Small craft - Permanently installed petrol and diesel fuel tanks (ISO 21487:2012, including Amd 1:2014 and Amd 2:2015)

This International Standard establishes requirements for design and test of petrol and diesel fuel tanks for internal
combustion engines that are intended to be permanently installed in small craft of up to 24 m length of hull.
For installation requirements, ISO 10088 applies.

Kleine Wasserfahrzeuge - Fest eingebaute Ottokraftstoff- und Dieselkraftstofftanks (ISO 21487:2012, einschließlich Amd 1:2014 und Amd 2:2015)

Diese Internationale Norm legt Anforderungen an die Konstruktion und die Prüfung von fest eingebauten Ottokraftstoff- und Dieselkraftstofftanks für Verbrennungsmotoren auf kleinen Wasserfahrzeugen mit einer Rumpflänge bis 24 m fest.
Für Anforderungen an die Installation ist ISO 10088 anzuwenden.

Petits navires - Réservoirs à carburant à essence et diesel installés à demeure (ISO 21487:2012, y compris Amd 1:2014 et Amd 2:2015)

L'ISO 21487:2012 établit des exigences sur la conception et les essais des réservoirs à carburant essence et diesel pour les moteurs à combustion interne et destinés à être installés à demeure sur des bateaux d'une longueur de coque inférieure ou égale à 24 m.
L'ISO 10088 s'applique pour ce qui concerne les exigences d'installation.

Mala plovila - Trajno vgrajeni rezervoarji za bencinsko in dizelsko gorivo (ISO 21487:2012, vključno z dopolniloma A1:2014 in A2:2015)

Mednarodni standard določa zahteve za načrtovanje in preskušanje rezervoarjev za bencinsko in dizelsko gorivo za motorje z notranjim zgorevanjem, ki so namenjeni trajni vgradnji v mala plovila z dolžino trupa do 24 m. Zahteve glede namestitve so določene v standardu ISO 10088.

General Information

Status
Withdrawn
Public Enquiry End Date
14-Mar-2018
Publication Date
14-Oct-2018
Withdrawal Date
28-Mar-2023
Technical Committee
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
29-Mar-2023
Due Date
21-Apr-2023
Completion Date
29-Mar-2023

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 21487:2018
01-december-2018
1DGRPHãþD
SIST EN ISO 21487:2013
SIST EN ISO 21487:2013/A1:2015
SIST EN ISO 21487:2013/A2:2016
0DODSORYLOD7UDMQRYJUDMHQLUH]HUYRDUML]DEHQFLQVNRLQGL]HOVNRJRULYR ,62
YNOMXþQR]GRSROQLORPD$LQ$
Small craft - Permanently installed petrol and diesel fuel tanks (ISO 21487:2012,
including Amd 1:2014 and Amd 2:2015)
Kleine Wasserfahrzeuge - Fest eingebaute Ottokraftstoff- und Dieselkraftstofftanks (ISO
21487:2012, einschließlich Amd 1:2014 und Amd 2:2015)
Petits navires - Réservoirs à carburant à essence et diesel installés à demeure (ISO
21487:2012, y compris Amd 1:2014 et Amd 2:2015)
Ta slovenski standard je istoveten z: EN ISO 21487:2018
ICS:
47.020.20 Ladijski motorji Marine engines and
propulsion systems
47.080 ýROQL Small craft
SIST EN ISO 21487:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN ISO 21487:2018

---------------------- Page: 2 ----------------------

SIST EN ISO 21487:2018


EN ISO 21487
EUROPEAN STANDARD

NORME EUROPÉENNE

October 2018
EUROPÄISCHE NORM
ICS 47.080 Supersedes EN ISO 21487:2012
English Version

Small craft - Permanently installed petrol and diesel fuel
tanks (ISO 21487:2012, including Amd 1:2014 and Amd
2:2015)
Petits navires - Réservoirs à carburant à essence et Kleine Wasserfahrzeuge - Fest eingebaute
diesel installés à demeure (ISO 21487:2012, y compris Ottokraftstoff- und Dieselkraftstofftanks (ISO
Amd 1:2014 et Amd 2:2015) 21487:2012, einschließlich Amd 1:2014 und Amd
2:2015)
This European Standard was approved by CEN on 16 April 2018.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21487:2018 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------

SIST EN ISO 21487:2018
EN ISO 21487:2018 (E)
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

