Question | Answer |
Acrolein | Toxic gas produced when wood, paper, plastic materials, and oils and fats burn; inhaled, acrolein can cause nose and throat irritation, nausea, shortness of breath, pulmonary edema, lung damage, and can eventually lead to death. |
Airline System | system in which breathing air is supplied to the SCBA wearer from a remove source of air. |
Benzene | Highly toxic carcinogen produced when PVC plastics and gasoline burn; inhalation of high levels can cause unconsciousness and death from respiratory paralysis. |
E.C.O. | Entry Control Officer |
Hydrogen Chloride | Gas produced by the combustion of polyvinyl chlorides. Forms hydrochloric acid in the respiratory tract. |
Hydrogen Cyanide | Produced by the combustion of nitrogen bearing substances. |
Hydrogen Sulfide | A colorless gas with a strong rotten egg odor, produced when rubber insulation, tires, and woolen materials burn and by the decomposition of sulfur bearing organic materials; deactivates the sense of smell. |
Isomayl Acetate | Banana oil, used for an odor test of face piece fit. |
LEL: Lower Explosive Limit | The lowest percentage of fuel/oxygen mixture required to support combustion. |
Mainline Valve | The valve, located on the regulator, that lets air from the cylinder travel through the regulator to the face piece. |
NFPA | National Fire Protection Association |
NFPA 704 Placard | Color coded, symbol specific placard affixed to facilities. It informs of fire hazards, life hazards, reactivity potential and special hazards of stored materials. |
Oxides of Nitrogen | Nitrogen oxide and nitric oxide, can mix with moisture in the air and respiratory tract and form nitric and nitrous acids that can cause burns to the lungs. |
Phosgene | Toxic gas produced when refrigerants such as freon, plastics containing polyvinyl chloride, or electrical wiring insulation contacts flame. |
PVC (Polyvinyl Chloride) | A synthetic chemical used in the manufacture of plastics. |
Speaking Diaphragm | Device on facepieces that aid in oral communication. |
STEL | A 15 minute time weighted average that should not be exceeded at any time during a work day. Exposures should not last longer than 15 minutes and should not be repeated more than 4 times per day with at least 60 minutes between exposures. |
TLV (Threshold Limit Value) | A time weighted average concentration under which most people can work consistently for 8 hours a day, day after day, with no harmful effects. |