LOW PRESSSURE BOILERS FINAL
EXAM QUESTIONS WITH CORRECT
ANSWERS
4 MAIN BOILER SYSTEMS - ANSWERSFUEL, DRAFT, FEEDWATER ,STEAM
DRAFTS TYPES - ANSWERSNATURAL ,MECHANICAL( INDUCED, FORCED)
Water Hammer - ANSWERSA condition where a hammering or banging sound is
created in steam lines when water is carried along in lines and hits elbows, valves, and
other obstructions.53
Try Cocks - ANSWERSValves located on the water column used to determine the water
level if the gauge glass is not functional.47
blowdown - ANSWERSThe process of evacuating water and undesirable accumulated
material.49 DONE ON LOW AND LIGHT FIRE
BOILER VENT - ANSWERSA boiler fitting used to vent air from inside the boiler.60
CARRY OVER - ANSWERSA condition that occurs when small particles of boiler water
are carried over into steam lines.53
Priming - ANSWERSSlugs of boiler water carried into steam lines.53
Types of AIR - ANSWERSPRIMARY,SECONDARY,EXCESS,INCOMPLETE,
THEORETICAL pg 15
Types of combustion - ANSWERSPERFECT,COMPLETE,INCOMPLETE Spontaneous
pg 15
British Thermal Unit (BTU) - ANSWERSAmount of heat energy required to raise the
temperature of 1 lb of water 1 degree Fahrenheit.126
Combination burner - ANSWERSA fuel system that can use natural gas or fuel oil.140
GAS VALVE TRAIN - ANSWERS
TYPES OF WATER - ANSWERS
Chilled Water System - ANSWERSis a cooling system in which water or other liquid is
chilled and circulated to the building space
, Condenser - ANSWERSA heat exchanger that removes heat from a high pressure
refrigerant
Compressor - ANSWERSa mechanical device that compresses refrigerant vapor.
The Most Important Rule - ANSWERSthe most important rule for the safe operations of
boilers is to maintain the proper water level at all times and as constant level as
conditions will permit. If the water is not visible shut the boiler down.
outdoor air is - ANSWERSpositive
makeupwater - ANSWERSis added water added to the boiler to replace lost water from
steam leaks, blowdown, and other losses in the system.53
Draft - ANSWERSThe flow of air or gases or combustion caused by a difference in
pressure between two points.167
Air Types - ANSWERSsupply ,return ,makeup ,exhaust, mixed , outdoor(vent)
return air is negative or positive - ANSWERSNEGATIVE
TYPES OF BLOW DOWN - ANSWERSSURFACE,WATER COLUM,GAGUE
GLASS,BOTTOM
Blowdown - ANSWERSThe process of evacuating water and undesirable accumulated
material.49
BOTTOM BLOW DOWN - ANSWERS1.How is sludge removed.54
2.Valves located on the blowdown line used to release water from the bottom of the
boiler.52
3.Piping located at the lowest point of the water side of a boiler.52
Gauge glass - ANSWERSa tubular glass Colum that indicates the water level in a boiler
.47
Water Hammer - ANSWERSA condition where a hammering or banging sound is
created in steam lines when water is carried along in lines and hits elbows, valves, and
other obstructions.53
SURFACE BLOWDOWN VALVE - ANSWERSA valve located on the surface blowdown
line used to release water and surface impurities from the boiler.56
water column - ANSWERSA boiler fitting that reduces the turbulence of boiler water to
provide an accurate water level in the gauge glass.47 opened for 5-10 secs each shift
EXAM QUESTIONS WITH CORRECT
ANSWERS
4 MAIN BOILER SYSTEMS - ANSWERSFUEL, DRAFT, FEEDWATER ,STEAM
DRAFTS TYPES - ANSWERSNATURAL ,MECHANICAL( INDUCED, FORCED)
Water Hammer - ANSWERSA condition where a hammering or banging sound is
created in steam lines when water is carried along in lines and hits elbows, valves, and
other obstructions.53
Try Cocks - ANSWERSValves located on the water column used to determine the water
level if the gauge glass is not functional.47
blowdown - ANSWERSThe process of evacuating water and undesirable accumulated
material.49 DONE ON LOW AND LIGHT FIRE
BOILER VENT - ANSWERSA boiler fitting used to vent air from inside the boiler.60
CARRY OVER - ANSWERSA condition that occurs when small particles of boiler water
are carried over into steam lines.53
Priming - ANSWERSSlugs of boiler water carried into steam lines.53
Types of AIR - ANSWERSPRIMARY,SECONDARY,EXCESS,INCOMPLETE,
THEORETICAL pg 15
Types of combustion - ANSWERSPERFECT,COMPLETE,INCOMPLETE Spontaneous
pg 15
British Thermal Unit (BTU) - ANSWERSAmount of heat energy required to raise the
temperature of 1 lb of water 1 degree Fahrenheit.126
Combination burner - ANSWERSA fuel system that can use natural gas or fuel oil.140
GAS VALVE TRAIN - ANSWERS
TYPES OF WATER - ANSWERS
Chilled Water System - ANSWERSis a cooling system in which water or other liquid is
chilled and circulated to the building space
, Condenser - ANSWERSA heat exchanger that removes heat from a high pressure
refrigerant
Compressor - ANSWERSa mechanical device that compresses refrigerant vapor.
The Most Important Rule - ANSWERSthe most important rule for the safe operations of
boilers is to maintain the proper water level at all times and as constant level as
conditions will permit. If the water is not visible shut the boiler down.
outdoor air is - ANSWERSpositive
makeupwater - ANSWERSis added water added to the boiler to replace lost water from
steam leaks, blowdown, and other losses in the system.53
Draft - ANSWERSThe flow of air or gases or combustion caused by a difference in
pressure between two points.167
Air Types - ANSWERSsupply ,return ,makeup ,exhaust, mixed , outdoor(vent)
return air is negative or positive - ANSWERSNEGATIVE
TYPES OF BLOW DOWN - ANSWERSSURFACE,WATER COLUM,GAGUE
GLASS,BOTTOM
Blowdown - ANSWERSThe process of evacuating water and undesirable accumulated
material.49
BOTTOM BLOW DOWN - ANSWERS1.How is sludge removed.54
2.Valves located on the blowdown line used to release water from the bottom of the
boiler.52
3.Piping located at the lowest point of the water side of a boiler.52
Gauge glass - ANSWERSa tubular glass Colum that indicates the water level in a boiler
.47
Water Hammer - ANSWERSA condition where a hammering or banging sound is
created in steam lines when water is carried along in lines and hits elbows, valves, and
other obstructions.53
SURFACE BLOWDOWN VALVE - ANSWERSA valve located on the surface blowdown
line used to release water and surface impurities from the boiler.56
water column - ANSWERSA boiler fitting that reduces the turbulence of boiler water to
provide an accurate water level in the gauge glass.47 opened for 5-10 secs each shift
