BLACK SEAL HIGH PRESSURE 2026 ALL TESTED
QUESTIONS AND ANSWERS SURE A+
✔✔Oxygen in boiler water causes ____. - ✔✔Pitting
✔✔A boiler that is priming has ____. - ✔✔Water carried over with the steam.
✔✔The first thing a boiler operator should do when taking over a shift is _____. -
✔✔Check the boiler water level
✔✔Preparation for a boiler inspection requires having the boiler ____. - ✔✔Cooled,
Opened, and thoroughly cleaned
✔✔Cast iron sectional boilers are built for what type of draft firing? - ✔✔Mechanical
forced and/or induced
✔✔A furnace explosion can be prevented by ____. - ✔✔Purging after ignition failure
✔✔If in good standing, an expired license can be renewed (with a fine) within: - ✔✔3
years
✔✔As solids and alkalinity in boiler water increase: - ✔✔Waterside scaling is increased
, ✔✔What is the most readily discernible indication of firing with insufficient secondary
air? - ✔✔Black smoke coming from the stack
✔✔How do you clean new or retubed boilers? - ✔✔With an alkaline detergent solution
✔✔What is the maximum size of the bottom blowdown line and surface blowdown
lines? - ✔✔2 1/2 inches
✔✔To avoid the danger of a furnace explosion during the start-up, the firing sequence
allows for: - ✔✔a pre-purged period
✔✔What would cause scale in a boiler? - ✔✔Calcium and Magnesium
✔✔What is the pressure called in an idle boiler? - ✔✔Static Pressure
✔✔What is the basic function of an automatic feedwater regulator? - ✔✔Maintain boiler
water at proper level
✔✔What happens if a steam traps continuously blows through? - ✔✔Steam will vent
from condensate tank
✔✔A boiler operator's log must be maintained in all plants with over: - ✔✔100
horsepower
✔✔T/F: A boiler is an open vessel - ✔✔False
✔✔What is the heat content of one therm of natural gas? - ✔✔100,000 Btu's
✔✔Carryover could be dangerous and cause: - ✔✔Water Hammer
✔✔What is the most common cause of problems in hot water systems? - ✔✔Air
✔✔If your boiler had a fire inside the furnace after the unit has shut down, what would
you check? - ✔✔Fuel system
✔✔If a boiler has been dry fired, what device did not work properly? - ✔✔Low-water
cutoff
✔✔Natural water may contain: - ✔✔Solids, Gases, & Pollutants
QUESTIONS AND ANSWERS SURE A+
✔✔Oxygen in boiler water causes ____. - ✔✔Pitting
✔✔A boiler that is priming has ____. - ✔✔Water carried over with the steam.
✔✔The first thing a boiler operator should do when taking over a shift is _____. -
✔✔Check the boiler water level
✔✔Preparation for a boiler inspection requires having the boiler ____. - ✔✔Cooled,
Opened, and thoroughly cleaned
✔✔Cast iron sectional boilers are built for what type of draft firing? - ✔✔Mechanical
forced and/or induced
✔✔A furnace explosion can be prevented by ____. - ✔✔Purging after ignition failure
✔✔If in good standing, an expired license can be renewed (with a fine) within: - ✔✔3
years
✔✔As solids and alkalinity in boiler water increase: - ✔✔Waterside scaling is increased
, ✔✔What is the most readily discernible indication of firing with insufficient secondary
air? - ✔✔Black smoke coming from the stack
✔✔How do you clean new or retubed boilers? - ✔✔With an alkaline detergent solution
✔✔What is the maximum size of the bottom blowdown line and surface blowdown
lines? - ✔✔2 1/2 inches
✔✔To avoid the danger of a furnace explosion during the start-up, the firing sequence
allows for: - ✔✔a pre-purged period
✔✔What would cause scale in a boiler? - ✔✔Calcium and Magnesium
✔✔What is the pressure called in an idle boiler? - ✔✔Static Pressure
✔✔What is the basic function of an automatic feedwater regulator? - ✔✔Maintain boiler
water at proper level
✔✔What happens if a steam traps continuously blows through? - ✔✔Steam will vent
from condensate tank
✔✔A boiler operator's log must be maintained in all plants with over: - ✔✔100
horsepower
✔✔T/F: A boiler is an open vessel - ✔✔False
✔✔What is the heat content of one therm of natural gas? - ✔✔100,000 Btu's
✔✔Carryover could be dangerous and cause: - ✔✔Water Hammer
✔✔What is the most common cause of problems in hot water systems? - ✔✔Air
✔✔If your boiler had a fire inside the furnace after the unit has shut down, what would
you check? - ✔✔Fuel system
✔✔If a boiler has been dry fired, what device did not work properly? - ✔✔Low-water
cutoff
✔✔Natural water may contain: - ✔✔Solids, Gases, & Pollutants
