Document: NUREG-0800
Document ID: 711747d3-335d-42bb-b30d-17cc0f6162ed
Document Type: srp
Title: SEISMIC INSTRUMENTATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340571.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.7.4
CFR Part: 
CFR Title: 

Content:
vice inspection program described by the applicant is reviewed to assure that the acceptance criteria of subsection II.5 of this SRP section are met. IV. EVALUATION FINDINGS The reviewer verifies that sufficient information has been provided and his review supports conclusions of the following type, to be included in the staff's safety evaluation report: The staff concludes that the seismic instrumentation system provided for the plant is acceptable and meets the requirements of General Design Crite- rion 2, 10 CFR Part 100, Appendix A and 10 CFR Part 50, § 50.55a. This conclusion is based on the following: The applicant has met the requirements of 10 CFR Part 100, Appendix A by providing the instrumentation that is capable of measuring the effects of an earthquake which meets the requirements of GDC 2. The applicant has met the requirements of 10 CFR Part 50, § 50.55a by providing the inservice inspection program that will verify operability by performing channel 3.7.4-5 Rev. 1 - July 1981 checks, calibrations, and functional tests at acceptable intervals. In addi-I tion, the Installation of the specified seismic instrumentation in the reac- tor containment structure and at other Category I structures, systems, and components constitutes an acceptable program to record data on seismic ground motion as well as data on the frequency and amplitude relationship of the seismic response of major structures and systems. A prompt readout of pertinent data at the control room can be expected to yield sufficient information to guide the operator on a timely basis for the purpose of evaluating the seismic response in the event of an earthquake. Data obtained from such installed seismic instrumentation will be sufficient to determine that the seismic analysis assumptions and the analytical model used for the design of the plant are adequate and that allowable stresses are not exceeded under conditions where continuity of operation is intended. Provision of such seismic