Crane Safety and Emergency Procedures Practice Test

The探aining concept here is selecting a fire extinguisher rated for the actual hazards on a mobile crane. The minimum you should have is a 10B:C extinguisher. The B rating means it can handle flammable liquid fires (like hydraulic oil, fuel, lubricants), and the number 10 indicates a fairly capable capacity for those kinds of fires. The C letter means it’s suitable for electrical fires as well. Together, 10B:C covers the two most common crane hazards: liquid fuel/oil fires and electrical equipment fires. Less-capacity B ratings (like 2B or 5B) or a fire extinguisher without a C rating wouldn’t provide adequate protection for typical crane risks. So the minimum size and rating needed is 10B:C.