager, and they are as follows:
The primary purpose of this meeting was to discuss the seismic design parameters.
The landslide hazard has not yet been completely resolved. The Staff feels that this ussues is an important issue in the seismic design and in A schedule the determination of the structural adequacy of the facility.
of implementation and completion of the landslide study is needed by GE, although this is not needed at this time in order to complete the evaluation of the GETR.
The Staff has not completed its review of GE's struc'fural analysis o'f the GETR facility. The SER on this item has not yet been issued.
The Staff estimates that the SER on the structural aspects of the GETR should be issued in July and the completed SER on the GETR should be issued in August.
L 8010090N3'
i GETR 6/16&l6/80 Mr. R. Dannitzel, Manager of the Vallecitos Nuclear Center, of which GETR is a part, identified the open issues and described how GE intended to resolve them. He further stated that the GETR facility meets the necessary require-emnts of keeping the fuel covered with water, which insures no release of the fission products.
Mr. D. Gilliland, Manager of Operation at GETR, described the GETR structures, systems, and equipment which are important to safety and the modifications chich have been made to assure that the facility will meet the design basis criteria, that is, to ensure that the fuel remains covered with water at all times.
ln response to a question, Mr. Gilliland stated that there is a seismic scram system at GETR. This system detects the horizontal components of the earth-quake and scrams the reactor within 0.8 seconds. The scram is set at.01 g.
The modifications to the plant consisted essentially of reanalyzing the GETR facility and adding restraints supports, hangers, etc. to the reactor pressure system and canal storage system in order to maintain an adequate safety margin.
The GETR structures have been analyzed and modified to accept the following seismic design parameters:
An 0.8g effective ground acceleration and Regulatory Guide 1.60 response spectrum shape.
A one meter offset.
The acceleration and. surface offset have been assumed to act independently.
The above design parameters are in conflict with the Staff's seismic design criteria. The difference in design criteria is causing a delay in the, Staff's evaluation of GETR structural modifications.
Mr. J. Reed, consultant to GE, presented the results of probability analysis on (1) surface rupture offset beneath the reactor building and (2) combined surface rupture offset vibratory ground motion. The model used in the analyses
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GETR 6/16&l7/80 accounted for the following characteristics:
Offsets may occur due to unknown, undiscovered shears in the region.
Offsets may occur between shears due to an offset occurring on existing shears.
The parameters affecting the results are as follows:
The age of the soil beneath the rea: tor.
Time period between offsets events.
Strain rate on existing shears.
Specified confidence value.
Results of the analysis are as follows:
Probability of a future offset beneath the reactor building is 10-6 to 10-5, GE GE assumed a value of 8000 yrs for the time since the last offset.
therefore stated that surface offsed should not be considered as a design.
If surface rupture must be considered beneath the reactor building, GE recommends one meter.
Mr. J. Martore of the NRC Staff presented the status of NRC evaluation of the plant structures. Mr. Martore stated the GETR acceptance criteria are as follows:
The safety-related systems should safely shut down the reactor during a design basis accident.
Assure integrity of concrete core structure which support other systems and components important to safety.
Assure integrity of reactor vessel and canal fuel storage tanks.
Assure capability of providing makeup water to spent fuel storage tanks and reactor vessel.
Mr. Martore then presented the revised NRC seismic design criteria as follows:
Regulatory Guide 1.60 spectra anchored to 0.75g.
Surface rupture offset of one meter of reverse-oblique met slip varying in dip from 10 to 45 degrees.
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GETR v/lba7/80 l
Regulatory Guide 1.60 spectra anchored to 0.6g together with a surface offset of one meter as described above.
The GE structural analysis to date does not comply with the NRC requirements.
More work is necessary by GE and NRC before this issue is resolved.
1 Mr. D. Yaden of Earth Sciences Associates, a consultant of GE, presented a chronology of the GETR landslide investigations performed to date, and dis-cussed the pr oposed filed and laboratory investigations and analyses. The i
proposed program will include field borings, e-loggings, piezo' meter installation.
and possibly test pits.
