ML19305C736
| ML19305C736 | |
| Person / Time | |
|---|---|
| Issue date: | 01/10/1980 |
| From: | Harold Denton Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML19305C734 | List: |
| References | |
| NUDOCS 8003310344 | |
| Download: ML19305C736 (3) | |
Text
A y/
fiable seismir resistance capabilities of these facilities.
It is anticipated that topics may be identified within SEP which potentially could frpact other operating reactors or new plant licensing.
A feedback mechanism has been established to relay the information in an expeditious manner to others on the NRC staff, licensees and applicants to assure that appropriate actions are taken in a timely manner.
B.
Task Action Plan A-40 (TAP A-40) l Task Action Plan A-40 is a short range program which was instituted in 1977. This program is geared toward*providing the NRC with information within a much shorter time frame than is dictated by the scheduled completion of the more involved activities under the SSMRP. Its goal is to provide generic, quantitative estimates of the conservatisms in selected individual pieces of and the overall seismic design change when, following current criteria. Phase I consists of an evaluation of the conservatisms in the calculateo responses of structures, systems ano cocoonents, including the consioeration of elasto-plastic seismic analyses, site spectra (as opposeo to site.incepencent spectra sucn as that cescrioca in Reg. Guice 1.60), nonlinear strucural dynamic analyses, and soil / structure interaction. Phase 11 consists of an evaluation of the conservatisms in the seismic input oefinition, incluaing the study of earthquake source moceling anc the anaysis of nearfiele ground motion. Results of the various s
tasks in this program to date have suostantiated tne existence of conser-vatisms in the current seismic cesign methodology.
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C. Seismic Safef / Margins Research Program (SSMRP)
The SSMRP is a long range research program (approximately 61/2 years) which is aimea at improving the seismic design metnocologies. The objectives of tnis program are to:
a) estimate the conservatisms in the Standaro Review Plan seismic cesign requirements,
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b) cevelop improved requirements, ano j
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UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION 0FFICE OF NUCLEAR REACTOR REGULATION HAROLD R. DENTON, DIRECTOR In the Matter of
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PETITION REQUESTING SEISMIC REANALYSIS (10 CFR 2.206)
ERRATA February 21, 1980 The following correction to the text of 00-80-1 will be made in the printed version appearing in 11 NRC:
Page 20 - Insert the following after line 8:
"1977. This program is geared toward providing the NRC with information within a much shorter time frame than is dictated by the scheduled completion of the more involved activities under the SSMRP.
Its goal is to provide generic, quantitative estimates of the conservatisms in selected individual pieces of and the overall seismic design change when following current criteria. Phase I consists of an evaluation of the" Harold R. Denton, Director Office of Nuclear Reactor Regulation Dated Bethesda, Maryland this l
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