BLACK SEAL HIGH PRESSURE 2026
COMPREHENSIVE QUESTIONS AND ANSWERS
SURE A+
✔✔When is the most positive way of checking the water level in a boiler? - ✔✔Try
cocks
✔✔When testing a safety valve by hand, you must: - ✔✔Have at least 75% of popping
pressure
✔✔What prevents a furnace explosion? - ✔✔The purge cycle
✔✔What is the most important rule in operating boilers? - ✔✔Keep water at proper level
✔✔Ignition failure would cause activation of the: - ✔✔Purge Cycle
✔✔What is the capacity of a safety valve measured in? - ✔✔Lbs. of Steam/Hr
✔✔What # oil needs to be preheated with what piece of equipment? - ✔✔#6 oil with an
oil heater
✔✔Combustion air is controlled by: - ✔✔Inlet dampers, fan intake vanes and fan speed
✔✔What type of test is a hardness test? - ✔✔A titration test
✔✔How are the sections of a cast iron boiler put together? - ✔✔Push nipples & Bolts
✔✔Boiler fittings are important for: - ✔✔Safety only
✔✔If a license is expired, how long can it be expired before it is null and void? - ✔✔3
years
, ✔✔T/F: Thermostatic traps: remove air and cool condensate. - ✔✔True
✔✔How many days in advance can you renew your license? - ✔✔60
✔✔What is the purpose of an expansion tank? - ✔✔Allows for expansion of water
✔✔What is the maximum fine for any infraction? - ✔✔$5000 ( 5 Thousand)
✔✔What type of boiler is a HRT boiler? - ✔✔Fire Tube
✔✔T/F: An OS&Y valve offers the least resistance to flow. - ✔✔True
✔✔How many pounds of steam per hour in one boiler horsepower? - ✔✔34.5 lbs./hr
✔✔T/F: A welded repair is allowed on the pressure retaining area of a boiler on
pressure vessel. - ✔✔True
✔✔What letter stamp represents on a low-pressure boiler? - ✔✔H
✔✔The on-off controls of a steam boiler are installed - ✔✔In a vertical position
✔✔What is the minimum fine for not properly posting a license? - ✔✔$500
✔✔What is the first thing you check when entering a boiler room? - ✔✔The water level
✔✔What is the maximum horsepower a low pressure licensed operator can operate to?
- ✔✔No limit
✔✔How often do you check the low water cut-off? - ✔✔Daily
✔✔Where is the make-up water in a hot water boiler? - ✔✔In the return line
✔✔What is the maximum size blowdown line? - ✔✔2 1/2 inches
✔✔T/F: A Chief Engineer is not needed in a low pressure plant. - ✔✔True
✔✔When do you close a boiler vent? - ✔✔When the steam comes out
✔✔What protects sewer lines from high temperatures and pressures from blowdowns? -
✔✔Blowdown tank
COMPREHENSIVE QUESTIONS AND ANSWERS
SURE A+
✔✔When is the most positive way of checking the water level in a boiler? - ✔✔Try
cocks
✔✔When testing a safety valve by hand, you must: - ✔✔Have at least 75% of popping
pressure
✔✔What prevents a furnace explosion? - ✔✔The purge cycle
✔✔What is the most important rule in operating boilers? - ✔✔Keep water at proper level
✔✔Ignition failure would cause activation of the: - ✔✔Purge Cycle
✔✔What is the capacity of a safety valve measured in? - ✔✔Lbs. of Steam/Hr
✔✔What # oil needs to be preheated with what piece of equipment? - ✔✔#6 oil with an
oil heater
✔✔Combustion air is controlled by: - ✔✔Inlet dampers, fan intake vanes and fan speed
✔✔What type of test is a hardness test? - ✔✔A titration test
✔✔How are the sections of a cast iron boiler put together? - ✔✔Push nipples & Bolts
✔✔Boiler fittings are important for: - ✔✔Safety only
✔✔If a license is expired, how long can it be expired before it is null and void? - ✔✔3
years
, ✔✔T/F: Thermostatic traps: remove air and cool condensate. - ✔✔True
✔✔How many days in advance can you renew your license? - ✔✔60
✔✔What is the purpose of an expansion tank? - ✔✔Allows for expansion of water
✔✔What is the maximum fine for any infraction? - ✔✔$5000 ( 5 Thousand)
✔✔What type of boiler is a HRT boiler? - ✔✔Fire Tube
✔✔T/F: An OS&Y valve offers the least resistance to flow. - ✔✔True
✔✔How many pounds of steam per hour in one boiler horsepower? - ✔✔34.5 lbs./hr
✔✔T/F: A welded repair is allowed on the pressure retaining area of a boiler on
pressure vessel. - ✔✔True
✔✔What letter stamp represents on a low-pressure boiler? - ✔✔H
✔✔The on-off controls of a steam boiler are installed - ✔✔In a vertical position
✔✔What is the minimum fine for not properly posting a license? - ✔✔$500
✔✔What is the first thing you check when entering a boiler room? - ✔✔The water level
✔✔What is the maximum horsepower a low pressure licensed operator can operate to?
- ✔✔No limit
✔✔How often do you check the low water cut-off? - ✔✔Daily
✔✔Where is the make-up water in a hot water boiler? - ✔✔In the return line
✔✔What is the maximum size blowdown line? - ✔✔2 1/2 inches
✔✔T/F: A Chief Engineer is not needed in a low pressure plant. - ✔✔True
✔✔When do you close a boiler vent? - ✔✔When the steam comes out
✔✔What protects sewer lines from high temperatures and pressures from blowdowns? -
✔✔Blowdown tank