Six members of the public made oral presentations at the meeting. They are:
Ms. Weidenbaum, hs. Gilchrist, Ms.Hughes, Ms. Hubbard, Mr. Barlow, and Mr. Hal terman.
Mmes. 4:idenbaum, Gilchrist, Hughs, and Hubbard are associated with a pro-energy organization called Citizens for Total Energy. They all spoke for the resumption on GETR. Mr. Barlow is with the Friends of the Earth Foundation. He stated that the NRC has ignored the USGS recommendation that the amount of surface offset at the GETR site could exceed one meter. Mr. Barlow contends that the NRC is not capable of protecting the public health a.d safety.
Mr. Halterman is from Congressman R. V. Dellum's Office of the 8th District, CA.
He stated that the geologic design criteria cannot yet be effectively evalusted until more information has been presented.
Mr. W. Hall, a consultant to NRC, made a presentation on seismic evaluation of the Vallecitos site. The recommended seismic criteria are as follows:
Effects associated with the Calaveras Fault acceleration of 0.6 to 0.75g for use in anchoring the Regulatory Guide 1.60 spectra no fault offset transmitted to site Effects associated with Verona Fault acceleration of 0.35 to 0.40g coupled simultaneously with a fault offset of one meter in any arbitrary direction 6
4
GETR 6/16&l7/80 Mr. Slemmons, a consultant to the NRC, made a presentation on the assumptions of the input to the probabilistic analysis. He discussed the age of soil and paleosols, fault slip rates, recurrence intervals, and earthquake magnitudes.
He also stated the conservatism in the probabilistic analysis performed by GE consultants, J.R. Benjamin Associates.
The Mr. Vesely of NRC presented a review of the GETR probabilistic analysis.
summary of the review performed by NRC consultants, Lawrence Livermore Lab. and TERA is as follows:
Experts found softness and sensitivities in JBA probability studies.
Experts did not present any arguments on JBA probabilities being grossly in error.
TERA's alternative probability model gave comparable results to JBA's.
In conclusion, Mr. Vesely stated that (1) from JBA's report and sensitivity analyses, a credible range for the offset probability is assessed to be 1 x 10-6/yr to 1 x 10-4/yr to an order of magnitude uncertainty and (2) JBA's analysis is credible and should be factored into decision making.
fir. Justus of the NRC Staff presented a summary of the SER findings. These findings are listed below:
Appendix A,10 CFR 100 investigative requirements are not met.
GETR is located within 3200 ft. wide Verona fault ione.
The Verona Fault is capable.
Future displacements will occur most likely on existing faults; faults may exist in GETR foundation soils.
Loading by surface offset r.nd peak acceleration must be considered
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j to act simultaneously.
Landslide hazard potential exists.
Structural evaluation is being evaluated.
A member of the Subcommittee suggested that tne NRC should develop independent capability in translating earthqvike infomation into structural design basis.
Currently, this seismic evaluation is being done by consultants to the NRC.
6/16&l7/80 6-GETR 1
The structural evaluation, based on seismic design criteria performed by NRC con-
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A sultants, has been accepted by NRC and GE as a conservative design basis.
member of the Subcommittee questioned the basis of the consultants' evaluation as conservative if the Staff or Licensee has no capability to perform an in-dependent analysis.
s The Subcommittee consultants recommended that additional dynamic analyses be performed on the structures to account for time effects of the earthquake sur-In addit. ion, a member face offset which were neglected in the GE analysis.
of the Subcommittee suggested that the effects of surface offset greater than one meter should be considered.
The Subcammittee noted that further information is not needed in the s It also decided that the GETR matter not be brough to the full ACRS area.
until further progress is made on the resolution of outstanding issues.
The final SER is tentatively scheduled to be completed in August 1980.
17, 1980.
The meeting was adjourned at 6:30 p.m. on June For additional details, a complete transcript of the meeting is available 20555 or in the NRC Public Document Room,1717 H St., NW, Washington, DC NOTE:
from Alderson Reporters, 300 7th St., SW, Washington, DC (202-554-2345).
