ISO 12614-17:2021
(Main)Road vehicles - Liquefied natural gas (LNG) fuel system components - Part 17: Natural gas detector
Road vehicles - Liquefied natural gas (LNG) fuel system components - Part 17: Natural gas detector
This document specifies tests and requirements for the natural gas detector, a liquefied natural gas fuel system component intended for use on the types of motor vehicles defined in ISO 3833. This document is not applicable to the following: a) fuel containers; b) stationary gas engines; c) container mounting hardware; d) electronic fuel management; e) refuelling receptacles. It is recognized that miscellaneous components not specifically covered herein can be examined to meet the criteria of this document and tested according to the appropriate functional tests. All references to pressure in this document are to be considered gauge pressures unless otherwise specified. This document is based upon a working pressure for natural gas as a fuel of 1,6 MPa [16 bar1]. Other working pressures can be accommodated by adjusting the pressure by the appropriate factor (ratio). For example, 2 MPa (20 bar) working pressure system will require pressures to be multiplied by 1,25. 1 1 bar = 0,1 Mpa = 105 Pa; 1 MPa = 1 N/mm2.
Véhicules routiers — Équipements pour véhicules utilisant le gaz naturel liquéfié (GNL) comme combustible — Partie 17: Détecteur de gaz naturel
General Information
- Status
- Published
- Publication Date
- 03-Jun-2021
- Technical Committee
- ISO/TC 22/SC 41 - Specific aspects for gaseous fuels
- Current Stage
- 6060 - International Standard published
- Start Date
- 04-Jun-2021
- Due Date
- 08-Jan-2022
- Completion Date
- 04-Jun-2021
Relations
- Effective Date
- 23-Apr-2020
Overview
ISO 12614-17:2021 is an international standard established by the International Organization for Standardization (ISO) that specifies the requirements and test methods for natural gas detectors used in liquefied natural gas (LNG) fuel system components on road vehicles. It focuses exclusively on the natural gas detector as part of LNG fuel systems for motor vehicles defined under ISO 3833, excluding components like fuel containers, stationary gas engines, and refuelling receptacles.
This standard ensures the safe detection of natural gas leaks, thereby enhancing vehicle safety and environmental protection. It is based on a working pressure of natural gas at 1.6 MPa (16 bar), with provisions to adjust for different system pressures.
Key Topics
Scope and Applicability
Covers natural gas detectors within LNG fuel system components for road vehicles; excludes specific parts such as electronic fuel management and container hardware. Emphasizes gauge pressure values.Marking Requirements
Components must be clearly marked with manufacturer information, model designation, working pressure range, serial number, and other relevant data such as fuel type and certification marks to enable traceability and proper installation.Construction and Assembly Guidelines
Requires compliance with general LNG fuel system standards ISO 12614-1 and ISO 12614-2. Specifies that the gas detector must link to vehicle dashboard warning systems and engine control units (ECU) for safety interventions such as fuel cut-off at predefined leak concentrations (10%, 20%, and 50% of lower explosion limit).Performance Testing
Mandates tests including insulation resistance (minimum 240 kΩ at 1000 V DC), minimum signalling voltage (≤8 V for 12 V systems, ≤16 V for 24 V systems), corrosion resistance, vibration resistance, and electrical overvoltages, among others.Safety Features
Details automatic shutdown protocols triggered by gas concentration levels, ensuring timely responses to prevent hazardous events.
Applications
ISO 12614-17:2021 is essential for manufacturers, safety engineers, and regulatory bodies involved in:
- Designing and producing natural gas detectors integrated within LNG-fueled road vehicles, including buses, trucks, and specialized machinery.
- Implementing reliable gas leak detection systems to enhance operational safety and comply with international safety regulations.
- Vehicle safety system integration, combining gas detection with electronic control systems to manage fuel delivery and prevent accidents.
- Maintenance and inspection procedures ensuring gas detectors meet performance and safety standards throughout service life.
