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Related Concept Videos

Principal Stresses: Problem Solving01:15

Principal Stresses: Problem Solving

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When analyzing two planes intersecting at right angles under the influence of shearing, tensile, and compressive stresses, it is essential to identify principal planes, maximum shearing stress, and principal stresses. To find the principal planes, apply a formula that equates them to twice the shearing stress divided by the difference between tensile and compressive stresses.
304
Types of Stressors01:23

Types of Stressors

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A stressor is any event, condition, or stimulus that triggers stress and causes a physical or psychological response in the body. Stressors can be categorized into three main types: catastrophes; significant life changes; and daily hassles, including social stress. Each can be detrimental to physical and mental well-being.
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Psychological Responses to Stress01:20

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Psychological responses to stress encompass the various cognitive and emotional reactions individuals experience when faced with challenging or threatening situations, such as a job loss. Prolonged exposure to stressors can disturb emotional balance, increasing negative emotions (e.g., anxiety and sadness) and diminishing positive emotions (e.g., joy and satisfaction). These persistent emotional shifts are associated with an increased risk of both physical illness and mental health issues, such...
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Applications of Stress01:04

Applications of Stress

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Consider a structure made of a boom and a rod designed to support a load. These two components are connected by a pin and stabilized by brackets and pins. The boom and the rod are detached from their supports to assess the different stresses imposed on this structure, and a free-body diagram is drawn. Then, all the forces applied, including the load acting on the structure, are identified. The reaction forces exerted on both the boom and the rod are computed using the equilibrium equations.
The...
400
Physiological Foundation of Stress01:24

Physiological Foundation of Stress

157
Stress triggers a coordinated physiological response involving the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) axis. This dual activation ensures that the body is prepared for both immediate and prolonged stress management. The process begins with the perception of a stressor. This initial phase activates the SNS, leading to the rapid release of adrenaline (epinephrine) from the adrenal glands.
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Stress Concentrations01:13

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The concept of stress concentration is crucial for understanding how materials respond under bending stresses, particularly when there are irregularities or discontinuities in the material's geometry. Normally, stress in a symmetric member subjected to pure bending is assumed to be uniformly distributed across the entire cross-section. However, this assumption does not hold when there are variations in the cross-sectional geometry or the presence of notches and holes.
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Identifying NPP operator stressors using grounded theory.

Ye Wang1,2, Xiliang Tao3, Wenqiang Peng3

  • 1School of Nuclear Science and Technology, University of South China, Hengyang, 421001, Hunan, China.

Scientific Reports
|August 20, 2025
PubMed
Summary
This summary is machine-generated.

Psychological stress in nuclear power plant (NPP) operators stems from seven key factors, including task complexity and communication load. Understanding these stressors is vital for enhancing system safety and operational efficiency in NPPs.

Keywords:
Grounded theoryMultidimensional loadNuclear power plant operatorsPsychological stress

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Area of Science:

  • Human Factors Engineering
  • Occupational Psychology
  • Nuclear Engineering

Background:

  • Nuclear power plant (NPP) operators face high-stakes environments demanding critical decision-making.
  • Psychological stress significantly impacts NPP system safety and operational efficiency.
  • Existing research lacks systematic analysis of stress factors in NPP operations.

Purpose of the Study:

  • To systematically identify and categorize the factors influencing psychological stress in NPP operators.
  • To develop a multidimensional model of psychological stress based on operator experiences.
  • To provide a foundation for improving operator well-being and plant safety.

Main Methods:

  • Grounded theory approach applied to qualitative data.
  • Semi-structured interviews conducted with 25 NPP operators.
  • Open, axial, and selective coding used for data analysis.

Main Results:

  • Identified seven primary factors contributing to operator psychological stress: interface management, task complexity, alarm load, transient/emergency tasks, shift work, error handling, and communication.
  • Demonstrated that these stressors interact and compound, increasing cognitive and psychological burdens.
  • Developed a multidimensional load model of psychological stress for NPP operators.

Conclusions:

  • Psychological stress in NPP operators is multifactorial and interconnected.
  • The identified factors provide a comprehensive framework for understanding operator stress.
  • Further research is recommended to explore the dynamic interplay of these stress factors.