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1 F=Ard Regis$r / Vol. 45. IVr.10s / Fdday. Wa-N.1980 ( Notices-3 5g3 l
Detat Way 3 ' ma Acutmery Cummittmo far Engineedrn g by meebars of the Subcommitaee. lie f
I consaitanta, and Staff. Persons desiring M. e.s-Wamurr.
and Appned Science; Open Meeting a
to make ers! statements should notify coms taee Asanor-wr rcaerdes'*
In accordance with the Federdl the Designated Federol Employee as far treom m.ime mes.
e<a-q Advisory Committee Act. Pub. L 23-4e.
in advance as practicable so that a-coas nos.ei.e -
the National Science Founda5os approprimer arrangements can be made annamosa the foDowing meeting.
necessary h W b to Name AdvisoryCommittee for Eng6neerfrq merung bd stayents.
Ad Hoc hoe br h W and Apphed Science-Task Oroup en he agende for subject meeting shall Warm Cors Rings;MeeSag tJaique Problems is Eastaeonna Raseeech In accordance with the Federal Date ! e tsN.
Advisory Committee Ad. as amendasL Place:1a00 C Street. N.W., Room 421.
Afonday atrd Tuesday fune 16-17.1980 Pub. L 92-463. the Natsonal Science Washington. D C 20s50.
g gg,,,g,,,f Foundation announces the following Type ofineehnt open.
.busm.ess coch day.
Contact person: Ms. Mary F.Oncemer, meeting:
Enscotsue Secseimy. Ademory Ceeunittee The Subcommittee may meet in
- aaet AdHoc Sabecamittee for the for Wm sad Ap#ied Soence. Room Execu6ve Session, with any of its Review of the Waras Care Emps (WCRl Sr. Nauonal Science Founda tion.
consultants who may be present. to Project of the Advisory Cammatee foe Washmston. Dn 20554. telephone: (207J explore and exchange therr preliminary Ocean Sciences.
337-4571.
Summary minatua Ms. Mary thermer.
opinions regardm.g matters which should 1
I GATE AleO Tianc 19-20 jime 1900. 8.30 Special Assisterrt. Directorate for be considered during the meeting.
a.m. to 5.00 paa, ansin anns and Appn.d science. Roam At the conclusion of the Executive SU.NationalScenoe Foer.datlan.
Session, the Subcommittee will hear pt.Act National Soonse Foundstion.
a G Strat. NW. Room ma.
37n ry7 ting To provide Presentaticos by and hold discussions Washington. DC 20550.
edvice, r=m==endations. and counami an with representalives of the NRC Staff.
the Cencral Electric Company. their Type or testTissa: Closed.
maior goals and policies pertaining to Ens neenna and Apphed Science activitlas consultants and other interested persons caperscT pensosc Or. Rodger W.Beier.
Intemational Decade of Ocean Ahda.
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- I'"*!D8iC '"d "I#"CI"#8l '"8I""""8 Exploration. Science. Room 885.
June M aa to 4.3%
aspects of the GETR plant sne. Other National Science Foundation.
Docussma af the NSF and Departmani af matters related to the NRC Order to Washingtoa. DC 20550; telephone 202/
Edw.ation sesportas to Premdent Canet's Show Cause may also be discussed.
357-0749*
request let a seviam. with ricommendatiesen It may be necessary for the Pumposa or marwarTTsc To provide on whether U.S. science and ensineengs Subcommittee to hold one or more the IDOE Ad Hoc Subcommittee education is adequate to meet the Nattoci's closed sessions for the purpose of members with additional expertise in long term needs.
exploring matters involving proprietary Discussion of National Academy of the review and evaluation of propoeais information. I have determined.
Ecameering (NAE).Taskforce an relatmg to oceanographic research Engineenna Education, study on issues la therefore,in accordance with related to the Warm Core Rings Project.
engineertna education.
Subsection 10(d) of the Federal actwoA: Detailed review and evelaation M. Rebecca winkle.
Advisory Committee Act (Public !.aw cf proposals for support of the Warm Committee Manayesierrr Coordinosac.92-463), that. should such sessions be required. it is necessary to close Core Rings Project.
May 27. teso.
