Final answer:
Welders must take personal precautions when welding in the overhead position, including wearing protective clothing and following general safety guidelines.
Step-by-step explanation:
When welding in the overhead position, it is important for welders to take certain personal precautions to ensure their safety. These precautions include wearing protective clothing such as gloves and a helmet to protect from the electric arc, which can emit high-energy electromagnetic radiation, spray sparks, and burn the retina of an unprotected eye. The thermal energy produced during the welding process can also be felt on exposed skin, so it is important to cover any exposed areas.
In addition to wearing protective gear, welders should also follow general safety guidelines such as working in a well-ventilated space, ensuring there are no flammable substances nearby, and maintaining proper personal hygiene. This helps to minimize the risk of accidents and exposure to harmful substances.