FDNY COF P-98 EXAM AND PRACTICE EXAM
ACTUAL EXAM 280+ QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
2026/2027 |ALREADY GRADED A
The person supervising the Fuel-Oil transfer in the building from one floor to another
must hold what type of certificate of fitness
P-98 Certificate of Fitness
In designing the fuel-Oil transfer system, such as diesel #2 oil from the lowest floor to
the floor above the tank level, the following factors must be considered:
- Maximum inlet suction an flow-rate
- Design of oil piping system and discharge pressure
- Proper control strategy
_______________________ fires are caused by ordinary combustible materials (wood,
paper, and cloth), for which the quenching-cooling effect of quantities of water is
present
Class A
A stationary fuel-oil storage tank, and related piping, that is installed on the lowest
floor of a building and that transfers fuel-oil through piping to another stationary fuel-
oil storage tank, shall be under the GENERAL SUPERVISION of a:
P-98 Certificate of Fitness holder
The periodic inspection and testing of such tanks and piping shall be conducted
under the _____________ of such P-98 Certificate of Fitness holder.
Personal supervision
Fuel-oil storage tanks and piping systems shall be inspected at least once
___________ for any evidence of leaks.
,Weekly
Fuel-oil storage tanks shall have their float switches tested how often to ensure that
they are in good working order?
Weekly
No oil burning equipment may be operated until a certificate of compliance has been
issued by the:
NYC Department of Buildings
The P-98 C of F is required for all existing and new buildings where fuel is being
transported from the lowest levels to tanks or equipment on upper floors as required
by the: (2 answer)
- NYC Fire Code
- Mechanical Code
The oil storage tank provides the supply of oil for combustion in the ____________. It
is kept inside a dike.
Oil burner
Which of the following circulates the oil throughout the oil storage tank system?
Suction pump
Dirt and sediment are present in the fuel-oil coming from the oil storage tank.
True
The ___________ removes most contaminants from the oil before the oil reaches the
burner’s strainer.
Oil filter
The suction line has to be at least ______ inches from the bottom of the tank for
sediments not to be absorbed.
6
Excessive vacuum readings indicate that there is an obstruction in the suction line
(such as dirty oil strainer).
True
,What device is used to measure pressure below atmospheric pressure?
Vacuum gauge
What device is designed to shut down the burner system if there is a failure of
ignition or combustion?
Main fuel valve
The ____________ is electrically operated and will open or close the line leading to
the atomizer only for oil burners.
Main fuel valve
Oil circulates through the piping system back to the storage tank through the oil
return line
True
What is provided for safety if the pressure in the oil piping system becomes too
great, or exceeds the recommended manufacturer’s specification?
Pressure relief valves
___________ is stored by the storage tank. It has a oil level gauge which shows the
amount collected.
Leak collector
Combustion is the chemical union of the oxygen in the air with combustible elements
that consists of: (2 answer)
Fuel
Oil
During the combustion process, what percentage of the carbon content of fuel-oil
unites with the oxygen in the air to form carbon dioxide and carbon monoxide?
85%
The hydrogen content of the oil (about 14%) unites with the _________ and produces
water.
Oxygen
, An _________ is primarily a device for processing the liquid fuel for combustion by
accelerating the change from liquid to a vapor that can be mixed with air and burned.
Oil burner
The air that contacts the oil prior to its leaving the nozzle is referred to as:
Primary air
The introduction of air from the blower or fan into the combustion chamber after the
oil has left the nozzle is referred to as:
Secondary air
The mixture of oil and air is sprayed in vapor form into a __________ area where
combustion takes place.
Firebox
____________ is considered as the end product of incomplete combustion. In
addition to being inefficient in the production of heat, the presence of this type of gas
is highly dangerous.
Carbon monoxide
What color would be an indication that a lack of air is present?
Red smoky flame
A __________ is an indication of a great amount of excess air.
White flame
_____________ operate with an internal combustion engine. Air is compressed by a
piston and diesel fuel is injected into the cylinder. The mixture is needed to ignite and
operate the engine.
Diesel generators
Diesel generators should be tested by a qualified technician at minimum once every
___________.
Month
Ideally diesel engines should run at least around 60-75% of their maximum rated
load, and at around _______ of their maximum speed.
