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UF V (E3) 10/2020 Page 82/119
The valve of the gas cylinder always must be closed before screwing on or unscrewing the gas hose
WARNING
Risk of injury through sudden release of the stored pressure energy when opening
the cylinder valve of a not connected cylinder.
Injuries.
Close the gas cylinder valve before connecting or removing the gas hose.
Secure the pressurized gas cylinder against falling and other mechanical damage.
WARNING
Risk of injury through sudden release of the stored pressure energy when the valve
safety is torn off.
Injuries.
Secure gas cylinders against falling (chaining).
Transport gas cylinders with a cylinder cart.
General information for safe handling of pressurized CO
2
cylinder:
• Open the gas cylinder valve slowly to avoid pressure surges.
• Secure gas cylinders during storage and use against falling (chaining).
• Transport gas cylinders with a cylinder cart, do not carry, roll, or throw them.
• Always close the valve even with apparently empty cylinders; screw on the cap when not in
use. Return gas cylinders with the valve closed.
• Do not open gas cylinders by force. Mark them when damaged.
• Protect gas cylinders against fire, e.g. do not store together with flammable liquids.
• Observe relevant regulations for dealing with pressurized CO
2
cylinder.
Information for the operator concerning requirements and regulations for use of pressurized gas cylinders
in the laboratory (not exhaustive):
A storage of pressurized gas cylinder (stockholding, no connection for emptying, storing for later use or for
supply to others) in a laboratory without a storage cabinet is generally prohibited. The requirements for fire-
protected pressurized gas cylinder cabinets are described in DIN EN 14470-2:2006.
Provisioning (reserve cylinders connected to the points intended for emptying or provided for imminent
connection) and using (provisioning, operating, emptying) of pressurized gas cylinders may also take place
outside storage cabinets or storage rooms, provided that the safety requirements are met. This applies to
the operation of the CO
2
emergency cooling system.
• Observe all relevant regulations, in particular the requirements for provisioning / emptying the pressur-
ized gas cylinders given in the Technical Regulations TRBS 3145 / 725
• If there are more than 6 cylinders in the laboratory, they must be placed in cylinder cabinets, special
installation rooms or outdoors. After work (UF V turned off) store the cylinders in a safe storage location.
• Perform leakage tests
• Fire extinguishers must be available in order to protect the gas cylinders against heating in case of fire
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