Document: NRC Regulatory Guide
Document ID: da55f4e3-0344-4286-b684-2ebd9c82115e
Document Type: regulatory_guide
Title: Independence Between Redundant Standby
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003739924.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.6
CFR Part: 
CFR Title: 

Content:
by power sources. 5. A single generator driven by a single prime mover is acceptable as the standby power source for each a-c load group of the size and characteristics typical of recent applications. If other arrangements such as multiple diesel generators operated in parallel or mul tiple prime movers driving a single generator are proposed, the applicant should demonstrate that the proposed arrangement has an equivalent reliabil ity. Common mode failures as well as random single failures should be con sidered in the analysis. 6.2