Which device is used to prevent over pressurization of the illustrated distiller? Illustration MO-0111

Correct Answer: Option D — "26"

Component 26 represents the safety relief valve for the distiller shell. Per 46 CFR requirements for pressure vessels, safety valves must be installed to prevent over-pressurization. This device automatically vents excess vapor or steam to the atmosphere or a safe location if internal pressure exceeds the design limit.