Document: NUREG-0800
Document ID: f269e894-c94c-4ccb-b41c-6e39aa74f371
Document Type: srp
Title: HUMAN FACTORS ENGINEERING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070670253.pdf
Revision Date: 2023-06
Chapter: 18
Section ID: 18.0
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t, especially when they affect operator actions that are credited in the safety analysis report (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 ensure safety. An example of such a modification would be substituting manual actions for automatic actions for performing design functions described in the SAR. The NRC may also review certain plant modifications involving changes to the SAR as part of the change process described in 10 CFR 50.59. Additional guidance related to 10 CFR 50.59 is provided in RG 1.187 and Nuclear Energy Institute (NEI) publication 96-07, “Guidelines for 10 CFR 50.59 Implementation.” Graded Approach to Review The degree to which the NRC staff applies the review methodolgy in this SRP and evaluates an applicant’s HFE design will reflect the specific circumstances of individual applications. For example, generally the review of the HFE aspects of a new plant will entail a comprehensive, detailed evaluation (see Section II.A), while the review of individual modifications to existing designs may be less extensive. In its complete form as applied to the review of the HFE aspects of a new plant, the review process provides a comprehensive, detailed evaluation (see Section II.A). However, the level of staff review of an applicant's HFE design should reflect the unique circumstances of the review. In addition, staff reviews should also reflect risk-informed regulation and considerations. The NRC, the nuclear industry, and the public have moved to a broader consideration of risk in many activities associated with NPPs. Therefore, risk importance is taken into account when deciding which particular items to review and the depth of review necessary. This aspect of grading the review is discussed