Document: 10 CFR Part 100
Document ID: 85142991-3ab7-4098-809d-c586bae4df75
Document Type: cfr
Title: Geologic and seismic siting criteria.
Source: 10 CFR Part 100
Source URL: https://www.ecfr.gov/current/title-10/part-100/section-100.23
Revision Date: 
Chapter: 
Section ID: 100.23
CFR Part: 100
CFR Title: 10

Content:
§ 100.23 Geologic and seismic siting criteria. This section sets forth the principal geologic and seismic considerations that guide the Commission in its evaluation of the suitability of a proposed site and adequacy of the design bases established in consideration of the geologic and seismic characteristics of the proposed site, such that, there is a reasonable assurance that a nuclear power plant can be constructed and operated at the proposed site without undue risk to the health and safety of the public. Applications to engineering design are contained in appendix S to part 50 of this chapter . ( a ) Applicability. The requirements in paragraphs (c) and (d) of this section apply to applicants for an early site permit or combined license pursuant to Part 52 of this chapter , or a construction permit or operating license for a nuclear power plant pursuant to Part 50 of this chapter on or after January 10, 1997. However, for either an operating license applicant or holder whose construction permit was issued prior to January 10, 1997, the seismic and geologic siting criteria in Appendix A to Part 100 of this chapter continues to apply. ( b ) Commencement of construction. The investigations required in paragraph (c) of this section are not considered “construction” as defined in 10 CFR 50.10(a) . ( c ) Geological, seismological, and engineering characteristics. The geological, seismological, and engineering characteristics of a site and its environs must be investigated in sufficient scope and detail to permit an adequate evaluation of the proposed site, to provide sufficient information to support evaluations performed to arrive at estimates of the Safe Shutdown Earthquake Ground Motion, and to permit adequate engineering solutions to actual or potential geologic and seismic effects at the proposed site. The size of the region to be investigated and the type of data pertinent to the investigations must be determined based on the nature of the region surrounding