Welding Safety on Construction Sites
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Welding Safety on Construction Sites
Welding on construction sites presents risks from electric shock, arc eye, toxic fumes, fire, and burns. Whether using MIG, TIG, MMA, or oxy-fuel processes, welders and those working nearby must understand the hazards and follow the correct precautions. Welding fumes are classified as carcinogenic and prolonged exposure causes serious lung disease. Adequate ventilation, correct PPE, and a valid hot works permit are essential for every welding task.
- Obtain a hot works permit before starting any welding activity on the construction site.
- Use local exhaust ventilation or forced ventilation to capture and remove welding fumes at source.
- Wear a correctly rated welding helmet with the appropriate lens shade for the welding process.
- Use flame-retardant clothing, welding gauntlets, and leather apron to protect against burns and sparks.
- Erect welding screens around the work area to protect nearby workers from arc flash radiation.
- Inspect welding equipment, cables, and connections before each use and reject any with damage.
- Ensure the work area is dry and use insulating mats when welding in damp or confined conditions.
- Clear all combustible materials from within 10 metres and maintain a fire watch during and after welding.
- Ensure fire extinguishers are positioned within immediate reach of the welding work location.
If a welder receives an electric shock, isolate the power supply before touching them. Call 999 and begin CPR if they are unresponsive. For arc eye, flush eyes with clean water and seek medical attention.
- Welding fumes are classified as carcinogenic — always use extraction or adequate ventilation.
- Arc eye is caused by even brief unprotected exposure to the welding arc ultraviolet light.
- A hot works permit is mandatory for all welding activities on UK construction sites.
- Inspect all welding equipment daily and never use damaged cables or faulty return clamps.
- Fire from welding sparks can smoulder for hours before igniting — maintain the full fire watch.
- Protect nearby workers with welding screens and warning signs around the active work area.
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