Fusible plugs on chlorine cylinders are designed to melt at:

Fusible plugs on chlorine cylinders are safety devices designed to prevent the release of chlorine gas under certain conditions, particularly high temperatures. These plugs are intended to melt at a specific temperature to ensure that if the pressure within the cylinder increases due to heat, the plug will fail and allow gas to escape slowly, reducing the risk of an explosion.

The correct temperature at which these fusible plugs typically melt is 158 degrees Fahrenheit. This temperature is selected to provide a balance between the safety of the cylinder and the operational conditions for chlorine storage and handling. If the temperature exceeds this level, it signifies a potential hazard that necessitates the safe release of gas to prevent catastrophic failure of the cylinder.

The other temperature options, such as 80, 100, and 135 degrees Fahrenheit, do not align with the standard melting point for fusible plugs used in chlorine cylinders, which is specifically set at 158 degrees Fahrenheit to ensure optimal safety and to protect both the equipment and personnel handling the cylinders.