Welding

Welding is an important part of many manufacturing projects. However, fusing metal together at high temperatures puts welders at risk of exposure to ultraviolet (UV) radiation and inhaling hazardous gases and toxic metal fumes. Welding is a job with an increased risk of exposure to UV radiation outdoors and indoors.

Overexposure to these gases and fumes can cause serious illnesses. For example, long-term exposure to manganese can cause an irreversible illness that is similar to Parkinson’s disease called manganism.

Carbon monoxide is also a concern as it is the most common cause of gas poisoning, leading to death in the workplace. Low levels can cause headaches, dizziness and nausea, while high exposures can kill. All gasoline-powered vehicles and equipment emit carbon monoxide, including welding equipment.

One must ensure the use of equipment outside or in properly ventilated areas and measure carbon monoxide emissions to ensure that levels don’t become dangerous.

Protecting welders from manganese exposure

In the hierarchy of controls, engineering controls must first be used to reduce exposure to fumes. That can mean providing separate heating and ventilation systems to protect workers from toxic gases and fumes while improving the ambient air in the area. This could also include local extraction equipment, rotational fixtures, custom weld guns and pulse welding.

Second, the priority is to protect welders from direct exposure to fumes, usually through supplied air respirators and powered air-purifying respirators.

Ultimately, employers have a responsibility to implement control measures for airborne hazardous substances to eliminate any risk to workers’ safety or health.

Other hazards

Workers are also exposed to arc flash, along with the potential for burns, electrical shock, cuts and injuries to toes and fingers. Many of these hazards can also be controlled through engineering controls, work practices and personal protective equipment (PPE).

Legislation Part 17 – Welding and Allied Processes of the Workplace Safety and Health Regulation applies to any workplace where welding or allied processes take place.

Manitoba’s Workplace Safety and Health Act and associated regulations are in place to protect the safety and health of workers in Manitoba. Below is a link to the information associated with this safety topic.

Part 17 Welding and Allied Processes Manitoba Workplace Safety and Health Act and Regulation