BS EN ISO 7840:2018,Small craft – Fire-resistant fuel hoses.BS EN ISO 7840:2018 pdf download for free.
BS EN ISO 7840:2018 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 8469. Specifications for permanently installed fuel systems are given in ISO 10088.
ISO 3: 1973, Preferred numbers-Series of preferred numbers .
ISO 1307, Rubber and plastics hoses-Hose sizes, minimum and maximum inside diameters, and tolerances
on cut-to-length hose.
ISO 1402, Rubber and plastics hoses and hose assemblies-Hydrostatic testing.
3 General requirements
Hoses complying with this International Standard shall present a non-porous, smooth inner surface,
free from defects and chemical contaminants.
Hoses shall demonstrate suitability for marine use by complying with the requirements of the tests in
Clause 5. They shall be marked according to Clause 6.
Table 1 gives some of the inner diameters based on series R 10 of ISO 3: 1973. Tolerances shall conform
to ISO 1307 or the values given in Table l.