2

---------------------- Page: 4 ----------------------

SIST EN ISO 21487:2018
EN ISO 21487:2018(E)
European foreword
The text of ISO 21487:2012, including Amd 1:2014 and Amd 2:2015 has been prepared by Technical
Committee ISO/TC 188 “Small craft” of the International Organization for Standardization (ISO) and has
been taken over as EN ISO 21487:2018.
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 April 2019, and conflicting national standards shall be
withdrawn at the latest by April 2019.
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 21487:2012.
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 2013/53/EU.
For relationship with EU Directive 2013/53/EU, 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, Former Yugoslav Republic of Macedonia, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
the United Kingdom.
Endorsement notice
The text of ISO 21487:2012, including Amd 1:2014 and Amd 2:2015 has been approved by CEN as EN ISO
21487:2018 without any modification.
3

---------------------- Page: 5 ----------------------

SIST EN ISO 21487:2018
EN ISO 21487:2018 (E)
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 and Annex II of
Directive 2013/53/EU
Essential Requirements of Clause(s)/sub- Remarks/Notes
Directive 2013/53/EU clause(s) of this EN
Annex I, Part A, 5.2.2 – Fuel tanks 4, 5, 6, 7, 8 This standard deals with the design
and test of petrol and diesel fuel tanks
and tank openings only.
This standard does not deal with the
ventilation of fuel tank spaces;
protection against fire from the
engine and other sources of ignition
and heat or separation from living
quarters.

Annex II - Components of In respect of fuel tanks and their
watercraft; (4) - Fuel tanks intended 4, 5, 6, 7, 8 openings when placed on the Union
for fixed installations and fuel hoses. market separately.
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.

4

---------------------- Page: 6 ----------------------

SIST EN ISO 21487:2018
INTERNATIONAL ISO
STANDARD 21487
Second edition
2012-11-15
Small craft — Permanently installed
petrol and diesel fuel tanks
Petits navires — Réservoirs à carburant à essence et diesel installés à
demeure
Reference number
ISO 21487:2012(E)
©
ISO 2012

---------------------- Page: 7 ----------------------

SIST EN ISO 21487:2018
ISO 21487:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved

---------------------- Page: 8 ----------------------

SIST EN ISO 21487:2018
ISO 21487:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General properties . 2
4.1 Resistance to liquids in contact . 2
4.2 Copper-based alloys . 2
4.3 Provisions to tanks . 2
4.4 Installation of non-integral tanks . 3
5 Petrol fuel tanks: design and tests . 3
5.1 Design . 3
5.2 Tests to be performed . 3
6 Diesel fuel tanks: design and tests . 4
6.1 Design . 4
6.2 Tests to be performed . 4
7 Tests . 4
7.1 General . 4
7.2 Hydraulic pressure test . 4
7.3 Pressure-impulse type test for petrol fuel tanks . 6
7.4 General fire-resistance test of non-metallic fuel tanks . 6
7.5 As-installed fire-resistance test of non-metallic fuel tanks . 7
8 Marking . 8
© ISO 2012 – All rights reserved iii

---------------------- Page: 9 ----------------------

SIST EN ISO 21487:2018
ISO 21487:2012(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 21487 was prepared by Technical Committee ISO/TC 188, Small craft.
This second edition cancels and replaces the first edition (ISO 21487:2006), which has been technically revised.
It also incorporates the Technical Corrigendum ISO 21487:2006/Cor.1:2008. The main changes from the first
edition are the following:
— diesel tanks shall be equipped with inspection hatch(es) for cleaning and inspection (4.3.10);
— metallic tanks may be static pressure tested as an alternative to the pressure-impulse test (5.2.2);
— non-metallic, non-integral tanks, if installed in an engine compartment, shall be fire tested (6.2.3);
— non-metallic tanks shall be marked with the maximum temperature to which the tank may be exposed (Clause 8).
iv © ISO 2012 – All rights reserved

