Cutting, Brazing, and Soldering
Cutting Hazards and Precautions
Another part of the welder's job involves cutting operations such as oxyacetylene cutting and plasma arc cutting.
Safe Welding and Cutting
Observe these safety precautions when performing any cutting operation:
- Never place hands or fingers between the metal plate and the bed.
- Never place hands under the hold-downs or knife.
- Ensure employees are clear from the piece being cut.
- Support the plate to avoid injuries if the cut end of the metal falls away.
- When using oxyacetylene cutting equipment, ensure that the work area is gas-free. This is particularly important when working in spaces where dangerous vapors may collect.
- Always post a fire watch to protect the surrounding areas and personnel. The high-pressure oxygen stream used in cutting with an oxyacetylene torch can throw molten metal for a distance of 50 to 60 feet.
- When using oxyacetylene cutting equipment, remove and tag out any interfering systems.
- Install covers, insulators, and handles before attempting to operate the plasma arc cutting equipment.
- When using plasma arc cutting equipment, open primary disconnect switches before charging any electrical connections.
Knowledge Check Choose the best answer for the question.
5-1. The high-pressure oxygen stream used in cutting with an oxyacetylene torch can throw molten metal for a distance of _____.
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