Why store cylinders away from heat sources?

• A. To improve aesthetics
• B. To make access easier
• C. To prevent overpressure and cylinder rupture due to heat
• D. To comply with noise regulations

Answer: (C)

Heat causes the gas inside a cylinder to expand, raising the internal pressure. Cylinders are designed for a specific maximum pressure, and if they are kept near heat sources the pressure can climb high enough to weaken the cylinder wall or cause it to vent or rupture. Keeping cylinders away from heat prevents overpressure and reduces the risk of a dangerous release, which is especially important with flammable refrigerants where a release could ignite. The other reasons—appearance, easier access, or noise rules—don’t address the safety risk of overpressure or ignition.