oSIST prEN ISO 7840:2020

SLOVENSKI STANDARD
oSIST prEN ISO 7840:2020
01-junij-2020
Mala plovila - Proti ognju odporne cevi za gorivo (ISO/DIS 7840:2020)
Small craft - Fire-resistant fuel hoses (ISO/DIS 7840:2020)
Kleine Wasserfahrzeuge - Feuerwiderstandsfähige Kraftstoffschläuche (ISO/DIS
7840:2020)

Petits navires - Tuyaux souples pour carburant résistants au feu (ISO/DIS 7840:2020)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 General requirements ..................................................................................................................................................................................... 2

5 Hose inner diameter ......................................................................................................................................................................................... 2

6 Physical tests on finished hose .............................................................................................................................................................. 2

6.1 General ........................................................................................................................................................................................................... 2

6.2 Test liquids.................................................................................................................................................................................................. 2

6.3 Bursting pressure ................................................................................................................................................................................. 3

6.4 Vacuum-collapse test ......................................................................................................................................................................... 3

6.5 Volume change in test liquids..................................................................................................................................................... 3

6.6 Mass reduction of test hose.......................................................................................................................................................... 3

6.7 Fire resistance ......................................................................................................................................................................................... 3

6.8 Effect of ozone ......................................................................................................................................................................................... 4

6.9 Fuel permeation ..................................................................................................................................................................................... 4

6.10 Cold-flex test ............................................................................................................................................................................................. 4

6.11 Abrasion test — ...................................................................................................................................................................................... 4

6.12 Dry heat resistance .............................................................................................................................................................................. 4

6.13 Oil resistance test .................................................................................................................................................................................. 5

6.14 Adhesion test ............................................................................................................................................................................................ 5

7 Marking .......................................................................................................................................................................................................................... 5

Annex A (normative) Fire test ..................................................................................................................................................................................... 6

Annex B (normative) Fuel permeation test (or equivalent test method) ...................................................................... 8

Annex ZA (informative) Relationship between this European Standard and the essential

requirements of Directive 2013/53/EU aimed to be covered ............................................................................10

Bibliography .............................................................................................................................................................................................................................11

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

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described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

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This fifth edition cancels and replaces the fourth edition (ISO 7840:2013), which has been technically

Any feedback or questions on this document should be directed to the user’s national standards body. A

This document 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 inner diameter 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: 2013 Specifications for

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 1402:2009, Rubber and plastics hoses and hose assemblies — Hydrostatic testing

ISO 1817:2015, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids

ISO 7326:2016, Rubber and plastics hoses — Assessment of ozone resistance under static conditions

EN 14214:2012, + A2: 2019, Automotive fuels — Fatty acid methyl esters (FAME) for diesel engines —

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

esters of fatty acids. The physical characteristics of fatty acid esters are closer to those of fossil diesel

fuels than pure vegetable oils, but properties depend on the type of vegetable oil

Hoses complying with this International Standard shall present a non-porous, smooth inner surface,

Hoses shall demonstrate suitability for marine use by complying with the requirements of the tests in

Clause 6. Hoses intended to be used for both petrol and diesel fuels must be tested with both test fluids

separately in sections requiring preconditioning. They shall be marked according to Clause 7.

1) a mixture by volume of 90 % of liquid C specified in ISO 1817:2015, Table A.1, and 10 % by

1) a mixture by volume of 90 % liquid F specified in ISO 1817:2015 and 10 % by volume of Fatty.

Fill three hoses or sample lengths from hoses with the applicable test liquids as specified in 6.2, and

store them for 40 days in air at a temperature of 40 °C ± 2 °C. For type 15 fuel hose (see 6.9) the 40 day

Empty the liquid out and fill the hoses or sample lengths with cold water; subject them to hydrostatic

The bursting pressure shall be at least 1,4 MPa for hoses with an inner diameter of 10 mm or less and