There are more than 80 different types of welding and associated processes. That means there is a lot for any
welder, from a trainee to an expert to take in. Unfortunately, during any of these 80-plus activities, welders can also take in toxic fumes if unprotected.
With welding fume classified as ‘Carcinogenic to humans’ by the IARC (International Agency for Research on Cancer), the welding industry continues to undergo significant safety changes. At the core of any change is the knowledge that all welding processes are subject to risk assessment, and in the case of welding fume, the hierarchy of controls must be applied.
In reference to PPE, every employer should consider the use of auto-darkening welding helmets that have integrated Powered Air Purifying Respirators (PAPR). Welding helmets with PAPR are mandatory in many Australian businesses. Statistically they tell a story that cannot be overlooked: They have a Required Minimum Protection Factor (RMPF) of 50, which means they supply breathing air which is at least 50 times cleaner than the air the welder would be breathing if unprotected. By comparison, disposable half-face style respirators have a RMPF of 10 if properly fitted and worn.
Powered Air Purifying Respirators are versatile. They allow the welder unrestricted movement, offer clear vision, comfort, eye and face protection, and of course, respiratory protection. They are valuable in a variety of environments where welders may work with such materials as aluminium, stainless steel, galvanised steel and applications including MMA, GMAW, FCAW, SAW and TIG.
“In relation to the hierarchy of controls, PPE is often referred to as the last resort. When it comes to welding, suitable PPE must always be worn. Even if a welder is operating within the workplace exposure standard for welding fume, they can still inhale up to 11 grams of fume every year. 11 grams of a substance with a direct link between human exposure and the development of cancer,” says David Chippendale, Director of Marketing and Sales AWS. “Exposure limits are just the beginning and workplaces should look to roll out a combination of controls to give welders the best possible protection. Using a PAPR in the work area whenever there is a risk of significant welding fume exposure can provide highly effective protection.”
