Why is Oxygen Arc Cutting (OAC) more dangerous than Oxyfuel Gas Cutting (OFC)?

• A. OFC produces more fumes
• B. OAC is more expensive
• C. OAC creates more sparks
• D. OFC uses more oxygen

Answer: (C)

The main safety factor here is the amount of sparks generated. In Oxygen Arc Cutting, the electric arc melts metal so intensely that many molten droplets are torn off and expelled as sparks. The jet of oxygen that follows not only aids the cutting but also helps these sparks stay hot and burn—and it can carry them farther, increasing the chance they ignite nearby flammables or cause burns to anyone nearby. In contrast, oxyfuel gas cutting relies on a flame to heat and oxidize the metal, which produces fewer molten droplets and less spatter, so there are fewer sparks to manage. So the heightened fire risk and burn hazard in OAC come from the greater spark production, making it more dangerous in that aspect.