This paper attempts to identify some of the specifics of the process used to obtain approval for use of plastic pallets as equivalent to wood pallets for use in warehouse storage. This paper is written to look at the issue in general and is not intended to cover all storage situations. Your specific situation should be evaluated by a fire protection specialist. Most plastic pallets are molded out of polyolefin materials such as high density polyethylene or polypropylene. These materials are more flammable than the wood used to make pallets. Over the years the industry has argued with the fire protection establishment that plastic pallets, while they burn hotter than wood, are much more difficult to ignite. Fire protection people counter with the fact that most warehouse fires are arson and if an arsonist wants to start a fire they will do what ever they need to do to get a fire started.