Document: NRC Regulatory Guide
Document ID: d2f8b8ab-1272-4d17-99b7-fc17b03f4992
Document Type: regulatory_guide
Title: Periodic Testing of Electric Power and Protection Systems
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003739468.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.118
CFR Part: 
CFR Title: 

Content:
pared by Working Group 3.0 of Subcommittee 3, "Operations, Surveillance and Testing," of the IEEE Nuclear Power Engineering Committee and was approved by the IEEE Standards Board on September 10, 1987 (reaffirmed in 1993). The standard provides design and operational criteria for the performance of periodic testing as part of the surveillance program of nuclear power plant safety sys tems. The periodic testing consists of functional tests and checks, calibration verification, and time response measurements, as required, to verify that the safety system performs to meet its defined safety functions. The system status, associated system documentation, test intervals, and test procedures during operation are also addressed. C. REGULATORY POSITION Conformance with the requirements of IEEE Std. 338-1987, "Criteria for the Periodic Surveillance Testing of Nuclear Power Generating Station Safety Systems," provides a method acceptable to the NRC staff for satisfying the Commission's regulations with respect to periodic testing of electric power and protec tion systems if the following exceptions are complied with: 1. The definitions of "safety systems," "safety func tion," and "safety group" in IEEE Std. 603-1991,1 "Criteria for Safety Systems for Nu clear Power Generating Stations," are used instead of the definitions in IEEE Std. 338-1987. 2. Both Sections 5(15) and 6.4(5) of IEEE Std. 338-1987 are replaced by the following: Procedures for periodic tests shall not require makeshift test connections except as follows: (1) Temporary jumper wires may be used with safety systems that are provided with facilities specifically designed for the connection of portable test equip ment. These facilities shall be consid ered part of the safety system and shall meet all the requirements of IEEE Std. 338-1987. (2) Removal of fuses or opening a breaker is permitted only if such action causes trip of the associated channel or actuation of the logic of the associated load group. (3) Test