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
CFR Part: 
CFR Title: 

Content:
e of HFE design. The task analysis results, in turn, support the staffing and qualification analysis. 18.0-32 Revision 3 – December 2016 METHODOLOGY TO ASSESS THE WORKLOAD OF CHALLENGING OPERATIONAL CONDITIONS The methodology to assess workload of challenging operational conditions is divided into seven steps, see Figure 1. Each of these steps is described below: Figure 1: Methodology to assess the workload of challenging operational conditions 1. Identify Challenging Operating Conditions The applicant should identify the plant specific operating conditions that are challenging and create high workload using the considerations presented below. Unlike integrated system validation scenario development where all operational conditions identified are addressed in a scenario, this activity should be focused on identifying conditions that most challenge the minimum staffing level. The objective of identifying these conditions is the evaluation of the Construct Scenarios and Assign Operator Responsibilities (see Section 5) Identify Challenging Operating Conditions (see Section 1) Identify Primary Tasks (see Section 2) Identify Dependent Tasks (see Section 3) IdentifyPotential Independent Tasks (see Section 4) Analyze Workload and Determine its Acceptability (see Section 6) Develop Conclusions about the Acceptability of Workload Levels (see Section 7) 18.0-33 Revision 3 – December 2016 minimum staffing level needed to address immediate and short-term actions. Scenarios that evolve slowly and within time envelopes necessary to bring in additional staff are easier to address from a staffing perspective. The applicant should consider the following plant conditions, personnel tasks, and situational factors in their sample of challenging conditions for workload analysis. a. Plant Conditions • Consider transients and accidents starting during normal operations, plant startup, shutdown, and refueling • Consider instrumentation and control (I&C) and human-systems interface