OREGON HEATING OIL TANK SUPERVISOR
CERTIFICATION EXAMINATION TEST 2026
◉ No more than how many gallon oil TanK (1) can be exposed in a
building? Answer: 660 gallons
◉ Exposed tanks(more than one) in a building cannot be more than
how many gallons? Answer: 1320 gallons
◉ All oil tanks over how many gallons must have an open air pipe?
Answer: 10 gallons
◉ All oil tanks over 10 gallons must have an open air pipe, minimum
pipe size of 1 and 1/4, The fill pipe cannot exceed the size of vent
pipe both must terminate? Answer: outside building
◉ What is the maximum total capacity of all the tanks located above
the lowest level of a building cannot exceed how many gallons?
Answer: 60 gallons
◉ The maximum total capacity of all the tanks located above the
lowest level of a building has an exception what is it? Answer: A tank
on slab adjacent to the first floor
,◉ what cant be used for fill or vent piping? Answer: plastic pipe,
solder copper tubing and fittings
◉ What must be done with any unused openings of an oil tank?
Answer: made vapor tight
◉ All oil tanks over 10 gallons must have an open air vent pipe and a
minimum pipe size of? Answer: 1 1/4
◉ All oil tanks with fill and vent pipes must have what type of
gauging ? Answer: Visual and Audible
◉ Vent pipe must terminate at least how many feet above grade?
Answer: 3 ft or above the highest snow level
◉ Massachusetts flash point is Answer: 115 F
◉ Massachusetts flame point is Answer: 635F
◉ Your vent pipe must terminate _______ feet vertically and ____ feet
horizontally from any building opening Answer: 2ft, 2ft
◉ What must vent pipe have on the termination outside building?
Answer: Water tight cap
,◉ Fill and vent pipes are slopped in which direction Answer:
Towards tank
◉ Are fixed sash (no openings) windows considered a building
opening to apply to fill and vent piping? Answer: No
◉ A space supplying air for combustion whose volume is less than
50 cubic feet per 1000 BTU per hour input of all appliances in the
space. Answer: Confined space
◉ What is the maximum voltage used for oil burner circuit Answer:
150 Volts
◉ Piping used for oil burner oil lines ( except for conversion range
burners) shall not be smaller than what size? Answer: 3/8 inch
nominal pipe or tubing
◉ What is the exception to not using compression fittings on oil
supply lines? Answer: Gauge able 2 ferrule swage type fittings
◉ Before an oil tank is removed, is a permit need to be obtained?
Answer: Yes
, ◉ Can Teflon tape be used on an oil supply lines Answer: No
◉ Are compression fittings acceptable on oil supply lines Answer:
No
◉ Is a draft control damper required Answer: Yes
◉ Does oil tank under 10 gallons used with an oil burner need an oil
permit? Answer: No
◉ Outside oil tanks must be mounted on what? Answer: A slab 4
inch thick and extends 8 inch all around tank with one pour
◉ Why would all the piping need to come off the top of the tank
Answer: Any tank that may freeze
◉ An oil tank of more than 60 gallons other than outside above
ground tank must have what kind of cover Answer: Metal cover
identifying as fuel oil fill
◉ Visual or audible level indicators devices located inside building
must not what Answer: Discharge oil or vapors into the building
CERTIFICATION EXAMINATION TEST 2026
◉ No more than how many gallon oil TanK (1) can be exposed in a
building? Answer: 660 gallons
◉ Exposed tanks(more than one) in a building cannot be more than
how many gallons? Answer: 1320 gallons
◉ All oil tanks over how many gallons must have an open air pipe?
Answer: 10 gallons
◉ All oil tanks over 10 gallons must have an open air pipe, minimum
pipe size of 1 and 1/4, The fill pipe cannot exceed the size of vent
pipe both must terminate? Answer: outside building
◉ What is the maximum total capacity of all the tanks located above
the lowest level of a building cannot exceed how many gallons?
Answer: 60 gallons
◉ The maximum total capacity of all the tanks located above the
lowest level of a building has an exception what is it? Answer: A tank
on slab adjacent to the first floor
,◉ what cant be used for fill or vent piping? Answer: plastic pipe,
solder copper tubing and fittings
◉ What must be done with any unused openings of an oil tank?
Answer: made vapor tight
◉ All oil tanks over 10 gallons must have an open air vent pipe and a
minimum pipe size of? Answer: 1 1/4
◉ All oil tanks with fill and vent pipes must have what type of
gauging ? Answer: Visual and Audible
◉ Vent pipe must terminate at least how many feet above grade?
Answer: 3 ft or above the highest snow level
◉ Massachusetts flash point is Answer: 115 F
◉ Massachusetts flame point is Answer: 635F
◉ Your vent pipe must terminate _______ feet vertically and ____ feet
horizontally from any building opening Answer: 2ft, 2ft
◉ What must vent pipe have on the termination outside building?
Answer: Water tight cap
,◉ Fill and vent pipes are slopped in which direction Answer:
Towards tank
◉ Are fixed sash (no openings) windows considered a building
opening to apply to fill and vent piping? Answer: No
◉ A space supplying air for combustion whose volume is less than
50 cubic feet per 1000 BTU per hour input of all appliances in the
space. Answer: Confined space
◉ What is the maximum voltage used for oil burner circuit Answer:
150 Volts
◉ Piping used for oil burner oil lines ( except for conversion range
burners) shall not be smaller than what size? Answer: 3/8 inch
nominal pipe or tubing
◉ What is the exception to not using compression fittings on oil
supply lines? Answer: Gauge able 2 ferrule swage type fittings
◉ Before an oil tank is removed, is a permit need to be obtained?
Answer: Yes
, ◉ Can Teflon tape be used on an oil supply lines Answer: No
◉ Are compression fittings acceptable on oil supply lines Answer:
No
◉ Is a draft control damper required Answer: Yes
◉ Does oil tank under 10 gallons used with an oil burner need an oil
permit? Answer: No
◉ Outside oil tanks must be mounted on what? Answer: A slab 4
inch thick and extends 8 inch all around tank with one pour
◉ Why would all the piping need to come off the top of the tank
Answer: Any tank that may freeze
◉ An oil tank of more than 60 gallons other than outside above
ground tank must have what kind of cover Answer: Metal cover
identifying as fuel oil fill
◉ Visual or audible level indicators devices located inside building
must not what Answer: Discharge oil or vapors into the building
