Document: NUREG-0800
Document ID: 90555c0d-360d-4a21-9859-bfb3cf6f2aea
Document Type: srp
Title: SEISMIC INSTRUMENTATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1332/ML13324A570.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.7.4
CFR Part: 
CFR Title: 

Content:
in Subsection II. 1. Comparison with RG 1.12. The seismic instrumentation program is checked to ensure that the instrumentation is in accordance with the guidelines of RG 1.12. Any differences between the proposed and the regulatory guide seismic instrumentation, which have not been adequately justified, are identified and the applicant is informed of the need for additional technical justification. The locations and descriptions of the seismic instrumentation are reviewed to determine that these are in accordance with the acceptance criteria of Subsection II of this SRP section. The reviewer should verify that the applicant demonstrates that suitable instrumentation is provided to promptly evaluate the seismic response of safety-related or risk significant plant features after an earthquake. If the instrumentation provided is judged to be insufficient, the need for additional instrumentation is transmitted to the applicant. The program is checked to verify that the triggering of the free-field or any foundation- level accelerograph is annunciated in the control room. If there is no provision for both audio and visual signals in the applicant's seismic instrumentation plan, the applicant is so informed with a request for compliance. The program is checked to ensure that the provisions for in-service testing, remote alarm to indicate actuation, recording capabilities, sufficient dynamic range and sampling rate with a low and adjustable actuating level or trigger are in accordance with RG 1.166. 2. Comparison with RG 1.166. The seismic instrumentation program is checked to ensure that the pre-earthquake planning and post-earthquake actions are in accordance with RG 1.166. Any differences between the proposed and the regulatory guide seismic instrumentation, which have not been adequately justified, are identified and the applicant is informed of the need for additional technical justification. The pre-earthquake planning and post-earthquake actions are checked to