Document: NUREG-0800
Document ID: 80cafbe7-f4f0-4366-8dd3-76fec74d85a7
Document Type: srp
Title: HUMAN FACTORS ENGINEERING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0409/ML040920139.pdf
Revision Date: 2023-06
Chapter: 18
Section ID: 18.0
CFR Part: 
CFR Title: 

Content:
odifications - The'NRC staff conducts reviews of license amendment applications involving voluntary modifications of HFE aspects of HSIs. This chapter can be used to review changes or modifications to the control room and HSIs outside the control room. 'Modifications may be extensive such as a large-scale modernization of control room HSIs, using 'computer-based technology as part of a digital instrumentation and control (I&C) upgrade program. Such a program can result in substantial modifications to alarms,.controls, and displays that -are associated with structures, systems, and components (SSCs) important to safety. The NRC may also review certain plant modifications involving changes to the FSAR as part of the change process described in I OCFR 50.59. Guidance related to 10 CFR 50.59 is provided in Regulatory Guide (RG) 1.187, OGuidance for Implementation of 10 CFR 50.59, Changes, Tests, and Experiments," (NRC, 2000) and Nuclear Energy Institute (NEI) publication 96-07, "Guidelines for 10 CFR 50.59 Implementation," (NEI, 2000). 3. Review of the HFE Aspects of Modifications Involving Human Actions - The NRC staff reviews voluntary modifications to verify they are acceptable. This chapter can also be used to review changes or modifications to licenses for nuclear power plants that include changes to human actions. While HSI modemization may be a large-scale modification, even smaller-scale modifications may be risk-important, especially when they affect operator actions that are credited in the'SAR. An HFE review is conducted if such a modification affects the role of personnel or the tasks they perform and is potentially significant to plant safety. Modifications affect the role or tasks of personnel if they impose new or different demands on them to operate or maintain the plant, or otherwise maintain safety. An example of such a modification would be substituting manual actions for automatic actions for performing design functions described in the updated final