Chlorine gas cylinders have a device that melts at specific temperatures to prevent pressure buildup. What is this device called?

The device that melts at specific temperatures to prevent pressure buildup in chlorine gas cylinders is known as a fusible plug. This safety feature is designed to protect the cylinder from the potential danger of overpressure due to extreme heat. When the temperature rises beyond a certain threshold, the fusible material in the plug melts, allowing gas to escape and thereby relieving pressure. This helps to prevent catastrophic failures or explosions that could occur if the cylinder were to become overheated.

Understanding the function of a fusible plug is crucial in the context of handling hazardous materials such as chlorine. It enhances safety protocols by providing a passive means of pressure relief without the need for manual intervention. Proper knowledge of these devices is essential for water operators who may be responsible for managing chlorine and other chemicals used in water treatment processes.