CORRECT ANSWERS
The following are types of what? LPG, CNG, piped natural gas or solid fuel (coke). - Correct
answers✔Portable fueled salamanders/space heaters
National Institute for Occupational Safety and Health (NIOSH) Recommended
Exposure Limit (REL) for carbon monoxide - Correct answers✔35 parts per million (ppm) over
an 8 hour period
What is the third leading cause of fires in buildings under construction
? - Correct answers✔temporary heating
What is direct heat flow through matter? - Correct answers✔CONDUCTION
What is the transport of heat within a gas or liquid caused by the actual
flow of the material itself - Correct answers✔CONVECTION
the transmission of electromagnetic rays through space. - Correct answers✔Radiation
Heaters that release all of the heat generated by the flame (and the emissions that result)
directly into the heated area - Correct answers✔Direct-fired heaters
What are the most common type of heater found at construction sites?
- Correct answers✔Direct-fired heaters
, The flame of this heater is enclosed in a heat exchanger that separates combustion products from
the air to be heated. - Correct answers✔Indirect-Fired Heaters
When may portable oil-fueled space heaters be stored, handled and used at construction sites -
Correct answers✔only during the heating season (October 15th - May 30th).
A fail-safe system or other approved device, equipment or system designed
to shut off flow caused by a rupture in a pressurized piping system. -
Correct answers✔EXCESS FLOW CONTROL
A liquefied compressed gas which, under a charged pressure, is partially liquid at a temperature
of 68°F (20°C) and which is a flammable gas. - Correct answers✔FLAMMABLE LIQUEFIED
GAS
supervision by the holder of any department certificate who is responsible but need not be
personally present on the premises at all times - Correct answers✔GENERAL SUPERVISION
A material having a melting point that is equal to or less than 68°F (20°C) and a boiling point
that is greater than 68°F (20°C) at 14.7 psia (101 kpa). - Correct answers✔LIQUID
The minimum concentration of vapor in air at which propagation of
flame will occur in the presence of an ignition
source. The LFL is sometimes referred to as LEL or lower explosive limit - Correct
answers✔LOWER FLAMMABLE LIMIT (LFL)