EN ISO 21593:2019

Ship and marine technology - Technical requirements for dry-disconnect/connect couplings for bunkering liquefied natural gas (ISO 21593:2019)

Publication date:   Dec 16, 2019

General information

60.60 Standard published   Sep 4, 2019


CEN/TC 282 Installation and equipment for LNG

European Norm

47.020.99   Other standards related to shipbuilding and marine structures



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This document specifies the design, minimum safety, functional and marking requirements, as well as the interface types and dimensions and testing procedures for dry-disconnect/connect couplings for LNG hose bunkering systems intended for use on LNG bunkering ships, tank trucks and shore-based facilities and other bunkering infrastructures. It is not applicable to hydraulically operated quick connect/disconnect couplers (QCDC) used for hard loading arms, which is covered in ISO 16904.
Based on the technology used in industrial manufacturing at the time of development of this document, it is applicable to sizes of couplings ranging from DN 25 to DN 200.

Related legislation

Legislation related to this standard


Directive 2014/94/EU of The European Parliament and of The Council of 22 October 2014 on the deployment of alternative fuels infrastructure

Life cycle


EN ISO 21593:2019
60.60 Standard published
Sep 4, 2019