ML20138B822
| ML20138B822 | |
| Person / Time | |
|---|---|
| Issue date: | 10/23/1985 |
| From: | Blackford M, Jagannath B, Valdes J NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Greeves J, Knapp M NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| REF-WM-39 NUDOCS 8512120386 | |
| Download: ML20138B822 (6) | |
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tham MEMORANDUM FOR:
John T. Greeves, Chief 11 WMEG DSo11enberger GGnugnoli egel SWastler, URN Malcolm R. Knapp, Chief WMGT i
FROM:
Banad N. Jagannath, WMEG Michael E. Blackford, WMGT Jose Valdes, WMGT
SUBJECT:
REPORT ON THIRD MEETING TO DISCUSS DOE'S UMTRAP DESIGN PROCEDURES MANUAL AND NRC'S STANDARD REVIEW PLAN ON GE0 TECHNICAL STABILITY The DOE and its contractors, TAC (Technical Assistance Contractor, Jacobs Engineering) and RAC (Remedial Action Contractor, Morrison-Knudsen Engineers),
are developing an UMTRAP Design Procedures Manual. Although the Design Manual is a DOE product, the NRC is participating in the group so that the NRC's interpretation of the UMTRA Regulation (40 CFR Part 192) and review procedures are considered in developing the design manual. The DOE / TAC /RAC team is divided into four groups; Group II is addressing the geotechnical stability aspects of the design manual.
A preliminary meeting was held at the offices of NRC, Willste Building, Silver 3
Spring, Maryland, on July 2, 1985, during which the draft of the Design Manual and NRC's standard review plans were provided to all members for reviewr Subsequently, informal comments (noted in the margin) were exchanged among the participants. A second meeting was held on' August 6, 1985, at the office of Morrison-Knudsen Engineers in San Francisco, during which discussions of NRC's SRP and TAC /RAC's drafts of Design Manual were reviewed and discussed.
It was agreed to hold the next (final) meeting at NRC's office in Silver Spring, Md, and the TAC /RAC would send to NRC~in advance a copy of the final draft of the Design Manual. The TAC sent only portions of their final draft, which WM Recod File WM Project Docket No.POR /
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_g-was available to the NRC staff one day before the meeting.
The Agenda, Minutes of the meeting and list of participants are attached to this memo. The TAC /RAC will be finalizing the design manual within the next 4 weeks and send it to NRC for comments.
Banad A. Jagannath, WMEG Michael Blackford, WMGT Jose Valdes, WMGT
Enclosures:
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WM-39/JV/85/10/04 ATTACHMENT 1 i
HEETING NOTICE U.S. Nuclear Regulatory Commission Meeting with DOE / TAC /RAC in Connection with UMTRAP-Design Manual by DOE SPONSOR:
U.S. Nuclear Regulatory Commission (NRC), Engineering Branch
& Geotechnical Branch, Division of Waste Management LEAD:
Banad Jagannath, WMEG DATE/ TIME:
September 27, 1985, 9:00 a.m.
LOCATION:
Room 130, Willste Building, Silver Spring, Maryland PURPOSE:
Review and Discursion of DOE's Design Manual for UMTRA Projects PARTICIPANTS:
NRC TAC RAC B. Jagannath R. Rager N. Banerjee M. Blackford R. Weeks J. Valdes AGENDA:
9:00 a.m. - Introduction 9:15 a.m. - Review and Discussion of DOE's draft of Design Manual - Geotechncial Stability Aspects of UMTRA Projects 12:00 p.m. - Lunch 1:00 p.m. - Continue Discussion 3.00 p.m. - Conclusions 4:00 p.m. - Adjourn 7C :WMGT
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WM-39/JV/85/10/04 ATTACHMENT 2 Agreement Reached at NRC-D0E (TAC /RAC)
Meeting on UMTRAP - Design Manual SEISMIC DESIGN:
1.
The design earthquake selection procedure suggested by DOE is compatible with the review procedure mentioned in NRC's SRP, Chapter 2.
NRC's MCE is equal to DOE's Design earthquake.
2.
Campbell's (1981) attenuation relationship (84 percentile) will be used to derive the site acceleration (unamplified).
This acceleration will be adjusted, if necessary, to site specific ground acceleration using Seed &
Idriss (1982) correction curves.
3.
Slope stability under seismic load can be determined by pseudostatic analysis.
In this analysis, the seismic coefficient to be used in the design will be 2/3 of the site specific ground acceleration discussed in Step 2, above, or 0.10 whichever is higher. The minimum acceptable factor of safety wil be 1.0.
4.
If the factor of safety by pseudostatic method is marginally less than 1.0, and the seismic coefficient used in the design is greater than 0.2, alternate methods of dynamic analysis may be used to support conclusions that the slope is safe.
This option will be evaluated on a site specific basis.
5.
If a significant number of sites require extensive remedial action because of the above seismic design criteria, then the seismic design criteria will be reviewed by the committee.
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WM-39/JV/85/10/04 SEISMIC HAZARD EVALUATION Definition of acceleration:
Acceleration is considered to be a " ground" acceleration" as specified in Campbell, 1981.
" Ground" acceleration is considered to be a non-amplified peak horizontal acceleration. Local geologic conditions are considered in the earthquake engineering analyses.
Definition of Design Earthquake:
Agreed that total fault length rupture and fault length are acceptable variables for determining the magnitude of the earthquake associated with a fault.
Floating Earthquake: Agreed that use of a cap for defining the floating earthquake is not valid.
Capable Fault: NRC will check to see if macroseismicity is adequately defined as magnitude 3.5 or greater.
Acceleration:
DOE will adopt the method of Campbell (1961), namely the mean of the peaks of the two horizontal components.
Technical Approach: The level of efforts of previous regional study will be considered in determining the extent of photogeologic coverage analyzed.
The deletion or reduction of justifications in the design manual that would be more appropriate for a rationale paper.
NRC will review DOE's RAP Geology Appendix outline References Cited Campbell, K.W., 1981, "Near-Source Attenuation of Peak Horizontal Acceleration," Bulletin on of the Seismological Society of America, Vol.
71, pp. 2039-2070.
Seed, H.B., and I.M. Idriss, 1982, " Ground Motions and Soil Liquifaction During Earthquakes." Earthquake Engineering Research Institute, Berkeley, CA.
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ATTACHMENT 3 UMTRAP Design Procedure Manual - Group II, Geotechnical Stability Meeting: At NRC's office in Silver Spring, Maryland September 27, 1985 List of
Participants:
Banad'Jagannath NRC/WMEG 427-4629 Michael Blackford NRC/WMGT 427-4597 M. Nataraja (Raj)
NRC/WMEG 427-4319 Ronald Rager-TAC 846-1329 Ralph Weeks TAC 602-272-6848 Nani Banerjee TAC 415-442-7595 v
Michael Tokar NRC/WHEG 427-4748
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Philip Justus NRC/WMGT.
427-4684 Steve Smykowski-.
NRC/WMEG 427-4109 Jerome Pearring NRC/WMEG-427-4648 t
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