Boiler Test Questions

Cast iron sectional boilers are built for what type of draft firing?

mechanical force and/or induced

A boiler with water surrounding the outside of the tubes is called a __ boiler.

fire tube

Who is authorized to re-adjust the setting of a safety valve on a pressure vessel?

authorized manufacturer’s representative

Cracking of the boiler metal along the seams can be caused by:

caustic embrittlement

On a gas fired boiler, how would you test the operation of the fire eye?

by shutting off the gas supply

Where are the combustible gases located in a water boiling tube?

flowing around the tube

What is considered the most important fitting on a boiler?

the safety valve

When performing a hydrostatic test, the pressure on the boiler should not exceed:

10 psi above 1.5 times MAWP

According to the ASME code, what is the least number of safety valves allowed on a pressure vessel in NJ?

one

If the fire-eye or flame scanner shuts off because the main flame fails, what device does it secure?

fuel solenoid valve

the air to gas ratio is miantained by:

all of the answers

A draft fan located between the boiler and chimney is what type of draft?

induced

Boiler water having high alkalinity will develop:

caustic embrittlement

The most accurate means of deciding the frequency of blowdown of a boiler is determined by a:

boiler water analysis

What device is used to obtain sufficient static head for the returning condensate in a two pipe gravity return system

return trap