How to Weld in Confined Spaces

Welding in confined spaces requires more safety precautions than the average welding job. A confined space not only means limited space, it may also include a compromised entry and exit or improper ventilation due to the lack of fresh air exchange. Consider all of the safety hazards, including the buildup of dangerous fumes and particles.

Difficulty: Moderately Challenging

Instructions

1. Check out the area where you'll be welding for adequate ventilation. You should look for an air duct, ventilation fan or some other source of air exchange. Certain types of welding create more fumes and smoke, which can interfere with visibility. If there isn't enough ventilation, you should wear a self-contained breathing apparatus or a mask specifically designed to filter toxic fumes.

2. Inspect all of your welding equipment before you begin, including lead wires, connectors, insulators and clamps. It's important to eliminate all potential fire or electrical shock hazards. Proper maintenance of your equipment is a vital safety element.

3. Wear the proper protective gear for the job you're performing including a welding helmet, fire retardant clothing, leather gloves, rubber soled shoes and a respirator if indicated.

Tips & Warnings

• Some hazards involved with welding in confined spaces include fire, explosion, electrical shock or asphyxiation. Use caution and follow all suggested safety precautions in your safety manual, before you begin welding in a confined space.
• Inert gases are usually heavier than air, and may displace the oxygen. Since these gases may be odorless and tasteless, you can get into trouble before you realize there's a problem. Keep your source of air open, which may require that you prop it open or secure it in some other way.
• Provide a way to cut the power source of your welder that's outside of the confined area, and always work with a partner who can provide assistance.
• Keep as much of your equipment as possible outside of the space, without blocking the exit.