FDNY S-92 QUESTIONS WITH CORRECT ANSWERS RATED A+

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). 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. - 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. - 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 - 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). - 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 - LOWER FLAMMABLE LIMIT (LFL) The transfer of flammable or combustible liquids between cargo tanks or tank cars and containers, tanks piping and other equipment that is to be used in process operations. - PROCESS TRANSFER what shall be on site and available for inspection at all times? - All FDNY original permits A method of supervision by the holder who is required to be personally present on the premises - PERSONAL SUPERVISION Portable fueled space heaters can be fueled using - gaseous, liquid or solid fuels Solid fueled salamanders - solid-fuel open-flame-heaters. Solid fueled salamanders are only permitted for - heating newly poured concrete in buildings undergoing construction including form work as well steel structures solid fueled pots are usually ignited - 6 to 8 hours before the concrete pour is scheduled