HAZWOPER 40 A+ Compiled Questions and CORRECT Answers

sources of site info - - site location map - site building - proximity of nearby sensitive human and environmental receptors - overhead utilities - entry and access roads - fire hydrants - storm drains - DOT and NIOSH guide books - property boundary inspection - interview with site owner Safety data sheets (SDS) - a document that summarizes key information about a chemical, its composition, which exposures may be dangerous, what to do if an exposure should occur, and how to clean up spills oxygen levels - atmosphere should be 20% oxygen - if below 19.5% or above 23%, the air is hazardous Lower Explosive Limit (LEL) - Is the minimum concentration of vapor to air below which a flame will not propagate in the presence of an ignition source. Also known as "too lean to burn." - should be 10%, above this is hazardous Photoionization Detector (PID) - Gas detector that measures volatile compounds in concentrations of parts per million and parts per billion using ultraviolet light Flame Ionization Detector (FID) - TOV detector; analyte molecules eluting from the column are burned in a flame and produce electrons. This electric current is amplified and measured emergency response - response from outside the area of the release by other designated responders where the release results or likely results in an uncontrolled release of hazardous substances Hazmat team - typically employees designated by their employer who are expected to perform work to handle and control leaks or spills of hazardous substances