All wastes must be properly disposed of by you. Proper handling and storage of flammable liquids and compressed gases is required at all times. Chemicals that we use at this site, in substantial quantity, are helium, liquid nitrogen, and carbon dioxide. Helium, an asphyxiant, is used to launch the weather balloons. Helium cylinders are stored and used outside.
Liquid nitrogen is used to cool certain instruments.
It is a cryogenic material and its hazards are asphyxiation and burns. The main dewars are stored outside and small amounts of liquid nitrogen are taken inside the trailers in small dewars. Personnel are required to wear PPE, as outlined in the MSDS, when using liquid nitrogen. This site contains radio frequency, microwave and laser radiation. All are well contained, and appropriate engineering controls are in place to protect us.