Oxy-Acetylene Torch Safety True or False Quiz
Take the oxy-acetylene torch safety quiz and decide if acetylene gas is not explosive in our true or false challenge!
This true/false quiz helps you check what's true about acetylene gas explosiveness and safe torch work, from storage to torch head setup and shutdown. You'll get quick feedback to spot gaps before you weld; for extra practice, take the acetylene safety quiz or review the gas laws guide .
Study Outcomes
- Understand acetylene gas explosiveness -
Explain why acetylene can be explosive under certain conditions and clarify the misconception that acetylene gas is not explosive.
- Apply proper storage techniques -
Implement correct storage protocols for acetylene cylinders to minimize ignition risks and maintain compliance with safety standards.
- Identify oxy-acetylene torch components -
Distinguish between regulators, hoses, tips, and other parts to ensure proper assembly and safe operation.
- Analyze safe startup and shutdown procedures -
Sequence the steps required for lighting and extinguishing the torch to prevent accidents and ensure controlled operations.
- Evaluate true/false safety statements -
Use a quiz format to test your understanding of oxy-acetylene torch safety, including assessing the claim that acetylene gas is not explosive.
Cheat Sheet
- Acetylene's Explosive Potential -
Acetylene gas becomes unstable above 15 psi and can detonate if allowed to decompose rapidly (CGA G-1.5). Remember the combustion equation C₂H₂ + 2.5 O₂ → 2 CO₂ + H₂O to visualize its energy release. Use the mnemonic "Acetone Anchors Acetylene" to recall why cylinders store gas dissolved in acetone, reducing free”gas explosivity.
- Proper Cylinder Storage -
Per OSHA 29 CFR 1926.350, store acetylene cylinders upright, secured, and at temperatures below 125 °F (52 °C). Keep them at least 20 ft from ignition sources or separate by a fireproof barrier. Use the "STACK" trick - Separate, Temperate, Anchor, Check, Keep - for quick recall of safe storage steps.
- Identifying Torch Components -
AWS F4.1 requires both oxygen and acetylene regulators, hoses, torch handle, and mixer to be in top condition. Flashback arrestors on each line prevent reverse fire; test fittings with a soapy-water check. Label hoses red (fuel) and green (oxygen) and inspect annually per CGA guidelines.
- Safe Shutdown Sequence -
Always shut off acetylene first, then oxygen, to prevent flashback (refer to AWS procedure). After closing tank valves, bleed pressure from hoses by opening torch valves until gauges read zero. Follow the "OFF, BLEED, OFF" mnemonic: Off handles, Bleed lines, Off tank valves.
- Quiz Fact: True or False? -
"Acetylene gas is not explosive True/False?" is False when free; pure C₂H₂ is highly explosive, but in acetone solution it's stabilized (NIOSH). Challenge yourself: understand why "dissolved vs. free" changes explosiveness and ace the oxy-acetylene torch safety quiz!