ISO 12617-2015 (2016) PDF

Full title and description

Road vehicles — Liquefied natural gas (LNG) refuelling connector — 3,1 MPa connector. This International Standard specifies the design and basic requirements for LNG refuelling nozzles and receptacles (including protective caps) intended for road vehicles and standardized mating components.

Abstract

Specifies LNG refuelling nozzles and receptacles constructed entirely of new and unused parts and materials for road vehicles powered by LNG. The International Standard covers connectors (nozzle and receptacle with protective cap as applicable) intended for devices designed for a maximum working pressure of 3,4 MPa (34 bar) and having standardized mating components.

General information

• Status: Published (confirmed as current following systematic review in 2020).
• Publication date: 18 March 2015 (Corrected version — English: 15 January 2016).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 43.060.40 (Road vehicles — components and parts).
• Edition / version: Edition 1 (2015), corrected version 2016-01 (English).
• Number of pages: 14 (ISO publication page).

Key bibliographic and lifecycle details are recorded on the ISO publication entry and in national/adopted EN editions.

Scope

This standard applies to liquefied natural gas (LNG) refuelling connectors for road vehicles — specifically the nozzle and the vehicle-mounted receptacle (and its protective cap where applicable). It is limited to connectors intended for LNG vehicular fuel systems that use standardized mating components and that are designed for a maximum working pressure of 3,4 MPa (34 bar). It does not cover other pressures or non-vehicular LNG transfer systems.

Key topics and requirements

• Definitions and terminology for LNG refuelling connectors (nozzle, receptacle, protective cap).
• Dimensional and interface requirements to ensure interchangeability of mating components.
• Design/manufacturing requirements: materials (new, unused), mechanical integrity, sealing and protection features.
• Rated and maximum working pressure specification (design for up to 3,4 MPa / 34 bar; nominal connector class 3,1 MPa).
• Marking, identification and basic safety provisions for vehicle-mounted receptacles and nozzles.
• References to test and performance methods required for component verification and conformity (as indicated by national/adopted versions).

Typical use and users

Used by automotive OEMs, fuel-system and connector manufacturers, component designers, testing laboratories, certification bodies and operators of LNG refuelling equipment. Also referenced by standards committees, regulatory authorities and national standards bodies when adopting the ISO text as an EN or national standard.

Related standards

Commonly referenced standards and related series include other ISO/TC 22 standards on alternative fuel systems and specific fuel-system components (for example, companion standards on LNG fuel system components and CNG refuelling connectors). The ISO text has been adopted as EN/ISO national editions (EN ISO 12617:2017 and national adoptions). See national/adopted EN versions for harmonized text and cross-references.

Keywords

LNG, liquefied natural gas, refuelling connector, nozzle, receptacle, protective cap, 3.1 MPa connector, 3.4 MPa (34 bar) maximum working pressure, road vehicles, ISO 12617, fuel system components.

FAQ

Q: What is this standard?

A: ISO 12617:2015 is an International Standard that defines requirements for liquefied natural gas (LNG) refuelling connectors (nozzles and vehicle receptacles) for road vehicles.

Q: What does it cover?

A: It covers the physical connector interfaces, materials and basic design requirements for LNG refuelling nozzles and receptacles intended for vehicular use, limited to devices designed for a maximum working pressure of 3,4 MPa (34 bar) and standardized mating components.

Q: Who typically uses it?

A: Vehicle manufacturers, fuel-system component suppliers, testing/certification labs, infrastructure providers and national standards bodies that adopt or reference the ISO/EN text.

Q: Is it current or superseded?

A: The 2015 edition (with corrected English version published in January 2016) is published and was confirmed in ISO’s systematic review in 2020; national/adopted EN versions were published in 2017. The standard is recorded as current but listed for future revision activity by the responsible technical committee.

Q: Is it part of a series?

A: It is part of the body of ISO/TC 22 work on road-vehicle fuel system components and alternative fuels; related ISO and EN standards cover LNG/CNG fuel system components, refuelling connectors and test methods. Adopted EN versions bundle the ISO text into regional application documents.

Q: What are the key keywords?

A: LNG, refuelling connector, nozzle, receptacle, protective cap, 3.1 MPa, 3.4 MPa, road vehicles, ISO 12617.