Document: NUREG-0800
Document ID: 51b93b24-7bff-4144-949f-36812854b7aa
Document Type: srp
Title: HUMAN FACTORS ENGINEERING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1612/ML16125A114.pdf
Revision Date: 2023-06
Chapter: 18
Section ID: 18.0
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Content:
BNL) Technical Report No. 20918-1-2015. The report is available on the U.S. Nuclear Regulatory Commission (NRC) public website within the Agencywide Documents Access & Management System (ADAMS) public document subdirectory under Accession No. ML15083A205. INTRODUCTION This attachment provides a methodology to identify high-workload operational conditions and analyze the workload associated with them. The methodology is rooted in task analysis and relies on the identification of appropriate challenging scenarios; realistic portrayals of task performance 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 diverse roles 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 typically 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 Attachment is the minimum staffing level needed to address immediate and short-term actions. Scenarios that evolve slowly and within time envelopes