Boiler Components: 15 flashcards
All 15 flashcards from this kit, free and with no sign-up.
1. What is the primary function of a **safety valve** on a boiler?
Show the answer
To automatically release excess steam pressure, preventing catastrophic boiler failure.
2. Identify the purpose of a **water level indicator** (or gauge glass).
Show the answer
To visually display the water level inside the boiler drum, ensuring it remains within safe operating limits.
3. What is the role of a **pressure gauge** on a boiler?
Show the answer
To continuously monitor and display the internal steam pressure of the boiler.
4. Explain the function of a **blow-off valve**.
Show the answer
Used to periodically drain a portion of the boiler water to remove accumulated sludge, sediment, and dissolved solids, preventing scale buildup.
5. What is the purpose of a **feedwater regulator**?
Show the answer
To automatically control the rate at which feedwater is supplied to the boiler, maintaining a constant water level.
6. Describe the function of a **steam stop valve** (or main stop valve).
Show the answer
A manually operated valve that controls the flow of steam from the boiler to the steam main, used for starting up and shutting down.
7. What is the purpose of a **low water cutoff** device?
Show the answer
To automatically shut down the boiler's firing mechanism if the water level drops below a safe minimum, preventing damage.
8. Identify the function of a **fusible plug**.
Show the answer
A safety device containing a metal core that melts at a specific high temperature, releasing steam and signaling a low water condition to shut down the burner.
9. What is the purpose of a **manhole** on a boiler?
Show the answer
To provide access for inspection, cleaning, and maintenance of the boiler's internal components.
10. Explain the function of a **fire door** or **furnace door**.
Show the answer
Provides access to the furnace for lighting the fire, inspection, and cleaning of the combustion chamber.
11. What is the role of a **chimney** or **stack**?
Show the answer
To vent combustion gases safely away from the boiler and surrounding area, and to provide draft for combustion.
12. Describe the purpose of **soot blowers**.
Show the answer
Devices used to remove soot and ash deposits from the heating surfaces of the boiler, improving heat transfer efficiency.
13. What is the function of a **drain valve**?
Show the answer
Used to completely empty the boiler for maintenance, repair, or during periods of non-operation.
14. Why is regular testing of the **safety valve** important?
Show the answer
To ensure it will function correctly and relieve pressure at the set point when needed, guaranteeing safety.
15. How does a **feedwater regulator** contribute to boiler efficiency?
Show the answer
By maintaining a stable water level, it prevents fluctuations in steam output and ensures optimal heat transfer.
Your notes can be a kit like these
Every kit here was made from real study material. Point Veda at a chapter, a PDF, a photo or a link and get notes, flashcards, practice MCQs, games and a scored test — free, in 42 languages.
- Chapter notes
- Flashcards
- Practice MCQs
- Scored tests
- Exam prep
Get Veda free See what students get
Free to start · No ads · Works in 42 languages