If you see a white vapor and hear a hissing sound coming from a filled propane container, what should you do?

In a situation where you observe a white vapor and hear a hissing sound from a filled propane container, the best course of action is to inform a supervisor and wait for further instructions. This response prioritizes personal safety and the safety of those around you. The presence of white vapor coupled with a hissing sound typically indicates a leak, which can create a highly dangerous environment due to the flammability of propane.

Removing the cylinder immediately, while it might seem like a proactive approach, can actually place you in grave danger. The situation warrants professional handling since propane leaks can lead to explosions or fires if ignited. Without the proper training and equipment to manage hazardous materials like propane, it's crucial to leave the situation to those who are equipped to handle it effectively, such as a trained emergency response team.

Informing a supervisor ensures that the incident is documented and that safety protocols are followed, allowing for appropriate measures to be taken to mitigate the risk associated with a potential propane leak. This response is essential for maintaining a safe working environment.