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:
rify that the pump has been turned on and is operating properly. These subtasks are the detailed means by which the higher-level plant control task is accomplished. b. The applicants should include an analysis of the operator tasks associated with new design features, even when the tasks are mainly cognitive activities such as monitoring. Additional Information: For example, in a highly automated plant, operators will spend considerable time and effort monitoring the automation and assessing its performance. Cognitive task analysis techniques may to useful for analyzing such cognitive tasks. In summary, the analysis of the operators’ primary tasks may require a combination of procedures, procedure guidelines, and task analyses to identify all of the detailed tasks and activities that operators will need to perform during the challenging operating conditions. 3. Identify Dependent Tasks a. For each of the challenging operating conditions, the applicant should identify the dependent tasks, which operators need to perform in support of the primary tasks. Additional Information: Dependent tasks are those not specifically part of the procedure-driven primary tasks, but which operators still have to perform in the same time frame. When such tasks are performed in the same time period as the primary tasks, they contribute to crew’s workload, may introduce distractions or interruptions, and reduce the time available to perform primary tasks. Dependent tasks are divided into two categories: Generic dependent tasks and plant-specific dependent tasks. Generic tasks are those that apply to all or most plants and can be further categorized as administrative tasks, communications, and system/equipment-related actions. Examples of generic dependent tasks are shown in Table 1. Plant-specific dependent tasks are unique to the applicant’s design. Applicants should systematically analyze the plant design, the use of new technologies and new concepts of operations to identify