OHIO BOILER TEST WITH ALL CORRECT & 100%
VERIFIED ANSWERS|LATEST VERSION|UPDATED TO
PASS
The pressure at the base of a vertical foot of water is Correct answer-0.433 psi.
When performing a hydrostatic test, the pressure on the boiler should be increased to Correct
answer-1 ½ times the safety valve setting .
A boiler steam pressure gauge should have a range of Correct answer-1 ½ to 2 times the safety
valve setting:
The maximum size of the bottom blowdown line and the surface blowdown line is Correct answer-
2 1/2"
During startup, the boiler vent should remain open until a pressure of Correct answer-
approximately 3 psiis on the boiler
No. 6 fuel oil Correct answer-must be heated to reach the required temperature for combustion.
No. 6 fuel oil Correct answer-must be heated in order to be pumped.
Fuel oil heaters must be used when burning Correct answer-No. 6 fuel oil
Water weighs approximately Correct answer-8.3lb/gal.
In order to burn 1 lb. of fuel, Correct answer-approximately 15 lb. of air is needed.
A low pressure steam boiler has a maximum allowable working pressure (MAWP) of up to Correct
answer-15
A boiler generating 20,000 lb of steam/hr must be supplied with at least Correct answer-20,000 lb
of water/hr.
Needed for the combustion of fuel is made up of approximately Correct answer-21% oxygen and
79 % nitrogen
The automatic non return valve on a boiler being cut in on a line should be opened when the steam
pressure on the boiler reaches Correct answer-75% to 85% of the line pressure
. A sudden drop in boiler steam pressure without a corresponding drop in boiler water temperature
could result Correct answer-in a boiler explosion.
Super heater tubes are protected from warping or burning out by Correct answer-a continuous
flow of steam .
Because of the large volume of water, the boiler most likely to cause a boiler explosion Correct
answer-a fire tube boiler.
, Stays and braces are needed to prevent bulging in Correct answer-a fire tube boiler (high or low
pressure).
After a boiler has had major repair work made on its steam or water side or has developed a low
water condition, it should be subjected to Correct answer-a hydrostatic test
An indication of a dirty fuel oil strainer would be Correct answer-a large pressure drop across the
strainer
If air supplied for combustion mixes with gases of combustion, it could lead to Correct answer-a
loss of air for combustion and lower boiler efficiency.
Chemicals added to the boiler water change the scale-forming salts into Correct answer-a non-
adhering sludge
The purpose of a flame failure control is to protect the boiler Correct answer-a possible furnace
explosion
To eliminate the danger of a furnace explosion during startup, the firing sequence must first allow for
Correct answer-a pre purge period.
A secondary means of determining water level in a boiler are Correct answer-try cocks
The boiler steam-pressure gauge is protected from high temperatures by Correct answer-a siphon.
The rotary cup burner atomizes fuel oil using Correct answer-a spinning cup and high velocity air.
flow meters Correct answer-measure the rate of flow of a variety of fluids
The open feed water heater is located Correct answer-above the feed water pump(s).
Without air pressure. Correct answer-The positioning combustion control system used on older
boilers cannot function
The air-to-gas ratio is maintained by a(n) Correct answer-air damper, butterfly valve, and
modulating motor and linkage
Draft Correct answer-A difference in pressure that causes air or gases to flow.
On the fuel oil system, the purpose of the duplex strainers on the suction line between the tank and
fuel oil pump is Correct answer-to allow one strainer to be cleaned without securing the boiler.
The cold lime-soda process Correct answer-softens the boiler water at ambient temperature
Safety valve connections must be approved Correct answer-American Society of Mechanical
Engineers (ASME).
An accumulation of combustible gases can cause Correct answer-a furnace explosion
New or re-tubed boilers should be cleaned with Correct answer-an alkaline detergent solution
VERIFIED ANSWERS|LATEST VERSION|UPDATED TO
PASS
The pressure at the base of a vertical foot of water is Correct answer-0.433 psi.
When performing a hydrostatic test, the pressure on the boiler should be increased to Correct
answer-1 ½ times the safety valve setting .
A boiler steam pressure gauge should have a range of Correct answer-1 ½ to 2 times the safety
valve setting:
The maximum size of the bottom blowdown line and the surface blowdown line is Correct answer-
2 1/2"
During startup, the boiler vent should remain open until a pressure of Correct answer-
approximately 3 psiis on the boiler
No. 6 fuel oil Correct answer-must be heated to reach the required temperature for combustion.
No. 6 fuel oil Correct answer-must be heated in order to be pumped.
Fuel oil heaters must be used when burning Correct answer-No. 6 fuel oil
Water weighs approximately Correct answer-8.3lb/gal.
In order to burn 1 lb. of fuel, Correct answer-approximately 15 lb. of air is needed.
A low pressure steam boiler has a maximum allowable working pressure (MAWP) of up to Correct
answer-15
A boiler generating 20,000 lb of steam/hr must be supplied with at least Correct answer-20,000 lb
of water/hr.
Needed for the combustion of fuel is made up of approximately Correct answer-21% oxygen and
79 % nitrogen
The automatic non return valve on a boiler being cut in on a line should be opened when the steam
pressure on the boiler reaches Correct answer-75% to 85% of the line pressure
. A sudden drop in boiler steam pressure without a corresponding drop in boiler water temperature
could result Correct answer-in a boiler explosion.
Super heater tubes are protected from warping or burning out by Correct answer-a continuous
flow of steam .
Because of the large volume of water, the boiler most likely to cause a boiler explosion Correct
answer-a fire tube boiler.
, Stays and braces are needed to prevent bulging in Correct answer-a fire tube boiler (high or low
pressure).
After a boiler has had major repair work made on its steam or water side or has developed a low
water condition, it should be subjected to Correct answer-a hydrostatic test
An indication of a dirty fuel oil strainer would be Correct answer-a large pressure drop across the
strainer
If air supplied for combustion mixes with gases of combustion, it could lead to Correct answer-a
loss of air for combustion and lower boiler efficiency.
Chemicals added to the boiler water change the scale-forming salts into Correct answer-a non-
adhering sludge
The purpose of a flame failure control is to protect the boiler Correct answer-a possible furnace
explosion
To eliminate the danger of a furnace explosion during startup, the firing sequence must first allow for
Correct answer-a pre purge period.
A secondary means of determining water level in a boiler are Correct answer-try cocks
The boiler steam-pressure gauge is protected from high temperatures by Correct answer-a siphon.
The rotary cup burner atomizes fuel oil using Correct answer-a spinning cup and high velocity air.
flow meters Correct answer-measure the rate of flow of a variety of fluids
The open feed water heater is located Correct answer-above the feed water pump(s).
Without air pressure. Correct answer-The positioning combustion control system used on older
boilers cannot function
The air-to-gas ratio is maintained by a(n) Correct answer-air damper, butterfly valve, and
modulating motor and linkage
Draft Correct answer-A difference in pressure that causes air or gases to flow.
On the fuel oil system, the purpose of the duplex strainers on the suction line between the tank and
fuel oil pump is Correct answer-to allow one strainer to be cleaned without securing the boiler.
The cold lime-soda process Correct answer-softens the boiler water at ambient temperature
Safety valve connections must be approved Correct answer-American Society of Mechanical
Engineers (ASME).
An accumulation of combustible gases can cause Correct answer-a furnace explosion
New or re-tubed boilers should be cleaned with Correct answer-an alkaline detergent solution
