FDNY S-92 ACTUAL QUESTIONS AND
ANSWERS 2025
, The following are types of what? LPG, CNG, piped natural gas or solid fuel (coke).
Portable fueled salamanders/space heaters
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL)
for carbon monoxide
35 parts per million (ppm) over an 8 hour period
What is the third leading cause of fires in buildings under construction ?
temporary heating
What is direct heat flow through matter?
CONDUCTION
What is the transport of heat within a gas or liquid caused by the actual flow of the
material itself
CONVECTION
the transmission of electromagnetic rays through space.
Radiation
Heaters that release all of the heat generated by the flame (and the emissions that
result) directly into the heated area
Direct-fired heaters
What are the most common type of heater found at construction sites?
Direct-fired heaters
The flame of this heater is enclosed in a heat exchanger that separates combustion products from the
air to be heated.
Indirect-Fired Heaters
When may portable oil-fueled space heaters be stored, handled and used at construction sites
only during the heating season (October 15th - May 30th).
ANSWERS 2025
, The following are types of what? LPG, CNG, piped natural gas or solid fuel (coke).
Portable fueled salamanders/space heaters
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL)
for carbon monoxide
35 parts per million (ppm) over an 8 hour period
What is the third leading cause of fires in buildings under construction ?
temporary heating
What is direct heat flow through matter?
CONDUCTION
What is the transport of heat within a gas or liquid caused by the actual flow of the
material itself
CONVECTION
the transmission of electromagnetic rays through space.
Radiation
Heaters that release all of the heat generated by the flame (and the emissions that
result) directly into the heated area
Direct-fired heaters
What are the most common type of heater found at construction sites?
Direct-fired heaters
The flame of this heater is enclosed in a heat exchanger that separates combustion products from the
air to be heated.
Indirect-Fired Heaters
When may portable oil-fueled space heaters be stored, handled and used at construction sites
only during the heating season (October 15th - May 30th).
