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:
s stated above, consistent with current proven technologies and intended use of the recorded information.9 1. Comparison with Regulatory Guide 1.12 The seismic instrumentation program is considered to be acceptable if it is in accordance with Regulatory Guide 1.12 (see also Table 3.7.4-1). This guide recommends provision 10 of a triaxial time history accelerograph and a triaxial response spectrum recorder to measure the input time history and response spectra directly. Additional time history accelerographs, response spectrum recorders, peak accelerographs, and seismic switches are recommended to measure the responses of structures, equipment, and components at selected locations. The bases for elements of the proposed seismic instrumentation program that differ from Regulatory Guide 1.12 must be provided. 3.7.4-3 DRAFT Rev. 2 - April 1996 2. Location and Description of Instrumentation For the construction permit review, there should be a commitment by the applicant to 11 provide the following instruments at the given locations: a. A triaxial time history accelerograph in the free field or at the containment foundation, with readout in the control room. b. A seismic switch on the containment foundation, with readout in the control room. c. A triaxial response spectrum recorder on the containment foundation, with readout in the control room. In addition, a commitment to provide the recommended additional instrumentation at the various response locations should be made without providing details of actual locations. For the operating license review, a detailed seismic instrumentation plan including details of the locations, mounting and descriptions of the instrumentation should be provided. To be acceptable, the remaining instrumentation locations are related to the locations of the output vibratory motions used in the seismic design. Typical general locations are: a. Containment structure or reactor building. b. Reactor piping. c. Reactor equipment. d. Other Category