Compressed Gas Cylinder Use Purpose and Requirements
Compressed gas cylinders are commonly used in laboratories, clinical environments, facilities, and operational settings and may contain gases that range from inert and non‑hazardous to flammable, toxic, corrosive, or asphyxiant. In addition to chemical hazards, compressed gases present significant physical hazards due to the high pressures contained within the cylinders. At UNE, compressed gases are used for academic and trades purposes. Pure gases and gas mixtures are used in research as reactants, carriers, and in lasers. Welding and refrigeration charging are typical industrial applications involving compressed gases.
To reduce the risk of injury, property damage, and environmental impact, UNE requires that compressed gas cylinders be stored, handled, transported, and used in accordance with established University policies and procedures, manufacturer specifications, and applicable regulatory standards. Proper management of compressed gas cylinders is a shared responsibility among Environmental Health and Safety (EHS), supervisors, and all individuals who work with or around compressed gases.
UNE’s compressed gas cylinder safety requirements are designed to support compliance with applicable federal and state regulations, align with the UNE Safety Manual, and promote consistent safe practices throughout the University. EHS provides oversight, guidance, training, and compliance support to ensure compressed gas cylinders are managed safely throughout their lifecycle — from delivery and storage to use and removal from service.
Requirements for Compressed Gas Cylinders
- Cylinders must be handled as high-energy sources. Always transport cylinders with the safety cap installed and use a cylinder cart. Do not roll them by hand along the floor or transport them on forklifts.
- Always store cylinders upright and secure them using an approved lock-down device.
- Always use the correct pressure regulator for the specific gas.
- Do not store cylinders or lecture bottles with the regulator in place. If the regulator fails, the entire contents of the cylinder may be discharged.
- CGA fittings differ for inert gases (e.g., He, Ar, N2), flammable gases (e.g., H2), and oxidizers (e.g., O2, N20).
- Compressed gas cylinders, which contain acutely toxic gases, must be stored in a designated area.
- All compressed gas cylinders must be clearly marked with the correct chemical name.
- All cylinders should be labeled to indicate if the container is full or empty.
Propane Cylinder Safety
- Do not breathe the gas.
- Keep cylinders away from heat or ignition sources. Keep readily ignitable material at least 10 feet away.
- Cylinder temperatures should not exceed 125 degrees Fahrenheit.
- Close the cylinder valve after each use and when empty.
- Secure cylinders to prevent them from falling.
- Store and use cylinders in an upright position.
- Connect regulators with a properly sized wrench; do not use pliers.
- Always turn the cylinder valve off after grill/heater burners have been shut off.
- Do not store cylinders indoors or in enclosed areas. Always store and use with adequate ventilation outside of buildings.
- Avoid transporting cylinders in enclosed vehicles.
- Keep cylinder valve outlets plugged when not connected for use.
- Propane is heavier than air. Choose storage and use locations carefully so that if a leak occurs, gas will not settle in a low-lying area.
- There is no storage distance required from buildings if a container is less than 125 pounds.
Information provided by the OSHA website (29 CFR 1910.110 Storage and handling of liquefied petroleum gas) and Maine Oxy ()