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:
o the NRC staff for Implement ing specific parts of the Commission's regulations, techniques used by the staff in evaluating specific problems or postulated accidents, and data needed by the NRC staff In Its review of applications for permits and licenses. Regulatory guides are not substitutes for regulations, and com pliance with them is not required. Methods and solutions different from those set out in the guides will be acceptable if they provide a basis for the findings requisite to the issuance or continuance of a permit or license by the Commission. This guide was Issued after consideration of comments received from the public. Comments and suggestions for Improvements In these guides are encouraged at all times, and guides will be revised, as appropriate, to accommodate comments and to reflect new Information or experience. Written comments may be submitted to the Rules Review and Directives Branch, DFIPS, ADM, U.S. Nuclear Regulatory Commission, Washing ton, DC 20555-CO1. Systems," requires, in part, that electric power systems important to safety be designed to permit periodic test ing, including periodic testing of the performance of the components of the system and the system as a whole. The testing should be carried out under condi tions as close to design as practical and should involve the full operational sequence, including operation of portions of the protection system, as well as the trans fer of power among the nuclear power unit, the offsite power system, and the onsite power system. Criterion XI, "Test Control," of Appendix B, "Quality Assur ance Criteria for Nuclear Power Plants and Fuel Re processing Plants," to 10 CFR Part 50 requires, in part, that a test program be established to ensure that all testing, including operational testing required to dem onstrate that systems and components will perform sat isfactorily in service, is identified and performed in ac cordance with written test procedures. This regulatory guide describes a method