Document: NUREG-0800
Document ID: 27e2deed-f547-41fe-88e0-ccb5d19e77a4
Document Type: srp
Title: -13
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1230/ML12302A003.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.3
CFR Part: 
CFR Title: 

Content:
Draft Revision 5 – August 2013 deformation features (including faults related to subduction zones) can exist as blind faults that might be expressed on the surface or near-surface by actively growing folds or areas of uplift and subsidence. 3. Timing of Deformation. The reviewer evaluates the applicant’s assessment for the ages of past deformation events to determine if a sufficient technical basis has been established for the age estimates. The reviewer determines whether geochronological methods used by the applicant are based on generally acceptable procedures, such as those described in NUREG/CR-5562 or ‘Paleoseismology’. In cases for which the applicant employs unusual or untested age determination techniques, staff will require documentation of the techniques including verification of the precision and accuracy of associated ages. Accuracy and precision of all age-dating techniques used in the applicant's analysis should be carefully documented and considered in the analysis of deformation potential. In general, multiple samples should be analyzed, and more than one dating method applied to each geologic element that is significant in estimating age of a paleodeformation event. 4. Correlation of Earthquakes with Tectonic Features. The reviewer assesses how the applicant has investigated correlation of earthquakes with potential tectonic sources in conjunction with consideration of SRP Section 2.5.2. Historical earthquake data derived from review of SRP Section 2.5.2 are compared with known tectonic features in the site vicinity and a determination is made regarding whether any earthquakes can reasonably be associated with these tectonic structures. This determination includes an evaluation of the hypocentral error estimates of the earthquakes. When available, earthquake source mechanisms should be evaluated with respect to fault type (reverse, normal, strike-slip) and characteristics such as orientation and slip history. The applicant shall evaluate