Why Dust Monitoring is a Health and Safety Essential

Respirable particles, generally smaller than 4 micrometres in diameter, include contaminants such as dust, soil, sand, pollens, engine exhaust and tobacco smoke. Although these particles are not always visible to the human eye, they can pose a considerable and hidden health threat to workers in industries such as mining, construction and any confined or high-risk workplace. The practice of dust monitoring, however, allows any dust hazard to be identified and dealt with before adverse health effects manifest.

The body has many natural safeguards against the inhalation of harmful contaminants in the air. These begin with the mucus in the nose that catches larger particles and later expels them through sneezing. Smaller particles are then filtered through the mucus and cilia (tiny hairs) in the bronchi and bronchioles that lead to the lungs. Finer dust that reaches the air sacs is attacked by macrophage cells that clean the air cells by consuming fine particles. With such an extensive lung defence system, you might think that dust monitoring is unnecessary, but many industrial workplaces contain dust that is too fine to be caught by mucus and in amounts too great for the macrophage cells to be effective. Dust monitoring is therefore essential to detect harmful dust when our bodies cannot.

Dust monitoring is an essential health and safety essential as the inhalation of dust can cause various health problems, from allergic reactions and respiratory illness to potentially fatal diseases such as lung cancer, caused by the presence of recognised carcinogens such as asbestos or silica in the air. Prolonged exposure to dusty environments can cause varying types of lung disease (pneumoconiosis), particularly those that result in fibrous or scar tissue forming on the lungs which cause the lungs to lose the elasticity that is essential for healthy breathing. Fibrosis of the lungs typically forms from exposure to coal and metal dusts, such as beryllium, tungsten carbide, iron and barium, as well as some organic dusts, such as mouldy hay, grain or sugar cane, as well as bird droppings and feathers. Dust monitoring will detect the presence of these harmful dusts to reduce the risk of pneumoconiosis.

Besides the health risks to the lungs, inhaled dust can also enter the bloodstream, where it will be carried around the body to potentially cause toxic poisoning in other organs such as the brain and kidneys. These deteriorating conditions can be prevented with a well-implemented dust monitoring system, such as the use of continuous particle monitors that measure the concentration of dust in the air to regularly assess any health risks.