Document: NUREG-0800
Document ID: f5ba9b07-c36e-4c99-a4af-50271ed55f35
Document Type: srp
Title: SURFACE FAULTING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340599.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.3
CFR Part: 
CFR Title: 

Content:
en faults are identified in the site vicinity, it must be demonstrated that the faults are not capable. This is accomplished by determining the ages of the faults by absolute age dating (radiometric), associating the faulting with regional tectonic activity of known age, stratigraphic or geomorphic evidence, etc. Numerous age-dating techniques (principally radiometric) are discussed in Reference 16. In such cases the staff will carry out limited site obser- vations and investigations of its own such as examinations of excavations. In some cases, the staff may select samples from shear zones for subsequent dating analysis. Applicants usually trench in the areas where major facilities are to be located. . 2.5.3-4 Rev. 2 - July 1981 Subsection 2.5.3.1 is evaluated by conducting an independent literature search and cross-comparing the results with the information submitted in the SAR. The comparison should show that the conclusions presented by the applicant are based on sound data, are consistent with the published reports of experts who have worked in the area, and are consistent with the conclusions of the staff and its advisors/consultants. If the applicant's conclusions and assumptions conflict with the literature, substantive investigative results to support those conclusions must be submitted to the staff for review. Subsection 2.5.3.2 is evaluated by first determining through a literature search that all known evidences of fault offset have been considered in the investigation. The results of the applicant's site investigations are studied and cross-compared in detail to see if there is evidence of existing or poten- tial displacements. If such evidence is found, additional investigations such as field mapping, geophysical investigations, borings, trenching, etc., must be carried out to demonstrate that there is no offset or to define the charac- teristics of the fault if it does exist. Subsection 2.5.3.3 is reviewed in conjunction with the consideration of SRP