1.A gaseous mixture in air contains 5% 1,3 Butadiene, 6% Methane and 3.3% Ethylene, and 2.4% hydrogen. Calculate the UFL and LFL of the mixture. Is this mixture flammable?
2. In les vegas, NV, a container of glacial acetic acid waste is being transported in a 55 gallon polyurethane drum in the back of a tractor-trailer. The waste generator filled the drum so that 54.4 gallons of waste acetic acid in the drum It was filled inside a facility where temperature was 65 degrees F. During transport to the transportation, storage, disposal facility (TSDF), the truck breaks down in the desert right outside of las vegas. There is a thermometer in the back of the trailer that shows the temperature has reached 66 degrees What is the new volume of the acetic acid in the drum?
3. estimate the flash point of formaldehyde using satyanarayana and rao. compare with listed values for flash point for formaldehyde
4. the composition of a natural gas mixture is 95% methane, 3.2% ethane, 0.8% propane, 1% nitrogen. federal pipeline safety regulations require that the combustible gases be detectable by natural odor or by odorization at 1/5 the lower explosive limit (by a person with a normal sense of smell). At what concentration must this natural gas mixture be able to be detected? how does this compare with the door threshold for methyl mercaptan?
5. the natural gas (in question is in a tank in a garage. The tank has a pin-hole leak with a flow rate of 4 litres per minute. The garage is 10ft x 20ft x 9ft (high). How long will it take for the room to reach a flammable mixture?
6. much of the data associated with carbon monoxide exposure comes from animal test data and human exposure data from non-fire sources. explain why the data should be scrutinized when using it to evaluate CO exposure from fire-related sources.
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