Division RO-SQ 15.3 (amended)
United Kingdom
Carriage of light-gauge metal cylinders for use in hot-air balloons between the filling site and the launch/landing site (E3).
6.2.
Requirements for construction and testing of gas receptacles.
The Carriage of Dangerous Goods and Use of Transportable Pressure Equipment Regulations 2004: Regulation 5(15).
Allows carriage of non-ADR-compliant cylinders for the carriage of UN 1011, 1965 and 1978, subject to stringent aviation requirements.
Gas cylinders used for hot-air balloons are designed to be as lightweight as possible, which precludes their meeting the normal requirements for gas cylinders. The average balloon cylinder has a water capacity of 70 litres, and the largest does not exceed 90 litres. Not more than five cylinders are carried on the vehicle at any one time.