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Appendix 4-1

ERROR PRONE SITUATIONS

Reproduced courtesy of the American Petroleum Institute (see Reference 3 above). A check-list of work situations that could lead to human errors is listed below, based on Lorenzo.

•incomplete, inadequate, out of date, or non-existent procedures

•poor or misleading instrumentation

•lack of competence and knowledge

•conflicting priorities, especially between safety and production

•poor labeling

•inadequate feedback

•non-enforcement of policies and procedures

•excessive spurious trips, causing protective instruments to be defeated

•poor communications

•unsatisfactory plant layout

•control systems that are over-sensitive

•mental overload during emergencies

•error prone situations, typically with excessive manual operations, inadequate interlocks, or wrong use of interchangeable fittings

•improper tools and test equipment

•poor housekeeping

•excessive demand on operator vigilance

•software or control hardware faults

•poor ergonomics