Document: NUREG-0800
Document ID: 383561fc-b739-42a6-b54f-40bbc4b47d03
Document Type: srp
Title: SEISMIC INSTRUMENTATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070322.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.7.4
CFR Part: 
CFR Title: 

Content:
ant seismic event, that the plant operators are provided with information to assess the need to shut down the reactor and that recorded data are available to allow engineering evaluation of the safety of continued plant operation. 2. General Design Criterion (GDC) 2 requires that SSC important to safety be designed to withstand the effects of natural phenomena such as earthquakes without loss of capability to perform their safety function. The seismic instrumentation records data used to evaluate the effects of earthquakes. Meeting GDC 2 ensures that SSC important to the safety continue to be capable of performing their safety functions if the plant is restarted following a seismic event. 3. Appendix A to 10 CFR 100 requires installation of seismic instrumentation which is capable of providing the seismic response of features important to safety so that the comparisons with that used as the design basis can be appropriately carried out. Regulatory Guide 1.12 describes instrumentation acceptable to the NRC staff for meeting the requirements of 10 CFR 100. Meeting the 10 CFR 100, Appendix A requirement and following the Regulatory Guide 1.12 guidance for seismic instrumentation assures that the appropriate seismic response data are available following a seismic event such that the plant is not operated with structures or equipment in an unsafe condition. III. REVIEW PROCEDURES For each area of review, the following review procedure is followed. The reviewer will select and emphasize material from the procedures given below, as may be appropriate for a particular case. The type, locations, operability, characteristics, installation, actuation, remote indication, and maintenance of seismic instrumentation should meet the procedures given below. Where an applicant proposes specific details different from these procedures, acceptability should be based upon meeting applicable regulations, as stated in subsection II, consistent with current proven technologies and intended