Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - In what ways are designers' and operators' reasonable-world assumptions not reasonable assumptions?
AU - Busby, J. S.
AU - Chung, P. W. H.
N1 - Accepted 22/01/2003
PY - 2003/3
Y1 - 2003/3
N2 - Although the technical reliability of complex process plant generally continues to improve, such systems remain vulnerable to unmet assumptions on the part of designers, operators and maintenance staff. The purpose of this study was to characterize the nature of these assumptions, particularly those that were implied in people's activity rather than those that were explicitly invoked. Inferences about the assumptions were made from a set of accident reports. This characterization was then used as the basis of a tool that could help people examine how either their own or other peoples’ assumptions could imperil a system. Such a tool both structures the process of testing assumptions and helps synthesize the knowledge provided by historical failures. The tool was evaluated with a variety of organizations and used in a case study, where it contributed to the process of risk analysis in a variety of ways.
AB - Although the technical reliability of complex process plant generally continues to improve, such systems remain vulnerable to unmet assumptions on the part of designers, operators and maintenance staff. The purpose of this study was to characterize the nature of these assumptions, particularly those that were implied in people's activity rather than those that were explicitly invoked. Inferences about the assumptions were made from a set of accident reports. This characterization was then used as the basis of a tool that could help people examine how either their own or other peoples’ assumptions could imperil a system. Such a tool both structures the process of testing assumptions and helps synthesize the knowledge provided by historical failures. The tool was evaluated with a variety of organizations and used in a case study, where it contributed to the process of risk analysis in a variety of ways.
KW - human factors
KW - hazards
KW - assumptions
U2 - 10.1205/095758203321832589
DO - 10.1205/095758203321832589
M3 - Journal article
VL - 81
SP - 114
EP - 120
JO - Process Safety and Environmental Protection
JF - Process Safety and Environmental Protection
SN - 0957-5820
IS - 2
ER -