Task Complexity as a Factor for Human Reliability Assessment

  • Per Øivind Braarud
  • Karin Laumann
  • Håkan Svengren
Conference paper


Context or Performance Shaping Factors are important elements of Human Reliability Assessment methods. This paper describes an approach to task complexity for process control, describes the concept as a context factor for human reliability, and report example of results on task complexity from a simulator experiment on human performance in accident operation.


Task Complexity Feed Water Subject Matter Expert Information Load Relief Valve 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    Henneman, R. L. and Rouse, W. B. On measuring the complexity of monitoring and controlling large-scale systems. IEEE Transactions on Systems, Man, and Cybernetics, 1986; 2: 193–207CrossRefGoogle Scholar
  2. 2.
    Campbell, D. J. Task Complexity: A Review and Analysis. Academy of Management Review. 1988; 13: 40–52Google Scholar
  3. 3.
    Braarud, P. Ø. Subjective task complexity in the control room. Halden Work Report 621. OECD Halden Reactor Project, Halden, Norway. 2000Google Scholar
  4. 4.
    Swain, A. D. and Guttman, H. E. Handbook of Human Reliability Analysis. NUREG/CR-1278. U.S. Nuclear Regulatory Commission, 1983Google Scholar
  5. 5.
    Technical Basis and Implementation Guidelines for A Technique for Human Event Analysis (ATHEANA) NUREG-1624, Rev.1. U.S. Nuclear Regulatory Commission, 2000Google Scholar
  6. 6.
    Hollnagel, E. Cognitive Reliability and Error Analysis Method (CREAM). Elsevier Science Inc, New York, 1998Google Scholar
  7. 7.
    Gertman, D. et. al. SPAR-H Method. NUREG/CR-draft. U.S. NR C, 2003Google Scholar

Copyright information

© Springer-Verlag London 2004

Authors and Affiliations

  • Per Øivind Braarud
    • 1
  • Karin Laumann
    • 1
  • Håkan Svengren
    • 1
  1. 1.Institute for Energy TechnologyOECD Halden Reactor ProjectHaldenNorway

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