Accidents due to electricity is caused due to short circuting,overloading ,insulation failure etc precautions    connection have to be done properly,avoid overloading ,dont  operate with wet hands, use rubber chappel while handline ele.appliance use wires with good insulation.Accidents due to lpg is due to gas leakage,improper connection of the regulator leakage in the rubbertube.itcan be avoided by the proper connection of the regulator,rubber tubeshould not come in contact with the flame.