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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CFR Title: 

Content:
e that is complicated by separate, but often necessary, dependent and independent tasks, and the judgment of subject matter experts (SME) obtained in a manner conducive to obtaining realistic workload estimation. BACKGROUND Plant personnel play a diverse role in plant operations and safety. They monitor plant systems and performance and various barriers that prevent release of radioactive material. They take actions to initiate, adjust, and terminate operations as needed. They also respond to transients, accidents, and other failures. They also are responsible for managing operations-related administrative duties. Personnel are supported in these tasks by human-system interfaces (HSIs), procedures, and training. To accomplish their responsibilities, personnel work in teams. The minimum number of operators needed to fulfill all personnel roles and responsibilities is a complex question that depends on assumptions related to what the credible high-workload scenarios will be and the timeline along which additional staff are needed and available. Licensees establish a minimum staffing level to address immediate and “short-term” actions that need to be taken and the time required to augment the staff with additional personnel as needed over time. The focus of this Appendix is the minimum staffing level needed to address immediate and short-term actions. Scenarios that evolve slowly and within time envelopes required to bring in additional staff are easier to address from a staffing perspective. The U.S. Nuclear Regulatory Commission (NRC) has established minimum acceptable staffing levels in Title 10 of the Code of Federal Regulations (10 CFR) 50.54(m). However, technological advances and changes in the Conduct of Operations have led to an interest in staffing levels below those specified in the regulations. To evaluate applicant requests for staffing exemptions that allow for reduced staffing levels, the NRC review needs criteria by which these requests can be