---------------------- Page: 10 ----------------------

SIST EN ISO 21487:2018
INTERNATIONAL STANDARD ISO 21487:2012(E)
Small craft — Permanently installed petrol and diesel fuel tanks
1 Scope
This International Standard establishes requirements for design and test of petrol and diesel fuel tanks for internal
combustion engines that are intended to be permanently installed in small craft of up to 24 m length of hull.
For installation requirements, ISO 10088 applies.
2 Normative references
The following referenced documents are indispensable for the application 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 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
ISO 10088, Small craft — Permanently installed fuel systems
ISO 11192, Small craft — Graphical symbols
ISO 12215-5, Small craft — Hull construction and scantlings — Part 5: Design pressures for monohulls, design
stresses, scantlings determination
ISO 12215-6, Small craft — Hull construction and scantlings — Part 6: Structural arrangements and details
ISO 5817, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) —
Quality levels for imperfections
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
petrol
hydrocarbon fuel or blend of hydrocarbon fuel and denatured ethanol which is liquid at atmospheric pressure
and is used in spark ignition engines
3.2
diesel
hydrocarbon fuel, biofuel or blend of these which is liquid at atmospheric pressure and is used in compression
ignition engines
3.3
spark ignition engine
engine in which an electrical spark is produced to ignite the fuel/air mixture
3.4
compression ignition engine
engine in which ignition is obtained by means of compressing the fuel/air mixture
3.5
permanently installed
securely fastened so that tools need to be used for removal
© ISO 2012 – All rights reserved 1

---------------------- Page: 11 ----------------------

SIST EN ISO 21487:2018
ISO 21487:2012(E)
3.6
integral tank
tank which forms part of the structure of the craft
4 General properties
4.1 Resistance to liquids in contact
4.1.1 All seals such as gaskets, o-rings and joint-rings shall be of non-wicking, i.e. non-fuel absorbent, material.
4.1.2 All materials used shall be resistant to deterioration by the fuel for which the system is designed and
to other liquids or compounds with which the material can come in contact as installed under normal operating
conditions, e.g. grease, lubricating oil, bilge solvents and sea water.
4.2 Copper-based alloys
Copper-based alloys for fittings are acceptable for direct coupling with all tank materials specified in Table 1,
except aluminium. Copper-based alloy fittings are allowed for aluminium tanks only if a galvanic barrier is
arranged between fitting and tank.
4.3 Provisions to tanks
4.3.1 There shall be provisions to determine the fuel level or quantity in the tank considering also the
requirements in 5.1.2 for petrol fuel tanks and 6.1.3 for diesel fuel tanks.
4.3.2 Metal tanks shall be designed or installed so that no exterior surface will trap water.
4.3.3 All rigid tubes and pipes which extend near the tank bottom shall have sufficient clearance to prevent
contact with the bottom during normal operation of the craft.
4.3.4 On metallic tanks, all metallic non-integral tank supports, chocks or hangers shall either be separated
from the surface of the tank by a non-metallic, non-hygroscopic, non-abrasive material or welded to the tank.
4.3.5 If baffles are provided, the total open area provided in the baffles shall be not greater than 30 % of the
tank cross section in the plane of the baffle.
4.3.6 Baffle openings shall be designed so that they do not prevent the fuel flow across the bottom or trap
vapour across the top of the tank.
4.3.7 The fuel fill pipe on the tank shall have a minimum inside diameter of 28,5 mm.
2
4.3.8 Each ventilation pipe on the tank shall have a minimum inside diameter of 11 mm (95 mm ) or a
ventilation opening designed to prevent the tank pressure from exceeding 80 % of the maximum test pressure
marked on the tank label when tested in accordance with ISO 10088.
4.3.9 Suitable metallic tank materials and minimum recommended material thicknesses required for
corrosion resistance are given in Table 1. Other materials may be used if they demonstrate equivalent fuel and
corrosion resistance.
4.3.10 Diesel tanks shall be equipped with inspection hatch(es) having a suitable diameter of at least 120 mm at
suitable position(s) for cleaning and inspection of the lowest part(s) of the tank. The hatch must remain accessible
when the tank has been installed in the craft. The hatch(es) may be located on the top or side of the tank.
2 © ISO 2012 – All rights reserved

