Document: NRC Regulatory Guide
Document ID: 99fe445b-c440-4921-ba8f-841c8f236046
Document Type: regulatory_guide
Title: Nuclear Power Plant Instrumentation for Earthquakes + HISTORY - HISTORY 09/2016 – DG-1332 , Proposed Revision 3 04/2015 – Periodic Review on Revision 2 – Revise 02/1995 – DG-1033, Third Proposed Revision 2 11/1992 – DG-1016, Second Proposed Revision 2 07/1981 – Draft MS 140-5 , First Proposed Revision 2 (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1610/ML16104A220.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.12
CFR Part: 
CFR Title: 

Content:
ty-Specific Backfitting and Information Collection” (Ref. 14), and NUREG-1409, “Backfitting Guidelines,” (Ref. 15). DG-1332, Page 18 GLOSSARY acceleration sensor An instrument capable of sensing absolute acceleration and producing an analog or digital signal that can be transmitted to a recorder. accessible instruments Instruments or sensors whose locations permit ready access during plant operation without violation of applicable safety regulations, such as those of the Occupational Safety and Health Administration (OSHA) or regulations dealing with plant security or radiation protection safety. certified seismic design response spectra (CSDRS) Site-independent seismic design response spectra that have been approved by the NRC as the seismic design response spectra for an approved certified standard design nuclear power plant. certified standard design See standard design certification. channel calibration (primary calibration) The determination and, if required, adjustment of an instrument, sensor, or system such that it responds within a specific range to an acceleration, velocity, or displacement input, as applicable, or responds as intended to the provided known input. channel check The qualitative verification of the functional status of the time-history recorder and sensor. This check is an "in-situ" test and may be the same as a channel functional test. channel functional test (secondary calibration) The determination without adjustment that an instrument, sensor, or system responds to a known input of such character that it will verify that the instrument, sensor, or system is functioning in a manner that can be calibrated. containment See primary containment and secondary containment. containment foundation The foundation of the containment or reactor building including adjacent foundations if they are constructed integrally with the containment foundation. cumulative absolute velocity (CAV) The time integral of absolute acceleration over the