In which applications would you most likely find a pressure relief valve?

Pressure relief valves are critical safety devices used in various systems to prevent overpressure conditions that could lead to equipment damage or catastrophic failure. In heating systems, these valves are commonly installed to relieve excess pressure that can build up due to thermal expansion or malfunctions, ensuring safe operation of boilers and heat exchangers.

In the context of chemical processing equipment, pressure relief valves are essential for managing pressure in reactors, distillation columns, and storage tanks. They help prevent dangerous overpressure scenarios that could occur due to exothermic reactions, vaporization of liquids, or blockages in piping systems.

In generator systems, particularly in applications involving steam or gas turbines, pressure relief valves play a vital role in protecting the system from excessive pressure that could lead to turbine failure or damage to the system components.

Considering these applications, pressure relief valves are indeed found in heating systems, chemical processing equipment, and generator systems, making the selection that encompasses all of these options the most comprehensive answer.