---------------------- Page: 12 ----------------------

SIST EN ISO 21487:2018
ISO 21487:2012(E)
Table 1 — Metallic tank materials
Minimum nominal sheet
thickness for corrosion
Material Fuel
resistance
mm
Copper, internally tin-coated 1,5 Petrol only
Aluminium alloys containing no more than 0,1 % copper 2,0 Diesel and petrol
Stainless steel, with all welding deposits removed 1 Diesel and petrol
Mild steel 2 Diesel only
Mild steel externally hot-dip zinc-coated after fabrication 1,5 Diesel only
Mild steel externally and internally hot-dip zinc-coated after
1,5 Petrol only
fabrication
Aluminized steel 1,2 Diesel and petrol
4.4 Installation of non-integral tanks
4.4.1 Tank mechanical fixing
Non-integral tanks shall be installed so that the loads due to the mass of the full tank are safely introduced into
the structure, with due consideration given to upward and downward acceleration due to the craft’s movements at
maximum speed in the sea. In this respect, continuous flexible supports spreading loads are preferable to rigid ones.
Metal or textile hold-down straps are considered as a good practice provided that chafe and corrosion are kept
to a minimum.
4.4.2 Other installation requirements
For other installation requirements (filling, vent lines, fuel circuit, etc.), ISO 10088 applies.
5 Petrol fuel tanks: design and tests
5.1 Design
5.1.1 Petrol fuel tanks shall not be integral with the hull.
5.1.2 Petrol fuel tanks shall have all fittings and openings on top, except metallic fill and ventilation pipes,
which may be connected to the sides or ends of metal petrol fuel tanks, provided that they are welded to the
tank and reach above the top of the tank.
5.1.3 Tank drains are not permitted on petrol fuel tanks.
5.2 Tests to be performed
5.2.1 Petrol fuel tanks shall be leakage tested in accordance with 7.2.1
5.2.2 Petrol fuel tanks shall be pressure-im
...

SLOVENSKI STANDARD
oSIST prEN ISO 21487:2018
01-februar-2018
Mala plovila - Trajno vgrajeni rezervoarji za bencinsko in dizelsko gorivo (ISO
21487:2012)
Small craft - Permanently installed petrol and diesel fuel tanks (ISO 21487:2012)
Kleine Wasserfahrzeuge - Fest eingebaute Ottokraftstoff- und Dieselkraftstofftanks (ISO
21487:2012)
Petits navires - Réservoirs à carburant à essence et diesel installés à demeure (ISO
21487:2012)
Ta slovenski standard je istoveten z: prEN ISO 21487
ICS:
47.020.20 Ladijski motorji Marine engines and
propulsion systems
47.080 ýROQL Small craft
oSIST prEN ISO 21487:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 21487:2018

---------------------- Page: 2 ----------------------
oSIST prEN ISO 21487:2018


DRAFT
EUROPEAN STANDARD
prEN ISO 21487
NORME EUROPÉENNE

EUROPÄISCHE NORM

December 2017
ICS 47.080 Will supersede EN ISO 21487:2012
English Version

Small craft - Permanently installed petrol and diesel fuel
tanks (ISO 21487:2012)
Petits navires - Réservoirs à carburant à essence et Kleine Wasserfahrzeuge - Fest eingebaute
diesel installés à demeure (ISO 21487:2012) Ottokraftstoff- und Dieselkraftstofftanks (ISO
21487:2012)
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/SS T01.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN ISO 21487:2017 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
oSIST prEN ISO 21487:2018
prEN ISO 21487:2017 (E)
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

2

---------------------- Page: 4 ----------------------
oSIST prEN ISO 21487:2018
prEN ISO 21487:2017(E)
European foreword
The text of ISO 21487:2012 has been prepared by Technical Committee ISO/TC 188 “Small craft” of the
International Organization for Standardization (ISO) and has been taken over as prEN ISO 21487:2017.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN ISO 21487:2012.
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 2013/53/EU.
For relationship with EU Directive 2013/53/EU, see informative Annex ZA, which is an integral part of
this document.
Endorsement notice
The text of ISO 21487:2012 has been approved by CEN as prEN ISO 21487:2017 without any modification.

3

---------------------- Page: 5 ----------------------
oSIST prEN ISO 21487:2018
prEN ISO 21487:2017 (E)
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 and Annex II of
Directive 2013/53/EU
Essential Requirements of Clause(s)/sub-clause(s) of Remarks/Notes
Directive 2013/53/EU this EN
Annex I, Part A, 5.2.2 – Fuel tanks 4, 5, 6, 7, 8 This standard deals with the design
and test of petrol and diesel fuel
tanks and tank openings only.

This standard does not deal with
the ventilation of fuel tank spaces;
protection against fire from the
engine and other sources of
ignition and heat or separation
from living quarters.

