Podcast
Questions and Answers
What is the minimum number of safety valves required to be fitted to the boiler for them to be considered efficient?
What is the minimum number of safety valves required to be fitted to the boiler for them to be considered efficient?
- 3 safety valves
- 1 safety valve
- 2 safety valves (correct)
- 4 safety valves
Why is it essential for the springs and valves of safety valves to be within a lockable casing?
Why is it essential for the springs and valves of safety valves to be within a lockable casing?
- To protect the safety valves from impurities
- To prevent excess pressure build-up (correct)
- To allow for easy maintenance
- To ensure full steam flow
What material is commonly used for the fabrication of the valve, valve seat, valve stem, and lock nut of safety valves?
What material is commonly used for the fabrication of the valve, valve seat, valve stem, and lock nut of safety valves?
- Titanium
- Bronze (correct)
- Aluminum
- Copper
Why is it important for the valve lift to be equivalent to ¼ of the diameter of the valve in safety valves?
Why is it important for the valve lift to be equivalent to ¼ of the diameter of the valve in safety valves?
Where is the safety valve independently mounted?
Where is the safety valve independently mounted?
Why must no other valves be fitted between the boiler shell and the safety valve?
Why must no other valves be fitted between the boiler shell and the safety valve?
How does the setting of the safety valve on the superheater compare to the other 2 safety valves?
How does the setting of the safety valve on the superheater compare to the other 2 safety valves?
What triggers a safety valve to lift off its seat and allow steam to escape?
What triggers a safety valve to lift off its seat and allow steam to escape?
How are main steam stop valves typically designed in single boiler installations?
How are main steam stop valves typically designed in single boiler installations?
What is the purpose of having a screw down, non-return type main steam stop valve in multiple boilers connected?
What is the purpose of having a screw down, non-return type main steam stop valve in multiple boilers connected?
How are valve seats maintained in position for cast steel, self-closing main steam stop valves in water tube boilers?
How are valve seats maintained in position for cast steel, self-closing main steam stop valves in water tube boilers?
What additional safety feature may be incorporated in some main steam stop valves to protect a steam turbine?
What additional safety feature may be incorporated in some main steam stop valves to protect a steam turbine?
Flashcards are hidden until you start studying
