OSFM HAZMAT Exam with Questions and Answers

OSFM HAZMAT Exam with Questions and Answers MC 331 high pressure tank ANSWER - high pressure cargo tank (300 psi) internal working pressure is 250 psi - rounded ends - ammonia, propane, Freon, butane - explosion hazard if flame impingement - spring loaded relief valves (set at 110% of designated maximum working pressure MC 338 cryogenic liquid tank ANSWER - low pressure tank with insulation - low temperatures - reliefs valve near control box (occasional small puffs of white vapor may vent here, is considered normal) Compressed gas tube trailer ANSWER - carry helium, oxygen, hydrogen, and methane - high volume transportation vehicles made up of several cylinders banded together - operating pressure of 3,000 to 5,000 psi Dry bulk trailer ANSWER - carry powders, pellets, fertilizers, grain - not pressurized, but may use pressure to offload contents - V shaped with bottom mounted controls