ACTUAL EXAM 280+ QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
2026/2027 |ALREADY GRADED A
The person supervising the Fuel-Oil transfer in the building from one floor to another
must hold what type of certificate of fitness
P-98 Certificate of Fitness
In designing the fuel-Oil transfer system, such as diesel #2 oil from the lowest floor to
the floor above the tank level, the following factors must be considered:
- Maximum inlet suction an flow-rate
- Design of oil piping system and discharge pressure
- Proper control strategy
_______________________ fires are caused by ordinary combustible materials (wood,
paper, and cloth), for which the quenching-cooling effect of quantities of water is
present
Class A
A stationary fuel-oil storage tank, and related piping, that is installed on the lowest
floor of a building and that transfers fuel-oil through piping to another stationary fuel-
oil storage tank, shall be under the GENERAL SUPERVISION of a:
P-98 Certificate of Fitness holder
The periodic inspection and testing of such tanks and piping shall be conducted
under the _____________ of such P-98 Certificate of Fitness holder.
Personal supervision
Fuel-oil storage tanks and piping systems shall be inspected at least once
___________ for any evidence of leaks.
,Weekly
Fuel-oil storage tanks shall have their float switches tested how often to ensure that
they are in good working order?
Weekly
No oil burning equipment may be operated until a certificate of compliance has been
issued by the:
NYC Department of Buildings
The P-98 C of F is required for all existing and new buildings where fuel is being
transported from the lowest levels to tanks or equipment on upper floors as required
by the: (2 answer)
- NYC Fire Code
- Mechanical Code
The oil storage tank provides the supply of oil for combustion in the ____________. It
is kept inside a dike.
Oil burner
Which of the following circulates the oil throughout the oil storage tank system?
Suction pump
Dirt and sediment are present in the fuel-oil coming from the oil storage tank.
True
The ___________ removes most contaminants from the oil before the oil reaches the
burner’s strainer.
Oil filter
The suction line has to be at least ______ inches from the bottom of the tank for
sediments not to be absorbed.
6
Excessive vacuum readings indicate that there is an obstruction in the suction line
(such as dirty oil strainer).
True
,What device is used to measure pressure below atmospheric pressure?
Vacuum gauge
What device is designed to shut down the burner system if there is a failure of
ignition or combustion?
Main fuel valve
The ____________ is electrically operated and will open or close the line leading to
the atomizer only for oil burners.
Main fuel valve
Oil circulates through the piping system back to the storage tank through the oil
return line
True
What is provided for safety if the pressure in the oil piping system becomes too
great, or exceeds the recommended manufacturer’s specification?
Pressure relief valves
___________ is stored by the storage tank. It has a oil level gauge which shows the
amount collected.
Leak collector
Combustion is the chemical union of the oxygen in the air with combustible elements
that consists of: (2 answer)
Fuel
Oil
During the combustion process, what percentage of the carbon content of fuel-oil
unites with the oxygen in the air to form carbon dioxide and carbon monoxide?
85%
The hydrogen content of the oil (about 14%) unites with the _________ and produces
water.
Oxygen
, An _________ is primarily a device for processing the liquid fuel for combustion by
accelerating the change from liquid to a vapor that can be mixed with air and burned.
Oil burner
The air that contacts the oil prior to its leaving the nozzle is referred to as:
Primary air
The introduction of air from the blower or fan into the combustion chamber after the
oil has left the nozzle is referred to as:
Secondary air
The mixture of oil and air is sprayed in vapor form into a __________ area where
combustion takes place.
Firebox
____________ is considered as the end product of incomplete combustion. In
addition to being inefficient in the production of heat, the presence of this type of gas
is highly dangerous.
Carbon monoxide
What color would be an indication that a lack of air is present?
Red smoky flame
A __________ is an indication of a great amount of excess air.
White flame
_____________ operate with an internal combustion engine. Air is compressed by a
piston and diesel fuel is injected into the cylinder. The mixture is needed to ignite and
operate the engine.
Diesel generators
Diesel generators should be tested by a qualified technician at minimum once every
___________.
Month
Ideally diesel engines should run at least around 60-75% of their maximum rated
load, and at around _______ of their maximum speed.
