Always use proper supports. Ensure that you are comfortable. Always wear suitable eye protection which protect the eyes from radiation. For added protection from foreign objects and radiation, goggles or safety glasses with side shields should be worn even when other eye or face protection is worn. DON'T weld near cleaning tanks containing chlorinated solvents - the heat breaks down the vapours into very toxic gases.
Laser cutting requires protection from accidental eye contact with the beam or beam reflections.
Properly mount cylinders. Use correct cylinder regulators. Ensure adequate lighting. Ensure proper earthing of arc - welding equipment. Avoid radiation exposure from weld check equipment.