Why is it important to avoid using oil or grease on regulators or fittings in oxyfuel cutting?

Using oil or grease on regulators or fittings in oxyfuel cutting is crucial to avoid because these substances can ignite and cause an explosion when they come into contact with oxygen. In an oxyfuel cutting operation, pure oxygen is used to support combustion, and the presence of oil or grease can dramatically increase the risk of fire. Oxygen can accelerate the burning of materials that are typically considered non-flammable in air conditions, turning even a small amount of oil into a dangerous potential ignition source. This means that any leaks or spills involving oils and greases in an oxygen-rich environment can lead to catastrophic events, such as flashback or explosion, putting operators and equipment in severe danger.

Keeping fittings and regulators free from oil and grease is a critical safety measure in creating a safe working environment where oxyfuel cutting is performed.