Integration of human reliability analysis into the high consequence process

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When performing a hazards analysis (HA) for a high consequence process, human error often plays a significant role in the hazards analysis. In order to integrate human error into the hazards analysis, a human reliability analysis (HRA) is performed. Human reliability is the probability that a person will correctly perform a system-required activity in a required time period and will perform no extraneous activity that will affect the correct performance. Even though human error is a very complex subject that can only approximately be addressed in risk assessment, an attempt must be made to estimate the effect of human errors. ... continued below

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7 p.

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Houghton, F.K. & Morzinski, J. December 1, 1998.

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Description

When performing a hazards analysis (HA) for a high consequence process, human error often plays a significant role in the hazards analysis. In order to integrate human error into the hazards analysis, a human reliability analysis (HRA) is performed. Human reliability is the probability that a person will correctly perform a system-required activity in a required time period and will perform no extraneous activity that will affect the correct performance. Even though human error is a very complex subject that can only approximately be addressed in risk assessment, an attempt must be made to estimate the effect of human errors. The HRA provides data that can be incorporated in the hazard analysis event. This paper will discuss the integration of HRA into a HA for the disassembly of a high explosive component. The process was designed to use a retaining fixture to hold the high explosive in place during a rotation of the component. This tool was designed as a redundant safety feature to help prevent a drop of the explosive. This paper will use the retaining fixture to demonstrate the following HRA methodology`s phases. The first phase is to perform a task analysis. The second phase is the identification of the potential human, both cognitive and psychomotor, functions performed by the worker. During the last phase the human errors are quantified. In reality, the HRA process is an iterative process in which the stages overlap and information gathered in one stage may be used to refine a previous stage. The rationale for the decision to use or not use the retaining fixture and the role the HRA played in the decision will be discussed.

Physical Description

7 p.

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OSTI as DE99000685

Source

  • International conference on probabilistic safety assessment and management (PSAM4), New York, NY (United States), 13-18 Sep 1998

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  • Other: DE99000685
  • Report No.: LA-UR--98-1745
  • Report No.: CONF-980907--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 296636
  • Archival Resource Key: ark:/67531/metadc682364

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  • December 1, 1998

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  • July 25, 2015, 2:20 a.m.

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  • March 1, 2016, 5:38 p.m.

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Houghton, F.K. & Morzinski, J. Integration of human reliability analysis into the high consequence process, article, December 1, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc682364/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.