[tASONPOACt0SmG:De proposala pn car. go.,um med s.se se seg portions of this meeting to protect proprietary information. See 5 U.S.C.
being reviewed include information of a an.una cons nas e propnetary or confidential nature.
552b{c)(41 includmg techmcalinformation:
/
Further information regarding topics financial data. such as salaries; and NUCt. EAR REGut ATORY
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to be discussed. whether the meeting personalinformation conceming COMuleSM has been cancelled or rescheduled. the Chairman's ruling on requests for the Adyt
' wnmittee on Reactor pr sa e
tte s Opportunity to present oral statements Safegu Subcommlitee on the and the time allatted therefor can be esemptions (4) and (6) of 5 U.S C.
Genera Ein.tric Test Reactr.,r; Meeting y a piepaid teleph ne call to 55:b(c). C.wernment La the '=n&==
a Act.
%e ACRS Subcommittee on the the cognizant Designated Federal EUTwomTV 70 cLost attTwea: nia General Electric Test Reector (Cl3M1 Employee. Mr. Elpidio G. lgne determination was raade by the will hold a meeting on June 16-17. Isac (telephone 202/634-1414) between 8:15 Committee Management Officar at the Sanoi Va!Iey Golf Club. 0000 am M mm. E pursuant to provisions of Section 10(dJ Mission Road. (Highway 6a0. Andtsde of Pub. L a:-4al. The Comn= tsee Turnoff), Sunol. CA. Notace of this Dated: May 23. Isas.
Management Officer was delegated the meeting was published May 11 John C. Horie, in accMann with the procedures Advisory Commince Afonegement OfFcer.
cuthonty to make such determinations outhned in the Federal Ret eter ai i
by the Diredot. NSF. on luly a.1775.
7,.
esLLasa coot neo.ei-as M. Rebeua Winkler*
writtes statemartta saay be presented IIT Conum, ace Afascgament Coordinceer, members of the public. recordings wtt May 27.1sae.
be permitted only durms those pertmuna tra o=.es as re d6 + an e.s.=4 of the meeting when a tranacryt is bemg snu=o coce news-as kept and quostiens may be asked only ATTACHMENT A D*
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'(CRS SUS:093ITTEE MEET 3NG ON THE GENERAL JUNE 16 & 17, 1930 SUN 3L, CA TENTATIVE SCHEDULE _
JUNE 16, 1980 SPEAKER APPROXIMATE TIME _
Kerr Chairman's Opening Statement 8:30 a.m. - 8:45 a.m.
NRC Staff Introductory Statement 8:45 a.m. - 9:00 a.m.
GE Introduttory Statement 9:00 a.m. - 9:15 a.m.
GETR Facility and Modifications GE 9:15 a.m. - 10:15 a.m.
Description, Required Safety System
- BREAK 10:15 a.m. - 10:30 a.m.
GE Seismic Analyses (Structures & Equipment) 10:30 a.m. - 11:30 a.m.
Methodology GE Result of Seismic Analyses (Structures &
11:30 a.m. - 1:00 p.m.
Equipment)
- LUNCH 1:00 a.m. - 2:00 p.m.
Status of NRC Evaluation of Plant NP.C Staf f 2:00 p.m. - 3:30 p.m.
Structures GE Landslide Stability Program 3:30 p.m. - 4:15 p.m.
- BREAK 4:15 p.m. - 4:30 p.m.
Public Comments
- 4:30 p.m. - 5:30 p.m.
End of Business Day 5:30 p.m.
NOTES:_
- 1.
Request for oral statements:
Dee Price; SMUD Ratepayers Asso. (10 mins.)
(10 mins) a.
Helen Hubbard; Citizens for Total Energy (15 mins.)
5 mins) b.
Diane Hughes 5 mins)
Sue Hughes 5 mins)
Kaye Huhlman 5 mins)
Allow 30 mins. for late requests H. Lee Halteman, Congressman Dellum's Office c.
(15 mins)
ATTACHMENT B m
ACRS SUCC0'*1!TTEE MEETING ON THE GENERAL ELECTRIC TEST REACTOR (GETR) ~
JU:E 16 & 17,1980 SUN 3L, CA JUNE 17, 1980 SPEAKER APPROX: MATE TIfE Kerr 8:30 a.m.
