CGA P-49 (R2020) PDF

The primary objective of this publication is to recommend practical methods for preventing road vehicles being moved away while still connected to fixed equipment. It supports compliance with the relevant requirements of existing regulations and standards.

This publication is also applicable to vehicles carrying cryogenic receptacles that are filled or emptied into a fixed installation while on board the vehicle.

Prevention of tow-away incidents of rail transportation is not discussed in this publication. However, the principles discussed may be appropriate in some cases.

This publication also covers breakaway couplings, which minimize the consequences of tow-aways, should they occur. These devices may be considered for use for transfilling from both road vehicles and rail wagons.