Which organization sets the requirements for gas cylinders?

Transport Canada is the organization responsible for setting the requirements for gas cylinders in Canada. It establishes regulations and safety standards to ensure the safe transport and handling of hazardous materials, including gaseous substances contained in cylinders. This includes guidelines on design, construction, testing, maintenance, and inspection of gas cylinders, which are vital for preventing accidents and ensuring public safety during the transportation and storage of gases.

The other organizations listed have different focuses. The Occupational Safety and Health Administration is primarily concerned with workplace safety and health regulations in the United States. The National Fire Protection Association develops codes and standards related to fire protection and prevention but does not specifically set regulations for gas cylinders. The Environmental Protection Agency focuses on environmental protection and regulation of pollutants, rather than the specifics of gas cylinder standards. Therefore, the regulations surrounding gas cylinders fall squarely under the jurisdiction of Transport Canada in this context.