Document: 10 CFR Part 100
Document ID: d2c08922-843e-4ce7-a3ce-7cca7b6badef
Document Type: cfr
Title: Definitions.
Source: 10 CFR Part 100
Source URL: https://www.ecfr.gov/current/title-10/part-100/section-100.3
Revision Date: 
Chapter: 
Section ID: 100.3
CFR Part: 100
CFR Title: 10

Content:
uated from a specific area, or instructed to take shelter, on a timely basis will depend on many factors such as location, number and size of highways, scope and extent of advance planning, and actual distribution of residents within the area. Population center distance means the distance from the reactor to the nearest boundary of a densely populated center containing more than about 25,000 residents. Power reactor means a nuclear reactor of a type described in § 50.21(b) or § 50.22 of this chapter designed to produce electrical or heat energy. Response spectrum is a plot of the maximum responses (acceleration, velocity, or displacement) of idealized single-degree-of-freedom oscillators as a function of the natural frequencies of the oscillators for a given damping value. The response spectrum is calculated for a specified vibratory motion input at the oscillators' supports. Safe Shutdown Earthquake Ground Motion is the vibratory ground motion for which certain structures, systems, and components must be designed pursuant to appendix S to part 50 of this chapter to remain functional. Surface deformation is distortion of geologic strata at or near the ground surface by the processes of folding or faulting as a result of various earth forces. Tectonic surface deformation is associated with earthquake processes. Testing reactor means a testing facility as defined in § 50.2 of this chapter . [ 61 FR 65175 , Dec. 11, 1996]