How may fittings be attached to a high pressure boiler?
a. threaded
b. certified welds
c. flanges
d. any of the above - ANSWER d. any of the above
Which test determines the relieving capacity of safety valves?
a. hydrostatic test
b. accumulation test
c. orsat test
ration test - ANSWER b....
How may fittings be attached to a high pressure boiler?
a. threaded
b. certified welds
c. flanges
d. any of the above - ANSWER d. any of the above
Which test determines the relieving capacity of safety valves?
a. hydrostatic test
b. accumulation test
c. orsat test
d.evaporation test - ANSWER b. accumulation test
Flue gasses can leave at high temperatures. We can recover some of this heat using a(n):
a. flash tank
b. open feedwater heater
c. economizer
d. air compressor - ANSWER c. economizer
Feed water is typically heated with:
a. commercial hot water heaters
b.waste or extracted steam
c. another burner
d. superheaters - ANSWER b.waste or extracted steam
What is the maximum pounds of steam per hour of a boiler called?
, a. boiler capacity
b. steaming rate
c. heating surface
d. water tube - ANSWER a. boiler capacity
What is a steam condenser's reservoir called?
a. surge tank
b. hot well
c. flash tank
d. vacuum - ANSWER b. hot well
When inspecting a boiler, main steam valves are:
a. open
b. closed
c. depends on the boiler
d. closed, locked, and tagged - ANSWER d. closed, locked, and tagged
Boiler draft is the difference in _____ between two points:
a. gas flow
b. water flow
c. pressure
d. wind - ANSWER c. pressure
Boilers are required to have how many pressure gauges?
a. 1
b. 2
c. 3
d. 1 for low pressure and 2 for high pressure - ANSWER a. 1
, Feed water pumps take water from the:
a. hotwell
b. open feedwater heater
c. flash tank
d. boiler - ANSWER b. open feedwater heater
High vibrations in a feed water pump could be caused by:
a. high pressure in the DA tank
b. cold feed water
c. hot feed water
d. those things always vibrate - ANSWER c. hot feed water
Which type of pump is best for handling dirty water?
a. chemical
b. centrifugal
c. gear
d. positive displacement - ANSWER b. centrifugal
Most codes restrict the temperature of water entering the sewer to a max of:
a. 115F
b. 140F
c. 165F
d. 212F - ANSWER b. 140F
Why do compressors have unloaders?
a. decrease efficiency
b. increase motor starting load
c. capacity control
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