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Cutting Guidelines

Gas welding and cutting tools are often powered by oxygen or acetylene gas cylinders. These tanks require special safety precautions to prevent explosions and serious injuries. Follow the safety guidelines below, and refer to the Laboratory Safety chapter in this manual for more information on gas cylinder safety:

  • Ensure that acetylene/oxygen systems are equipped with flame or flashback arrestors.
  • Store acetylene bottles upright and secured. Oxygen cylinders must be shored 20 feet from flammable gases or separated by a fire foot wall.
  • Keep cylinder fittings and hoses free from oil and grease.
  • Repair or replace defective hoses by splicing. Do not use tape.
  • Do not tamper or attempt to repair cylinders, valves, or regulators.
  • Do not interchange regulators or pressure gauges with other gas cylinders.
  • Carefully purge hoses and torches before connecting a cylinder.
  • Set acetylene pressure at or below 15 psig. Always use the minimum acceptable flow rate.
  • Never use a match to light a torch. Use an approved lighter.





May 2011
Reviewed November 2014