Chairman's Opening Statement NRC PRESENTATION 8:45 a.m. - 9:30 a.m.
Staff Review of Site Geology GSB/HGES USGS 9:30 a.m. - 10:30 a.m.
Geology
- BREAK **********
10.3G a.m. - 10:45 a.m.
10:45 a.m. - 11:45 a.m.
Review of Probabilistic Analysis by LLL/ TERA NP.C Consultants NRC Staff 11:45 a.m. - 12:15 p.m.
Review of Probabilistic Analysis
- LUflCH **********
12:15 p.m. - 1:15 p.m.
1:15 p.m. - 1:45 p.m.
Proababilistic Analysis Input Assumptions Sl emmons GSS 1:45 p.m. - 2:15 p.m.
Geology (Conclusions)
NRC Staff (Hall) 2:15 p.m. - 3:15 p.m.
Seismic Design Basis
- BREAK **********
3:15 p.m. - 3:30 p.m.
GE PRESENTATION GE 3:30 p.m. - 5:30 p.m.'
Geology soil age interpretation of excavation photographs etc.
GE 5:30 p.m. - 6: 00 p.m.
Probability Analysis 6:00 p.m. - 6:30 p.m.
Caucus and Adjournment 9
m
ACRS SUBCOMMITTEE MEETING ON THE GENERAL ELECTRIC TEST REACTOR (GETR)
SUNOL, CA JUNE 16 & 17,1980 ATTENDEE LIST NRC STAFF ACRS W. Kerr, Chairman R. Jackson C. Nelson C. Siess D. Okrent (17th or.ly)
P. Justus M. White, ACRS Consultant W. Hall, NRC Consultant P. Pomeroy, ACRS Consultant R. Clark D. Bernrueter, NRC Consultant A. Ang, ACRS Consultant J. Maxwell, ACRS Consultant J. Martore T. Trifunac, ACRS Consultant W. Burkhardt T. Pickel (16th only), ACRS Consultant G. Zwetzig Region V S. Philbrick, ACRS Consultant D. Swanson B. Page ACRS Consultant J. Greeves G. Thompson, ACRS Consultant M. Wohl E. Igne Designated Federal Employee D. Slammons NRC Consultant W. Vesely GENERAL ELECTRIC COMPANY U.S. GEOLOGICAL SURVEY i
D.
illiland R. Darmitzel J. Devine R. Sharpe, GE Consultant W. Ellsworth G. Kost, GE Consultant R. Morris K. Gallen E. Brabb E. Firestone E. Strain K. McCausland EARTH SCIENCES ASSOCIATES R. Blood D. Yadon M. Reynolds W. Sabol R. Meehan N. Fifer R. Harding D. Smith R. Wright R. Shlemon, GE Consultant H. Stone H. Kamil, GE Consultant JACK R. BENJAMIN & ASSOCIATES R. Kovach, GE Consultant J. Reed P. Karhel ATTACHMENT C l
i
GETR 6/16&l'/80 DAMES & MOORE LAWRENCE LIVERMORE LABORATORY R. McGuire P. Smith
- 50. CALIFORNIA EDISON COMPANY TERA CORPORATION H. Hawkins B. Davis STANFORD UNIVERSITY WOODWARD-CLYDE CONSULTANTS R. Jahns M. Power CITIZENS FOR TOTAL ENERGY ALAMEDA COUNTY PUBLIC WORKS H. Hubbard E. Callender E. Weidenbaum C. Cornstock B. Gilchrist D. Hughes FRIJNDS OF THE EARTH CONG. DELLUMS' 0FFICE G. Barlow D. Redic H. L. Halterman INpi.NDENT LIVERMORE A. ': Gay ENGINEERING DECISION ANALYSIS CO, INC.
I G. Kost MEMBERS OF THE PUBLIC 1
B. Shockley G. Kasali V. Zwetzig S. Rice, CDMG B. Clark, Modesto Bee
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K. Mcdonald, Valley Times J. Miller, Oakland Tribune S. Biley, Tri-Valley Herald 1
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