By conforming to this standard, stakeholders can effectively minimize risks associated with LNG fuel leakage, support environmental sustainability, and promote the safe adoption of LNG-powered transportation.
Related Standards
- ISO 12614-1: General requirements and definitions for LNG fuel system components
- ISO 12614-2: Performance and general test methods for LNG fuel system components
- ISO 3833: Defines types of motor vehicles-terms and definitions relevant for LNG system application
- Additional ISO and IEC standards governing road vehicle safety, electrical testing, and gaseous fuel components may complement ISO 12614-17 requirements.
Keywords: ISO 12614-17, natural gas detector, LNG fuel system, road vehicles, liquefied natural gas, gas leak detection, vehicle safety, methane detection, fuel system components, ISO standards, explosion limit, electrical testing, gas sensor, LNG vehicle safety
Frequently Asked Questions
ISO 12614-17:2021 is a standard published by the International Organization for Standardization (ISO). Its full title is "Road vehicles - Liquefied natural gas (LNG) fuel system components - Part 17: Natural gas detector". This standard covers: This document specifies tests and requirements for the natural gas detector, a liquefied natural gas fuel system component intended for use on the types of motor vehicles defined in ISO 3833. This document is not applicable to the following: a) fuel containers; b) stationary gas engines; c) container mounting hardware; d) electronic fuel management; e) refuelling receptacles. It is recognized that miscellaneous components not specifically covered herein can be examined to meet the criteria of this document and tested according to the appropriate functional tests. All references to pressure in this document are to be considered gauge pressures unless otherwise specified. This document is based upon a working pressure for natural gas as a fuel of 1,6 MPa [16 bar1]. Other working pressures can be accommodated by adjusting the pressure by the appropriate factor (ratio). For example, 2 MPa (20 bar) working pressure system will require pressures to be multiplied by 1,25. 1 1 bar = 0,1 Mpa = 105 Pa; 1 MPa = 1 N/mm2.
This document specifies tests and requirements for the natural gas detector, a liquefied natural gas fuel system component intended for use on the types of motor vehicles defined in ISO 3833. This document is not applicable to the following: a) fuel containers; b) stationary gas engines; c) container mounting hardware; d) electronic fuel management; e) refuelling receptacles. It is recognized that miscellaneous components not specifically covered herein can be examined to meet the criteria of this document and tested according to the appropriate functional tests. All references to pressure in this document are to be considered gauge pressures unless otherwise specified. This document is based upon a working pressure for natural gas as a fuel of 1,6 MPa [16 bar1]. Other working pressures can be accommodated by adjusting the pressure by the appropriate factor (ratio). For example, 2 MPa (20 bar) working pressure system will require pressures to be multiplied by 1,25. 1 1 bar = 0,1 Mpa = 105 Pa; 1 MPa = 1 N/mm2.
ISO 12614-17:2021 is classified under the following ICS (International Classification for Standards) categories: 43.060.40 - Fuel systems. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 12614-17:2021 has the following relationships with other standards: It is inter standard links to ISO 12614-17:2014. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ISO 12614-17:2021 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 12614-17
Second edition
2021-06
Road vehicles — Liquefied natural gas
(LNG) fuel system components —
Part 17:
Natural gas detector
Véhicules routiers — Équipements pour véhicules utilisant le gaz
naturel liquéfié (GNL) comme combustible —
Partie 17: Détecteur de gaz naturel
Reference number
©
ISO 2021
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Marking . 2
5 Construction and assembly . 2
6 Test . 2
6.1 Applicability . 2
6.2 Insulation resistance . 3
6.3 Minimum signalling voltage . 3
Bibliography . 4
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 41,
Specific aspects of gaseous fuels.
This second edition cancels and replaces the first edition (ISO 12614-17:2014), which has been
technically revised.
The main changes compared to the previous edition are as follows:
— editorial chan
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...