AAOM Handbook

Appendix 2 - Hazard Types

• Stress - materials science subdivides this into catastrophic overstress that produces sudden failures (e.g. fracture), prolonged high stress that produces creep deformation and prolonged cyclic stress that produces fatigue failure. Similar types of results can be produced in people. Some examples of potential forms of stress are; physical/mechanical, thermal, voltage, radiation, mental, etc. • Chemical - in materials science terms this would be due to the (re)action of chemicals such as oxygen, acids, alkalis, but in a broader context could also include drugs, alcohol etc. • Wear - materials science subdivides wear into different mechanisms for the removal of material e.g. abrasion, erosion, fretting etc. • Fouling - accumulation of material e.g. silting, scaling, contamination, etc. • Obsolescence - this is not a category used in materials science but reflects a type of hazard that arises from the loss of support for either the products or services of a process, e.g. due to innovation or competition, the imposition of constrictions to the process, e.g. imposition of new standards/laws, or the loss of essential resources for the continued operation of the process, loss of people, skills or knowledge, loss of parts sources etc.

© McAlear Management Consultants 2006

Operational Planning: Set Service Strategy

Updated: August 2018

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