Unwanted energy release concept

There are two significant thought processes, one built on the other, of which knowledge is a requirement in professional safety practice. They are Haddon s unwanted energy release concept, extended by him to include exposures to hazardous environments, and the concepts on which MORT (management oversight and risk tree) was developed. 

All hazards are not addressed by the unwanted energy release concept. Examples are the potential for asphyxiation from entering a confined space filled with inert gas, or inhalation of asbestos fibers. But aU hazards are encompassed within a goal that is to avoid both unwanted energy releases and exposures to hazardous environments. Many authors have recognized the importance of Haddon s writings. 

Relate Hadden s unwanted energy release concept to the hierarchy of controls... 

Provide general design guidelines based on the unwanted energy release concept... 

Keeping Haddon s unwanted energy release concept in mind will be particularly beneficial as managements, supervisors, engineers, designers, and safety professionals... 

In MORT concepts, unwanted energy releases and hazardous environmental conditions are significant causal factors. McClay approaches the subject of unwanted energy releases and introduces mass as an element in this manner ... 

HADDON S UNWANTED ENERGY RELEASE AND HAZARDOUS ENVIRONMENT CONCEPT... 

Its thought process could also serve well the safety professional who participates in design concept discussions. MORT is soundly based on the unwanted energy release and environmental exposure concept, and its use leads to a good understanding of hazards, exposures, and risks. 

Dr. William Haddon was the first director of the National Highway Safety Bureau. He was the originator of the unwanted energy release theory. Haddon s concept is that unwanted transfers of energy can be harmful (and wasteful) and that a systematic approach to limiting the possibility of their occurrence should be taken. His work is considered seminal. 

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