745 Welding, Cutting, and Brazing Safety

General Requirements for Welding and Cutting

Airline Respirators for Unsafe Conditions: When ventilation is not enough to keep the air safe, welders must use respirators with a continuous supply of fresh air. These respirators must be approved for use in hazardous conditions.

Respirators for Life-Threatening Environments: If welding is taking place in an area that could be immediately dangerous to life, workers must use a full-face, pressure-demand breathing system with an emergency air supply. This equipment ensures that workers do not run out of safe air to breathe.

Outside Helper for Confined Spaces: When welding inside a confined space, a trained safety worker must remain outside to monitor conditions and provide emergency assistance. This person ensures the safety of workers inside by staying in constant communication and being ready to help if needed.

Do Not Use Oxygen for Ventilation: Oxygen should never be used as a substitute for proper ventilation because it increases the risk of fire and explosions. Welding areas must use mechanical ventilation or proper airflow systems to maintain safe working conditions.

If welding takes place inside an enclosed space with screens, the screens must not block airflow, and they should be raised about two feet off the ground to allow air circulation.

Limiting Exposure to Harmful Fumes: Air systems must keep toxic fumes and gases below safe limits set by OSHA. Employers must follow hazard communication rules, meaning they must provide safety labels and training about dangerous materials used in welding, such as coatings, fluxes, and filler metals.

Hazard Communication Requirements: Suppliers must label hazardous materials according to safety rules and inform workers about dangers like toxic fumes. Labels on materials that contain hazardous substances such as cadmium and fluorine must include warnings about their health risks.

First-Aid Readiness: First-aid equipment must always be available at welding sites. Any injuries must be reported immediately, and first aid should be given until medical help arrives.

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