Which class of asbestos work involves removal of TSI and surfacing ACM?

The class of asbestos work that involves the removal of Thermal System Insulation (TSI) and surfacing Asbestos-Containing Material (ACM) is classified as Class I. This classification is reserved for the most hazardous asbestos removal operations, which include activities that disturb high-risk materials such as TSI and surfacing ACM.

Understanding the reasoning behind Class I designation is important. Class I work requires specialized training and stringent safety protocols because it involves disturbing materials that are likely to release high levels of asbestos fibers into the air. This is crucial for ensuring the safety of workers and occupants in buildings where such materials are present.

In contrast, other classes of asbestos work involve different levels of risk and types of activities. For example, Class II generally pertains to the removal of non-friable ACM, which is less likely to release asbestos fibers when disturbed. Class III focuses on repair and maintenance operations that may disturb ACM, while Class IV deals with activities that monitor and mitigate asbestos hazards without direct removal. Each classification serves a specific purpose based on the risk associated with the materials being handled.