What is the primary purpose of a safety valve?

The primary purpose of a safety valve is to prevent overpressure of the boiler. Safety valves are critical components in pressure systems, especially in boilers, where they serve to protect the integrity of the system. When pressure within the boiler exceeds the maximum allowable limit, the safety valve opens automatically, releasing excess steam or pressure. This action helps to prevent potential catastrophic failures such as explosions or damage to the boiler and associated equipment.

The role of a safety valve is purely a protective one, ensuring that the pressure remains within safe operational limits, thereby safeguarding personnel, equipment, and the surrounding environment. This is why it is vital for operators to have a clear understanding of the operation and maintenance of safety valves as part of their training for high-pressure operations. Other options, like regulating steam flow or measuring temperature, involve different functions and equipment that do not serve as the primary safety mechanism against overpressure scenarios.