ISO 7840 Small craft—Fire-resistant fuel hoses – Standard
GB/T 14652.1 Small craft—Fire-resistant fuel hoses
ISO 7840 Small craft—Fire-resistant fuel hoses – Scope
This International Standard specifies general requirements and physical tests for fire-resistant hoses for conveying petrol or petrol blended with ethanol and diesel fuel or diesel fuel blended with FAME, designed for a working pressure not exceeding 0,34 MPa for hoses with nominal bore up to and including 10 mm and 0.25 MPa for hoses up to 63 mm inner diameter in craft of hull length up to 24 m.
It applies to hoses for small craft with permanently installed fuel systems. It does not apply to hoses entirely within the splash well at the stern of the craft connected directly to an outboard engine.
Specifications for non-fire-resistant fuel hoses are given in ISO 84691.Specifications for permanently installed fuel systems are given in ISO 10088.
ISO 7840 Small craft—Fire-resistant fuel hoses – Principle
The hose filled with heptane is subjected to fire. The hose shall withstand the test for 2.5 min without leakage after ignition of the fuel in the tray.
ISO 7840 Small craft—Fire-resistant fuel hoses – Sampling
At least three hose samples shall be tested in turn.
ISO 7840 Small craft—Fire-resistant fuel hoses – Reference standards
ISO 1307 Hose sizes, minimum and maximum inside diameters, and tolerances on cut-to-length hoses
ISO 1402 Rubber and plastics hoses and hose assemblies - Hydrostatic testing
ISO 1817 Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
ISO 7233 Rubber and plastics hoses and hose assemblies - Determination of resistance to vacuum
ISO 7326 Rubber and plastics hoses - Assessment of ozone resistance under static conditions
ISO 10088 Small craft一Permanently installed fuel systems