Asbestos Containing Materials (ACM) refers to any materials or articles that, as part of their design, contain asbestos. Asbestos is a group of naturally occurring minerals that are resistant to heat, electrical, and chemical damage, sound absorption, and have high tensile strength. These properties made asbestos an attractive material for use in the construction industry, particularly during the mid-20th century.
The Core Components of ACM
ACM is composed of two primary components:
- Asbestos: This is a group of six naturally occurring silicate minerals made up of thin, needle-like fibres. The six types are chrysotile, amosite, crocidolite, tremolite, anthophyllite, and actinolite. Among these, chrysotile, also known as white asbestos, is the most commonly used.
- Material or Article: This refers to the product that contains asbestos. In the construction industry, this could include cement sheets, tiles, insulation boards, pipe insulation, and other building materials.
The Use of ACM in the Construction Industry
The use of ACM in the construction industry was widespread due to its desirable properties. It was used in a variety of applications including:
- Insulation: Asbestos was commonly used for thermal insulation in buildings and industrial settings due to its excellent heat resistance.
- Fireproofing: Asbestos materials were used in walls, ceilings, and floors for their fire-resistant properties.
- Roofing and Siding: Asbestos cement sheets and tiles were used in roofing and siding due to their durability and resistance to fire and weather conditions.
- Piping and Electrical Insulation: Asbestos was used to insulate pipes and electrical wires because of its resistance to heat and electricity.
The Risks Associated with ACM
While ACM has many beneficial properties, it poses significant health risks when disturbed. Asbestos fibres are microscopic and can become airborne when ACM is damaged or disturbed. When inhaled, these fibres can become lodged in the lungs, leading to diseases such as asbestosis, lung cancer, and mesothelioma.
The Role of H&S Managers in Managing ACM
Health and Safety (H&S) Managers play a crucial role in managing ACM in the workplace. They are responsible for identifying ACM, ensuring its safe handling and disposal, and protecting workers from exposure. This involves conducting risk assessments, implementing safety procedures, providing training to workers, and complying with health and safety regulations.
The Importance of ACM Management in the Construction Industry
Effective management of ACM is particularly important in the construction industry due to the widespread use of asbestos in older buildings. Construction workers are at a high risk of asbestos exposure during renovation, demolition, and maintenance activities. Therefore, H&S Managers in the construction industry must be knowledgeable about ACM and take proactive measures to protect workers.
Examples of ACM Management in the Construction Industry
- Renovation Projects: During renovation projects, H&S Managers must identify any ACM present and ensure it is safely removed before work begins.
- Demolition Projects: Before a building is demolished, a thorough asbestos survey must be conducted. If ACM is found, it must be safely removed by licensed professionals.
- Maintenance Activities: Maintenance workers often encounter ACM. H&S Managers must ensure these workers are trained in asbestos awareness and have the necessary protective equipment.
