EN ISO 7840:2021

Small craft - Fire-resistant fuel hoses (ISO 7840:2021)

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 small craft.
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 8469:2021. Specifications for permanently installed fuel systems are given in ISO 10088:2013.

Kleine Wasserfahrzeuge - Feuerwiderstandsfähige Kraftstoffschläuche (ISO 7840:2021)

Dieses Dokument spezifiziert allgemeine Anforderungen und physikalischen Prüfungen für feuerwiderstandsfähige Schläuche für kleine Wasserfahrzeuge, durch die Benzin oder ein Benzin Ethanol Gemisch oder Diesel oder ein Diesel FAME Gemisch geleitet wird, die für Betriebsüberdrücke bis höchstens 0,34 MPa bei Schläuchen mit Innendurchmesser bis einschließlich 10 mm ausgelegt sind und mit Betriebsüberdrücken bis höchstens 0,25 MPa bei Schläuchen mit Innendurchmesser bis 63 mm ausgelegt sind.
Es gilt für Schläuche auf kleinen Wasserfahrzeugen mit fest eingebauten Kraftstoffsystemen. Es gilt nicht für Schläuche, die vollständig innerhalb des Spritzschutzes am Heck des Fahrzeugs liegen und direkt mit einem Außenbordmotor verbunden sind.
Festlegungen für nicht feuerwiderstandfähige Kraftstoffschläuche sind in ISO 8469:2021 angegeben. Festlegungen für fest eingebaute Kraftstoffsysteme sind in ISO 10088:2013 enthalten.

Petits navires - Tuyaux souples pour carburant résistants au feu (ISO 7840:2021)

Le présent document spécifie les exigences générales et les essais physiques relatifs aux tuyaux souples résistants au feu pour le transport d'essence ou d'essence mélangée avec de l'éthanol et de carburant diesel ou de carburant diesel mélangé avec des FAME/EMAG, conçus pour une pression de service n'excédant pas 0,34 MPa pour les tuyaux souples de diamètre intérieur égal ou inférieur à 10 mm, et 0,25 MPa pour les tuyaux souples de diamètre intérieur allant jusqu'à 63 mm, installés sur les petits navires.
Il s'applique aux tuyaux souples destinés aux petits navires dont le système à carburant est installé à demeure. Il ne s'applique pas aux tuyaux entièrement situés à l'intérieur du puits de moteur hors bord situé à l'arrière du bateau et directement reliés à un moteur hors-bord.
Les spécifications pour les tuyaux non-résistant au feu sont données dans l'ISO 8469:2021. Les spécifications pour les systèmes de carburant installés à demeure sont données dans l'ISO 10088:2013.

Mala plovila - Proti ognju odporne cevi za gorivo (ISO 7840:2021)

General Information

• Status: Published
• Publication Date: 16-Mar-2021
• Withdrawal Date: 29-Sep-2021
• ICS: 47.080 - Small craft
• Technical Committee: CEN/TC 464 - Small Craft
• Drafting Committee: CEN/TC 464 - Small Craft
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 17-Mar-2021
• Completion Date: 17-Mar-2021
• Directive: 2013/53/EU - Directive 2013/53/EU of the European Parliament and of the Council of 20 November 2013 on recreational craft and personal watercraft and repealing Directive 94/25/EC
• Mandate: M/542 - [C(2015)8736] Standardisation Request to the European Committee for Standardisation and the European Committee for Electro-technical Standardisation as regards recreational craft and personal watercraft in support of Directive 2013/53/EU of the European Parliament and of the Council of 20 November 2013 on recreational craft and personal watercraft and repealing Directive 94/25/EC.
• Ref Project: SIST EN ISO 7840:2021 - Small craft - Fire-resistant fuel hoses (ISO 7840:2021)

Relations

• Replaces: EN ISO 7840:2018 - Small craft - Fire-resistant fuel hoses (ISO 7840:2013)
• Effective Date: 28-Aug-2019

Overview

EN ISO 7840:2021 (ISO 7840:2021) specifies requirements and physical tests for fire‑resistant fuel hoses used in permanently installed fuel systems of small craft. The standard covers hoses for conveying petrol (including ethanol blends) and diesel (including FAME blends) and defines construction, performance and test methods to reduce the risk of fire and fuel leakage in recreational and other small watercraft up to 24 m hull length. It supersedes EN ISO 7840:2018 and provides a harmonized route to conformity with safety requirements of Directive 2013/53/EU where applicable.

Key topics and technical requirements

• Scope and limits
  • Applies to permanently installed fuel hoses (not hoses entirely within the stern splash well connected directly to outboard engines).
  • Working pressure limits: 0.34 MPa for hoses with inner diameter ≤ 10 mm; 0.25 MPa for hoses up to 63 mm inner diameter.
• Materials and construction
  • Hoses must have a non‑porous, smooth inner surface free from defects and chemical contaminants.
  • Tube (inner liner) and cover (outer jacket) defined for fuel contact and weather/ozone protection.
• Physical tests (finished hose)
  • Bursting pressure, vacuum‑collapse, volume change, mass reduction, cold‑flex, abrasion, dry heat resistance, oil resistance, adhesion.
  • Fire resistance test (Annex A - normative) to verify hose performance under fire exposure.
  • Fuel permeation requirements and test method (Annex B - normative), including provisions for low‑permeation hoses (newly emphasized).
  • Ozone resistance assessment.
• Marking and conformity
  • Marking requirements and reference to presumption of conformity with EU essential safety requirements when cited in the Official Journal.