Annex II - Components of In respect of fuel tanks and their
watercraft; (4) - Fuel tanks intended 4, 5, 6, 7, 8 openings when placed on the Union
for fixed installations and fuel hoses. market separately.

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.


4

---------------------- Page: 6 ----------------------
oSIST prEN ISO 21487:2018
INTERNATIONAL ISO
STANDARD 21487
Second edition
2012-11-15
Small craft — Permanently installed
petrol and diesel fuel tanks
Petits navires — Réservoirs à carburant à essence et diesel installés à
demeure
Reference number
ISO 21487:2012(E)
©
ISO 2012

---------------------- Page: 7 ----------------------
oSIST prEN ISO 21487:2018
ISO 21487:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved

---------------------- Page: 8 ----------------------
oSIST prEN ISO 21487:2018
ISO 21487:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General properties . 2
4.1 Resistance to liquids in contact . 2
4.2 Copper-based alloys . 2
4.3 Provisions to tanks . 2
4.4 Installation of non-integral tanks . 3
5 Petrol fuel tanks: design and tests . 3
5.1 Design . 3
5.2 Tests to be performed . 3
6 Diesel fuel tanks: design and tests . 4
6.1 Design . 4
6.2 Tests to be performed . 4
7 Tests . 4
7.1 General . 4
7.2 Hydraulic pressure test . 4
7.3 Pressure-impulse type test for petrol fuel tanks . 6
7.4 General fire-resistance test of non-metallic fuel tanks . 6
7.5 As-installed fire-resistance test of non-metallic fuel tanks . 7
8 Marking . 8
© ISO 2012 – All rights reserved iii

---------------------- Page: 9 ----------------------
oSIST prEN ISO 21487:2018
ISO 21487:2012(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 21487 was prepared by Technical Committee ISO/TC 188, Small craft.
This second edition cancels and replaces the first edition (ISO 21487:2006), which has been technically revised.
It also incorporates the Technical Corrigendum ISO 21487:2006/Cor.1:2008. The main changes from the first
edition are the following:
— diesel tanks shall be equipped with inspection hatch(es) for cleaning and inspection (4.3.10);
— metallic tanks may be static pressure tested as an alternative to the pressure-impulse test (5.2.2);
— non-metallic, non-integral tanks, if installed in an engine compartment, shall be fire tested (6.2.3);
— non-metallic tanks shall be marked with the maximum temperature to which the tank may be exposed (Clause 8).
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oSIST prEN ISO 21487:2018
INTERNATIONAL STANDARD ISO 21487:2012(E)
Small craft — Permanently installed petrol and diesel fuel tanks
1 Scope
This International Standard establishes requirements for design and test of petrol and diesel fuel tanks for internal
combustion engines that are intended to be permanently installed in small craft of up to 24 m length of hull.
For installation requirements, ISO 10088 applies.
2 Normative references
The following referenced documents are indispensable for the application 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 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
ISO 10088, Small craft — Permanently installed fuel systems
ISO 11192, Small craft — Graphical symbols
ISO 12215-5, Small craft — Hull construction and scantlings — Part 5: Design pressures for monohulls, design
stresses, scantlings determination
ISO 12215-6, Small craft — Hull construction and scantlings — Part 6: Structural arrangements and details
ISO 5817, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) —
Quality levels for imperfections
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
petrol
hydrocarbon fuel or blend of hydrocarbon fuel and denatured ethanol which is liquid at atmospheric pressure
and is used in spark ignition engines
3.2
diesel
hydrocarbon fuel, biofuel or blend of these which is liquid at atmospheric pressure and is used in compression
ignition engines
3.3
spark ignition engine
engine in which an electrical spark is produced to ignite the fuel/air mixture
3.4
compression ignition engine
engine in which ignition is obtained by means of compressing the fuel/air mixture
3.5
permanently installed
securely fastened so that tools need to be used for removal
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oSIST prEN ISO 21487:2018
ISO 21487:2012(E)
3.6
integral tank
tank which forms part of the structure of the craft
4 General properties
4.1 Resistance to liquids in contact
4.1.1 All seals such as gaskets, o-rings and joint-rings shall be of non-wicking, i.e. non-fuel absorbent, material.
4.1.2 All materials used shall be resistant to deterioration by the fuel for which the system is designed and
to other liquids or compounds with which the material can come in contact as installed under normal operating
conditions, e.g. gre
...

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