Document: NUREG-0800
Document ID: 7916b088-fb90-4163-84fe-027bd315bcc5
Document Type: srp
Title: REVIEW OF RISK INFORMATION USED TO SUPPORT PERMANENT PLANT-
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0717/ML071700658.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.2
CFR Part: 
CFR Title: 

Content:
man-machine interface; the location of the interface(s); the complexity of the task; the conditions or context within which the operators are responding, including previous failures, previous actions, etc.; the time available to perform the task; the quality of the training (type and frequency) on the specific event; the crew interactions and their potential for recovery from errors; and the stress on the operators, • Whether the human action dependency analysis is affected, • Whether the application introduces or modifies dependencies between plant instrumentation and human actions, • Whether the screening analysis is affected. When HFEs represent responses to failures of the SSCs impacted by the change, reviewers may want to focus their resources on these HFEs in the following ways: • Identify any human actions that compensate for events affected by the proposed application, and ensure that the licensee did not claim inappropriate credit for these events. For human actions that are used to compensate for a basic event probability increasing as a result of proposed changes, licensee actions to ensure operator performance at the level credited in the risk analysis should also be a part of the change request. • Ensure that appropriate justification is provided when the licensee takes credit for post-accident recovery of failed components (repair or other non-proceduralized manual actions, such as manually forcing stuck valves to open). Reviewers should also ascertain whether the identified recovery action is obvious, feasible (given the time and physical constraints), and supportable by plant programs such as training. 19.2-56 June 2007 • Ensure that the licensee assessed whether the conditions under which the human actions are to be performed have changed significantly so that the HEP should be modified. Reviewers should also be aware that the impact of the change can be obscured if the accident sequences that do not contain affected SSCs are