Practical applications and users

• Who uses EN ISO 7840:2021:
  • Hose manufacturers for product design, testing and certification.
  • Boat builders and marine engineers specifying fuel system components.
  • Test laboratories performing the normative tests (fire, permeation, burst, etc.).
  • Regulatory authorities and certifiers assessing compliance with recreational craft directives.
  • Procurement/specification teams selecting compliant fire‑resistant fuel hoses.
• Practical value:
  • Ensures fuel hoses are safe for use with petrol/ethanol and diesel/FAME blends.
  • Reduces fire and vapor risks on small craft through validated fire‑resistance and permeation performance.
  • Supports regulatory compliance and consistent product quality.

Related standards

• ISO 8469:2021 - Non‑fire‑resistant fuel hoses.
• ISO 10088:2013 - Permanently installed fuel systems for small craft.
• Normative test references: ISO 1402, ISO 1817, ISO 7233, ISO 7326, and EN 14214 (FAME specification).

Keywords: EN ISO 7840:2021, fire-resistant fuel hoses, small craft fuel systems, fuel hose fire test, fuel permeation, FAME, petrol and diesel fuel hoses.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2021
Nadomešča:
SIST EN ISO 7840:2018
Mala plovila - Proti ognju odporne cevi za gorivo (ISO 7840:2021)
Small craft - Fire-resistant fuel hoses (ISO 7840:2021)
Kleine Wasserfahrzeuge - Feuerwiderstandsfähige Kraftstoffschläuche (ISO 7840:2021)
Petits navires - Tuyaux souples pour carburant résistants au feu (ISO 7840:2021)
Ta slovenski standard je istoveten z: EN ISO 7840:2021
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
47.020.30 Sistemi cevi Piping systems
47.080 Čolni Small craft
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 7840
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2021
EUROPÄISCHE NORM
ICS 47.080 Supersedes EN ISO 7840:2018
English Version
Small craft - Fire-resistant fuel hoses (ISO 7840:2021)
Petits navires - Tuyaux souples pour carburant Kleine Wasserfahrzeuge - Feuerwiderstandsfähige
résistants au feu (ISO 7840:2021) Kraftstoffschläuche (ISO 7840:2021)
This European Standard was approved by CEN on 2 January 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 7840:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2013/53/EU aimed to be covered . 4

European foreword
This document (EN ISO 7840:2021) has been prepared by Technical Committee ISO/TC 188 "Small
craft" in collaboration with Technical Committee CEN/TC 464 “Small Craft” the secretariat of which is
held by SIS.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by September 2021, and conflicting national standards
shall be withdrawn at the latest by September 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 7840:2018.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For the relationship with EU Directive(s) see informative Annex ZA, which is an integral part of this
document.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 7840:2021 has been approved by CEN as EN ISO 7840:2021 without any modification.
Annex ZA
(informative)
Relationship between this European Standard and the essential
requirements of Directive 2013/53/EU aimed to be covered
This European standard has been prepared under a Commission’s standardization request M/542
C(2015) 8736 final to provide one voluntary means of conforming to essential requirements of
Directive 2013/53/EU.
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZA.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding essential requirements
of that Directive and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and
Annex I & II of Directive 2013/53/EU

Essential Requirements of Clause(s)/sub-clause(s) Remarks/Notes
Directive 2013/53/EU of this EN
Fuel hose of the type manufactured to
Annex I, Part A, 5.2.1 – Fuel 4, 6 Annex A, Annex B
this standard may be used where the
System, General
filling, venting and fuel-supply
arrangements require fuel hose to be fire
resistant.
This standard may be used where the
Annex I, Part A, 5.6.1 - Fire 4, 6 Annex A, Annex B
installation of fire resistant fuel hose is
Protection, General
required to minimise the risk of fire and
explosion
In respect of fire-resistant fuel hoses that
Annex II – Components of 4, 6 Annex A, Annex B
are supplied as components only.
watercraft (4) - Fuel tanks
intended for fixed installations
and fuel hoses.
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this
European Standard is maintained in the list published in the Official Journal of the European
Union. Users of this standard should consult frequently the latest list published in the Official
Journal of the European Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the
scope of this standard.
INTERNATIONAL ISO
STANDARD 7840
Fifth edition
2021-02
Small craft — Fire-resistant fuel hoses
Petits navires — Tuyaux souples pour carburant résistants au feu
Reference number
ISO 7840:2021(E)
©
ISO 2021
ISO 7840:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

ISO 7840:2021(E)
Contents Page
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 . 3
6.1 General . 3
6.2 Test liquids. 3
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. 4
6.7 Fire resistance . 4
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 . 5
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 . 8
Bibliography .10
ISO 7840:2021(E)
Foreword
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
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
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
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 188, Small craft, in collaboration with
the European Committee for Standardization (CEN) Technical Committee CEN/TC 464, Small craft, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This fifth edition cancels and replaces the fourth edition (ISO 7840:2013), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— requirements for low permeation fuel hoses have been added in 6.9;
— the test fluids in 6.2 for petrol have been clarified;
— the test set-up in Figure B.1 has been revised to remove the vented capillary tube.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved

INTERNATIONAL STANDARD ISO 7840:2021(E)
Small craft — Fire-resistant fuel hoses
1 Scope
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 small craft.
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 e
...