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Frontiers of Engineering Reports on Leading-Edge Engineering from the 2008 Symposium (2009) / Chapter Skim
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Human Reliability Analysis in Cognitive Engineering and System Design--Ronald Laurids Boring
Pages 103-110

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From page 103...
... , typically part of an overall probabilistic risk assessment (PRA) , which focuses primarily on verifying the safe performance of human actions Despite similarities in focus, the main difference between CE and HRA is in the timing of when they are used.
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From page 104...
... Nuclear Regulatory Commission, 1975) , which addresses the safety of nuclear power plants.
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From page 105...
... A failed hardware system can cause humans to fail at their prescribed tasks, or a human error can cause a hardware system to fail prematurely or unexpectedly. A hardware system may be designed as a failsafe backup for human actions errors, such as an automatic pressure-venting valve that can mitigate system damage if the human operator fails to regulate pressure properly.
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From page 106...
... The event tree is read as a sequence from left to right. Boring Figure 2 R01394 In an HRA, human activities are modeled as part of a fault tree, or event tree (see bitmapped fixed image Figure 2)
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From page 107...
... A prospective HRA is an attempt to assess the risk of something that hasn't actually happened, such as an extremely rare event (e.g., human performance in a nuclear power plant control room during a seismic event or fire)
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From page 108...
... . As new nuclear power and aerospace systems are built, qualitative HRAs can complement other HFE and CE techniques to anticipate sources of human errors and, ultimately, to help design the system to prevent those errors from occurring.
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From page 109...
... 2007a. Meeting Human Reliability Requirements through Human Factors Design, Testing, and Modeling.
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From page 110...
... 2004. Human Reliability Analysis in Probabilistic Safety Assessment for Nuclear Power Plants.
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Key Terms

  • reliability analysis
  • human performance
  • nominal hep
  • human actions
  • human error

  • human errors
  • regulatory commission
  • nuclear regulatory
  • prospective hras
  • ergonomics society

  • fixed image
  • hra methods
  • bitmapped fixed
  • prospective hra
  • power plant

  • psf multiplier
  • event tree
  • probabilistic safety
  • adverse events
  • resilience engineering

  • program review
  • hra method
  • sandia national
  • psf value
  • fault tree

  • review model
  • safety assessment
  • dynamic human
  • quantifying human
  • model human


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