I'm building a methane gas plant at a landfill and there is a compressor room with the class 1, div 2, group d rating. There is a gas skid in the room that has imc conduit ran on it with no xp conduit bodies. This came from the factory this way. Also the control box on the skid and some devices are not xp either. Is this legal? I was sent seal offs and xp switches, and recepts and lights for this room, but was sent cast iron tees for the conduit runs in the ceiling. I don't think this is right, but if they are getting away with it on the gas skid, it makes me wonder. Any explanations would be appreciated. Thanks.