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A job safety analysis (JSA) is a procedure that helps integrate accepted safety and health principles and practices into a particular task or job operation. The goal of a JSA is to identify potential hazards of a specific role and recommend procedures to control or prevent these hazards.
When used as part of an aviation hazard analysis, a "Likelihood" is a specific probability. It is the joint probability of a hazard occurring, that hazard causing or contributing to an aircraft accident or incident, and the resulting degree of loss or harm falling within one of the defined severity categories.
For example, if employees must work high above the ground, the hazard can be eliminated by moving the piece they are working on to ground level to eliminate the need to work at heights. However, often elimination of the hazard is not possible because the task explicitly involves handling a hazardous agent.
Based on T.P. Wright's original work on the man-machine-environment triad [3] at Cornell University, the 5M model incorporates a diagram of 3 interlocking circles and one all-encompassing circle.
The analysis method affects the type of filter used. For gravimetric analysis , non- hygroscopic materials are selected because their masses are less affected by changes in humidity. For microscopy, cellulose ester or polycarbonate membranes are preferred as the former can be rendered transparent, while the latter have a smooth collection surface.
More precisely, risk assessment identifies and analyses potential (future) events that may negatively impact individuals, assets, and/or the environment (i.e. hazard analysis). It also makes judgments "on the tolerability of the risk on the basis of a risk analysis" while considering influencing factors (i.e. risk evaluation).
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