Lesson 5 - Steam Technology SAQ
This lesson allows you to test yourself on the material covered in the Steam Technology lesson and determine the level to which you have met the learning outcomes.
Self-Assessment Questions
1. * Explain the difference between:
a) Shell (fire-tube) and water tube boilers
b) Pressurised and vented condensate recovery
c) Direct acting and pilot operated control valves
d) Process steam traps and drainage steam traps
2. **
a) Draw a typical arrangement for a pressure reducing station; include the components that you would expect to find in it.
b) Why is the steam trap placed before the reducing station?
c) Why do you have a pressure relief valve if you are controlling the pressure anyway?
3. ** Your brewery is experiencing water hammer on the steam lines. You have been asked to check the design and operation, and then make recommendations to eliminate the problem. What are the key things you should look for?
4. ** What controls are required to ensure the safe operation of a boiler?
5. */**
a) How do mechanical and thermostatic steam traps differ in their operation?
b) Give an example of a mechanical and thermostatic steam trap.
c) Where would you expect to find these steam traps within a brewery?
d) In which ways could a steam trap fail, and what would the consequences be?