Safety valve function in boilers: select the correct purpose. Context: Overpressure protection is mandatory to prevent boiler explosions and protect equipment and personnel. Choose the correct function of a safety valve.
Mechanical Engineering
Steam Boilers and Engines
Difficulty: Easy
Choose an option
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ATo blow off steam when internal pressure exceeds the working pressure
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BTo indicate the water level inside the boiler
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CTo measure steam pressure inside the boiler
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DNone of the above
Answer
Correct Answer: To blow off steam when internal pressure exceeds the working pressure
Explanation
ConceptThe safety valve is a pressure-relief device that automatically releases steam if the boiler pressure exceeds the set working (or design) limit, preventing catastrophic overpressure.
Not to be confused with
- Water level indication (gauge glass or water level indicator).
- Pressure measurement (Bourdon pressure gauge).