Cylinder or container valves should also meet these requirements and should be fitted with removable protective caps. The Department of Transportation requires periodic pressure tests. Where appropriate lifting attachments have not been provided on the container, suitable cradles or platforms shall be used for lifting. SF 6 gas is supplied in pressurized cylinders, which like any gas cylinder are capable of being damaged or ruptured by careless handling. Cylinders should never be left standing without secure protection against failing or being knocked over.
Cylinders can develop accidental leaks.
They should thus not be stored in an unventilated area where escaping gas can cause SF 6 contamination build-up. SF 6 Gas Handling. SF 6 gas handling, in filling or retrieval from SF 6 -insulated apparatus, should only be done outdoors, or, if indoors, with ventilating equipment in operation. Personnel in the area should refrain from smoking. No exposed heaters, flames, or arc-producing equipment should be used in the area while the gas is being handled.