OSHA 30 Hour Construction Program Practice Test

What does Class I asbestos refer to?

1. Most hazardous class related to insulation removal

2. Asbestos in roofing materials

3. Asbestos used in flooring products

4. Asbestos in student custodial jobs

The correct answer is: Most hazardous class related to insulation removal

Class I asbestos refers specifically to the most hazardous type associated with insulation materials. This classification encompasses asbestos that is found in thermal systems insulation and surfacing materials, particularly in building settings where these materials are prevalent. Insulation removal poses significant health risks due to the potential release of airborne fibers, which can be inhaled and lead to serious health conditions such as asbestosis or mesothelioma. In contrast, while asbestos can also be found in roofing materials, flooring products, and even in certain custodial settings, these do not carry the same level of risk as the materials classified under Class I. The focus of Class I is on materials that require stringent safety protocols during removal or handling due to their hazardous nature and the likelihood of fiber release into the air.