BLACK SEAL LOW PRESSURE EXAM WITH
CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+
what happens if a steam trap continuously blows through? -
ANSWERS-steam vents from the condensate tank
boiler water should have a pH of - ANSWERS-11
where does fuel automize? - ANSWERS-at the burner tip
Vacuum gauges are calibrated in inches of - ANSWERS-mercury
below
The rotary cup burner atomizes fuel oil using - ANSWERS-a spinning
cup and high velocity air
Retubed or new boilers are cleaned with - ANSWERS-alkaline
detergent
, what chemical prevents pitting? - ANSWERS-sodium sulfite
An OS&Y valve offers the least resistance to flow - ANSWERS-true
a welded repair is allowed on the pressure retaining area of a boiler
or pressure vessel - ANSWERS-true
If a baffle breaks, what happens? - ANSWERS-Increase of furnace
gases & stack temperature
When would a high suction line be used in a fuel tank? - ANSWERS-
when there is sludge or water in the tank
If not performed annually, what can cause a catastrophic event -
ANSWERS-Full boiler inspection
The science of heating and cooling with water is called - ANSWERS-
hydronics
What is the most common cause of cast iron boiler failure? -
ANSWERS-Cracking
What is the most common cause of problems in a hot water
system? - ANSWERS-air
CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+
what happens if a steam trap continuously blows through? -
ANSWERS-steam vents from the condensate tank
boiler water should have a pH of - ANSWERS-11
where does fuel automize? - ANSWERS-at the burner tip
Vacuum gauges are calibrated in inches of - ANSWERS-mercury
below
The rotary cup burner atomizes fuel oil using - ANSWERS-a spinning
cup and high velocity air
Retubed or new boilers are cleaned with - ANSWERS-alkaline
detergent
, what chemical prevents pitting? - ANSWERS-sodium sulfite
An OS&Y valve offers the least resistance to flow - ANSWERS-true
a welded repair is allowed on the pressure retaining area of a boiler
or pressure vessel - ANSWERS-true
If a baffle breaks, what happens? - ANSWERS-Increase of furnace
gases & stack temperature
When would a high suction line be used in a fuel tank? - ANSWERS-
when there is sludge or water in the tank
If not performed annually, what can cause a catastrophic event -
ANSWERS-Full boiler inspection
The science of heating and cooling with water is called - ANSWERS-
hydronics
What is the most common cause of cast iron boiler failure? -
ANSWERS-Cracking
What is the most common cause of problems in a hot water
system? - ANSWERS-air