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:
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 procedures or administrative con trols shall provide for verifying the open circuit or verifying that temporary con nections are restored after testing. 3. The description for a logic system functional test, as noted in Section 6.3.5 of IEEE Std. 338-1987, implies that the sensor is included. A logic system functional test is to be a test of all logic compo nents (i.e., all relays and contacts, trip units, solid state logic elements, etc.) of a logic circuit, from as close to the sensor as practicable up to but not in cluding the actuated device, to verify operability. D. IMPLEMENTATION The purpose of this section is to provide informa tion to applicants and licensees regarding the NRC staff's plans for using this guide. Except in those cases in which an applicant pro poses an acceptable alternative method for complying with specified portions of the Commission's regula tions, the method described in this guide will be used in the evaluation of submittals in connection with applica tions for construction permits and operating licenses. It will also be used to evaluate submittals from operating reactor licensees that propose system modifications voluntarily initiated by the licensee if there is a clear nexus between the proposed modifications and this guidance. 1.118-2 VALUE/IMPACT STATEMENT A draft Value/Impact Statement was published with the draft of this guide when it was published for public comment (Task DG-1028, September 1994). No changes were necessary, so a separate value/impact statement for the final guide has not been prepared. A copy of the draft value/impact statement is avail able for inspection or copying for a fee in the Commission's Public Document Room at 2120 L Street NW., Washington, DC, under Task DG-1028. 1.118-3 UNITED STATES NUCLEAR REGULATORY