BS EN ISO 7840:2018 pdf free
BS EN ISO 7840:2018 pdf free.Small craft – Fire-resistant fuel hoses
BS EN ISO 7840 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[1]. Specifications for permanently installed fuel systems are given in ISO 10088.
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 3:1973, Preferred numbers一Series of preferred numbers
ISO 1307, Rubber and plastics hoses一Hose sizes, minimum and maximum inside diameters, and tolerances on cut-to-length hoses
ISO 1402, Rubber and plastics hoses and hose assemblies一Hydrostatic testing
ISO 1817:2011 Rubber, vulcanized or thermoplastic一Determination of the ffect of liquids
ISO 7233:2006, Rubber and plastics hoses and hose assemblies一Determination of resistance to vacuum
ISO 7326:2006, Rubber and plastics hoses一Assessment of ozone resistance under static conditions
ISO 10088:-1), Small craft一Permanently installed fuel systems
EN 14214:2008+Amd.1:2009, Automotive fuels一Fatty acid methyl esters (FAME) for diesel engines一Requirements and test methods
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.
If the hose is made of a homogeneous compound (with or without reinforcement), the swelling shall not exceed 35 % by volume, as measured by displacement in water. For hose with an inner layer of fuel-resistant material and a cover of another material, mainly intended for weather and ozone resistance,the increase in volume shall not exceed 35 % for the tube and 120 % for the cover.BS EN ISO 7840 pdf free download.
