Guidelines for ground motion definition for the eastern United States
Guidelines for the determination of earthquake ground motion definition for the eastern United States are established here. Both far-field and near-field guidelines are given. The guidelines were based on an extensive review of the current procedures for specifying ground motion in the United States. Both empirical and theoretical procedures were used in establishing the guidelines because of the low seismicity in the eastern United States. Only a few large- to great-sized earthquakes (M/sub s/ > 7.5) have occurred in this region, no evidence of tectonic surface ruptures related to historic or Holocene earthquakes has been found, and no currently active plate boundaries of any kind are known in this region. Very little instrumented data have been gathered in the East. Theoretical procedures are proposed so that in regions of almost no data, a reasonable level of seismic ground motion activity can be assumed. The guidelines are to be used to develop the safe shutdown earthquake (SSE). A new procedure for establishing the operating basis earthquake (OBE) is proposed, in particular for the eastern United States. The OBE would be developed using a probabilistic assessment of the geological conditions and the recurrence of seismic events at a site. These guidelines should be useful in development of seismic design requirements for future reactors. 17 refs., figs., tabs.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5580033
- Report Number(s):
- ORNL-6138; ON: DE85015079
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
58 GEOSCIENCES
EARTHQUAKES
RISK ASSESSMENT
EAST COAST
SEISMICITY
GROUND MOTION
SPECIFICATIONS
NUCLEAR POWER PLANTS
REACTOR SAFETY
RECOMMENDATIONS
SITE SELECTION
MOTION
NORTH AMERICA
NUCLEAR FACILITIES
POWER PLANTS
SAFETY
SEISMIC EVENTS
THERMAL POWER PLANTS
USA
220900* - Nuclear Reactor Technology- Reactor Safety
580201 - Geophysics- Seismology & Tectonics- (1980-1989)
220501 - Nuclear Reactor Technology- Environmental Aspects- Siting