What happens to propane in a wildfire?

Just like propane tanks won’t explode due to an impact, they’re also built with safety features to withstand short-term wildfires. Propane tanks allow plenty of room for the liquid propane inside to expand in the heat, and a grass fire won’t provide enough sustained heat to cause pressure concerns. However, in the event of prolonged heat exposure, propane tanks are also built with pressure-relief valves that will automatically activate to let out propane vapor if pressure builds up to a critical stage.