What is BS EN ISO 7840:2014?

BS EN ISO 7840:2014 is a technical standard that sets out the requirements for fire-resistant fuel hoses in marine applications. It outlines the specifications and testing methods to ensure the safety and performance of such hoses.

Scope and Application

The standard applies to fuel hoses used in pleasure craft and other small vessels, including boats, yachts, and personal watercraft. It specifies the characteristics of the hoses, such as their construction, materials, and dimensions. Additionally, it establishes the minimum requirements for flame resistance, permeability, burst pressure, and electrical conductivity.

Manufacturers and suppliers in the marine industry must comply with this standard to ensure their products are safe and reliable. Compliance with BS EN ISO 7840:2014 helps ensure that fuel hoses can withstand the harsh marine environment and reduce the risk of fire-related incidents.

Testing and Requirements

The standard defines various tests to evaluate the performance of fuel hoses. These tests include flame resistance test, permeation test, pressure test, and electrical conductivity test.

The flame resistance test assesses the ability of the hose to resist the spread of fire and self-extinguish once the ignition source is removed. It involves subjecting the hose to a flame for a specific duration while monitoring parameters such as flame propagation and burning time.

The permeation test determines the amount of fuel vapor that can pass through the hose. This ensures the hose does not allow excessive fuel leakage, which could increase the risk of fire or pose environmental hazards.

The pressure test examines the hose's ability to withstand high pressures without bursting or leaking. The hose is subjected to elevated pressure levels for a specified period, and any signs of leakage or failure result in non-compliance with the standard.

The electrical conductivity test ensures that the hose can dissipate static electricity and prevent the buildup of charges that could potentially ignite fuel vapors. This is particularly crucial in marine environments where flammable gases may be present.

Conclusion

BS EN ISO 7840:2014 is an important standard for fuel hoses used in marine applications. It guarantees the safety and reliability of these hoses by outlining specific requirements and conducting rigorous testing procedures. Compliance with this standard helps protect lives and reduces the risk of fire incidents on pleasure craft and other small vessels. Manufacturers and suppliers in the marine industry should ensure their products adhere to BS EN ISO 7840:2014 to promote safety and instill confidence among end-users.