Doc 255/24 – EIGA Cryogenic Gases Couplings for Tanker Filling

(Revision of Doc 909/20)

It is common practice for cryogenic transport tanks to be filled at many locations. These locations may be at their own or a competitor’s production site and in a number of different countries.

Most companies had equipped their transport tanks and filling stations with their own coupling systems. These systems were different, within the same company and in different countries. As a consequence, many adapters were in use to allow transport tanks from one company to fill at another site. These had to be made available at the filling stations and required a significant effort to control and use them safely.

The use of a standardised filling coupling system, by all cryogenic gas companies, on transport tanks and at filling stations has avoided the requirement to use adapters and has improved safety.

After the initial introduction of the EIGA coupling, some problems were identified by the European gas industry (see EIGA Training Package TP06) which was solved by increasing the length of the code ring and the wall thickness of the nut. The drawings included within this publication are the latest revision.