Document: NUREG-0800
Document ID: eedf1a7c-578e-463a-9608-b06af6312cf1
Document Type: srp
Title: HUMAN FACTORS ENGINEERING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1310/ML13108A095.pdf
Revision Date: 2023-06
Chapter: 18
Section ID: 18.0
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Content:
pidly changing technology could cause the approved design to be obsolete prior to construction, • as-built information (e.g., specific measurements) needed to complete the design is unavailable, • as-procured information needed to complete the design is unavailable. If an applicant proposes using this option, the staff will verify that at least one of these three conditions exists by reviewing the basis for the applicant’s proposal and that the proposal is limited to the only those elements to which the condition applies. 18.0-12 Draft Revision 3 – July 2015 When DAC is applied, the HFE design process for the applicable element is submitted as an implementation plan. The reviewer evaluates this implementation plan against the acceptance criteria for the associated NUREG-0711 element. Reviewers should note that this review not only verifies method validity but also ensures the process is sufficiently detailed and measurable that there is reasonable assurance that the process will result in a safe design product. The implementation plan also establishes specific acceptance criteria for an ITAAC if it is decided that an ITAAC is needed. d. The HFE reviews should include nonsafety-related HSIs for the following reasons: • On integrated digital control systems, operators use the nonsafety-related control system if it is available for responding to plant events. • Inconsistent HFE design between the nonsafety systems and the safety systems could potentially increase error rates. The operator would have to use a different, infrequently used configuration on the safety related components. • Alarm systems and large screen displays are nonsafety-related systems providing significant input into command and control activities, event diagnostics, and operator situational awareness. • Nonsafety systems and functions can divert the operator’s attention. 3. Verification that the HFE design conforms to industry standards a. An acceptable standard is described in