Energy Tax Prevention Act this bill would have amended several core components of the Clean Air Act (CAA). Title III of the CAA would have been amended to have the term “greenhouse gas” include: water vapor, carbon dioxide, methane, nitrous oxide, sulfur hexafluoride, hydrofluorocarbons, perfluorocarbons and any other substance subject to, or proposed to be subject to, regulation, action, or consideration under this Act to address climate change. The Act said that the Administrator of the EPA may take no action involving the consideration of greenhouse gases as pollutants or contributing factors to climate change. It also said that “[nothing] shall cause a greenhouse
Nitrous oxide Because nitrous oxide is minimally metabolised in humans (with a rate of 0.004%), it retains its potency when exhaled into the room by the patient, and can pose an intoxicating and prolonged exposure hazard to the clinic staff if the room is poorly ventilated. Where nitrous oxide is administered, a continuous-flow fresh-air ventilation system or scavenger system is used to prevent a waste-gas buildup. The National Institute for Occupational Safety and Health recommends that workers' exposure to nitrous oxide should be controlled during the administration of anaesthetic gas in medical, dental, and veterinary operators. It set a recommended exposure limit