FRP Composites use several materials that are flammable. Examples include gelcoat, resin, cleaning solvents, initiators, mold treatments, and other chemicals used in the molding and polishing processes. These materials must avoid sources of ignition from electrical hazards such as outlets, power tools, and extension cords.
A story was once relayed to me about a close call involving power tools and acetone, which of course is very flammable. A moderate spill occurred inside a fiberglass part, so cleanup efforts
began with the use of a shop vac. This resulted in an explosion and small fire. The elecrical motor in the vacuum caught the acetone vapors on fire and quickly burned off the remaining acetone. Fortunately the operator was only mildly shook up, but this shows the importance of proper training and knowledge for the chemicals being used.
Static electricity is a hazard that is often overlooked and underestimated. Measures can be taken to reduce this hazard such as proper grounding and monitoring the humidity levels.
Open flames and high temperature areas should also be avoided. Smoking around these chemicals can lead to bad consequences.