Which class of asbestos work involves repair and maintenance operations likely to disturb ACM?

The class of asbestos work that involves repair and maintenance operations likely to disturb asbestos-containing materials (ACM) is Class III. This classification specifically addresses activities that include the repair and disturbance of installed materials that may contain asbestos. Workers involved in Class III asbestos operations are engaged in activities that directly impact ACM, thereby potentially releasing asbestos fibers into the air. This requires specific training and adherence to safety protocols to ensure proper handling and control of asbestos exposure.

Class III work can include tasks such as drilling, cutting, or other maintenance activities that may disrupt the integrity of asbestos materials. The importance of this classification lies in the heightened risk of asbestos exposure during these operations, which necessitates careful monitoring and safety measures to protect both workers and the environment.

In contrast, other classes of asbestos work address different types of activities, such as Class I, which involves removal of ACM, Class II, which is related to the removal of specific types of ACM, and Class IV, which pertains to maintenance and custodial activities where ACM may be present but is not likely to be disturbed significantly. Understanding these classifications is crucial for ensuring safety and compliance in environments where asbestos is a concern.