Document: 10 CFR Part 50
Document ID: 49e57355-8b5a-49a8-9cd8-52d8a5503c31
Document Type: cfr
Title: Changes, tests, and experiments.
Source: 10 CFR Part 50
Source URL: https://www.ecfr.gov/current/title-10/part-50/section-50.59
Revision Date: 
Chapter: 
Section ID: 50.59
CFR Part: 50
CFR Title: 10

Content:
§ 50.59 Changes, tests, and experiments. ( a ) Definitions for the purposes of this section: ( 1 ) Change means a modification or addition to, or removal from, the facility or procedures that affects a design function, method of performing or controlling the function, or an evaluation that demonstrates that intended functions will be accomplished. ( 2 ) Departure from a method of evaluation described in the FSAR (as updated) used in establishing the design bases or in the safety analyses means: ( i ) Changing any of the elements of the method described in the FSAR (as updated) unless the results of the analysis are conservative or essentially the same; or ( ii ) Changing from a method described in the FSAR to another method unless that method has been approved by NRC for the intended application. ( 3 ) Facility as described in the final safety analysis report (as updated) means: ( i ) The structures, systems, and components (SSC) that are described in the final safety analysis report (FSAR) (as updated), ( ii ) The design and performance requirements for such SSCs described in the FSAR (as updated), and ( iii ) The evaluations or methods of evaluation included in the FSAR (as updated) for such SSCs which demonstrate that their intended function(s) will be accomplished. ( 4 ) Final Safety Analysis Report (as updated) means the Final Safety Analysis Report (or Final Hazards Summary Report) submitted in accordance with § 50.34 , as amended and supplemented, and as updated per the requirements of § 50.71(e) or § 50.71(f) , as applicable. ( 5 ) Procedures as described in the final safety analysis report (as updated) means those procedures that contain information described in the FSAR (as updated) such as how structures, systems, and components are operated and controlled (including assumed operator actions and response times). ( 6 ) Tests or experiments not described in the final safety analysis report (as updated) means any activity where any structure, system, or