How many classes of asbestos work does OSHA recognize?

OSHA recognizes four classes of asbestos work to provide clear guidelines for the safe handling and abatement of asbestos-containing materials. This classification system helps ensure that workers are properly trained and equipped to handle the varying levels of risk associated with different types of asbestos-related jobs.

The four classes are defined as follows:

1. Class I involves activities that involve the removal of asbestos-containing materials (ACM) that are in a way that produces high risk, such as the removal of thermal insulation or a surfacing material.

2. Class II pertains to the removal of ACM that is not classified as Class I, which often includes materials like wallboard or ceiling tiles.

3. Class III covers asbestos work where ACM is disturbed, typically during maintenance and repair activities.

4. Class IV includes clean-up activities that deal with asbestos but do not involve the removal of ACM.

This systematic approach to categorizing asbestos work facilitates appropriate training and safety measures, ultimately helping to protect workers from the health hazards associated with asbestos exposure.