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:
pecific 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 use of the recorded information.14 1. Comparison with Regulatory Guide 1.12 The seismic instrumentation program is checked to assure that the instrumentation is in accordance with the guidelines of Regulatory Guide 1.12. Any differences between the proposed and the regulatory guide seismic instrumentation, which have not been 15 adequately justified, are identified and the applicant is informed of the need for additional technical justification. 2. Location and Description of Instrumentation At the operating license stage, the locations and descriptions of the seismic instrumentation are reviewed to determine that these are in accordance with the acceptance criteria of subsection II.2 of this SRP section. If the instrumentation provided is judged to be insufficient, the need for additional instrumentation is transmitted to the applicant. DRAFT Rev. 2 - April 1996 3.7.4-6 3. Control Room Operator Notification The seismic instrumentation is checked to verify that the seismic switch located at the foundation of the containment structure or in the free field is connected to event indicators that are located in the control room, so that a signal is given when the preset threshold level is exceeded. 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. 4. Comparison of Measured and Predicted Responses The criteria and procedures that will be used to compare measured responses of Category I structures and selected components in the event of an earthquake with the results of the seismic system and subsystem analyses are checked to verify that sufficient information as specified in subsection II.4 of this SRP section is included. Any deficiency in the required