BS ISO 12614-8:2021 - Road Vehicles LNG Fuel System Components Excess Flow Valve

Introducing the BS ISO 12614-8:2021, a pivotal standard for the automotive industry, specifically designed for road vehicles utilizing Liquefied Natural Gas (LNG) as a fuel source. This standard focuses on the critical component known as the Excess Flow Valve, ensuring safety, reliability, and efficiency in LNG fuel systems.

Overview

The BS ISO 12614-8:2021 standard is an essential document for manufacturers, engineers, and safety inspectors involved in the design, production, and maintenance of LNG fuel systems in road vehicles. Released on June 9, 2021, this standard provides comprehensive guidelines and specifications for the excess flow valve, a crucial component that plays a vital role in preventing uncontrolled release of LNG in the event of a system breach.

Key Features

• Standard Number: BS ISO 12614-8:2021
• Pages: 12
• ISBN: 978 0 539 03644 2
• Status: Standard

Importance of the Excess Flow Valve

The excess flow valve is a safety device that automatically shuts off the flow of LNG in the event of a significant leak or rupture in the fuel system. This component is crucial for preventing potential hazards such as fires or explosions, ensuring the safety of both the vehicle occupants and the surrounding environment.

Benefits of Compliance

Adhering to the BS ISO 12614-8:2021 standard offers numerous benefits, including:

• Enhanced Safety: By following the guidelines set forth in this standard, manufacturers can significantly reduce the risk of accidents related to LNG fuel systems.
• Regulatory Compliance: Meeting the requirements of this standard ensures compliance with international safety regulations, facilitating smoother market entry and acceptance.
• Improved Reliability: The standard provides detailed specifications that help in designing robust and reliable excess flow valves, contributing to the overall durability of the LNG fuel system.
• Environmental Protection: By preventing uncontrolled LNG releases, the standard helps in minimizing environmental impact, supporting sustainable practices in the automotive industry.

Who Should Use This Standard?

This standard is indispensable for a wide range of professionals, including:

• Automotive Engineers: Engineers involved in the design and development of LNG fuel systems will find this standard invaluable for ensuring their designs meet safety and performance criteria.
• Manufacturers: Companies producing LNG fuel system components can use this standard to guide their production processes, ensuring their products meet international quality and safety standards.
• Safety Inspectors: Inspectors responsible for evaluating the safety of LNG fuel systems in road vehicles can rely on this standard to assess compliance and identify potential safety issues.

Conclusion

The BS ISO 12614-8:2021 standard is a critical resource for anyone involved in the LNG fuel system industry. By providing clear and detailed guidelines for the excess flow valve, this standard helps ensure the safety, reliability, and environmental sustainability of road vehicles powered by LNG. Whether you are an engineer, manufacturer, or safety inspector, this standard is an essential tool for achieving excellence in LNG fuel system design and implementation.

BS ISO 12614-8:2021

This standard BS ISO 12614-8:2021 Road vehicles. Liquefied natural gas (LNG) fuel system components is classified in these ICS categories:

• 43.060.40 Fuel systems

This document specifies tests and requirements for the excess flow valve, a liquefied natural gas fuel system component intended for use on the types of motor vehicles defined in ISO 3833. This document is applicable to vehicles using natural gas in accordance with ISO 15403-1 (mono-fuel, bi-fuel, or dual-fuel applications). It is not applicable to the following:

1. fuel containers;

2. stationary gas engines;

3. container mounting hardware;

4. electronic fuel management;

5. 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 bar ¹

). Other working pressures can be accommodated by adjusting the pressure by the appropriate factor (ratio). For example, a 2 MPa (20 bar) working pressure system will require pressures to be multiplied by 1,25.