662 HAZWOPER for General Site Workers III

What is "Exposure"?

"Exposure" is the second variable in the accident formula. Exposure is generally defined as "the condition of being exposed," or as "a position in relation to a hazard." In this course, we will consider these three forms of exposure: physical; environmental; and potential exposure.

Physical exposure: We may think of this form of exposure as "arm's length" exposure. If any part of the body can be injured because of proximity to a danger zone, a physical exposure exists. For instance, if an employee removes a guard and works around moving parts that could cause an injury, the employee is exposed.

Environmental exposure: An employee may suffer from environmental exposure no matter how far away from the source of the hazard he or she might be. For instance, if an employee uses a loud saw all day, everyone working around the saw may be exposed to hazardous levels of noise and suffer from environmental exposure.

Potential Exposure: The possibility an employee could be exposed to a hazardous condition exists when the employee can be shown to have access to the hazard. Potential employee exposure could include one or more of the following:

• When a hazard has existed, and could recur because of work patterns, circumstances, or anticipated work requirements, and it is reasonably predictable employee exposure could occur.
• When a hazard would pose a danger to employees simply by employee presence in the area, and it is reasonably predictable an employee could come into the area during the work, to rest or to eat at the jobsite, or to enter or to exit from the assigned workplace.
• When a hazard is associated with the use of unsafe machinery or equipment or arises from the presence of hazardous materials, and it is reasonably predictable an employee could use the equipment or be exposed to the hazardous materials during work.

Knowledge Check Choose the best answer for the question.