Name: oSIST prEN ISO 21487:2021
Brand: SIST
SKU: 44ccba50-cafb-437c-a76f-b84eca72dc55
Price: 76.78 USD
Availability: InStock
Rating: 5 (6 reviews)

Small craft - Permanently installed petrol and diesel fuel tanks (ISO/DIS 21487:2021)

Kleine Wasserfahrzeuge - Fest eingebaute Ottokraftstoff- und Dieselkraftstofftanks (ISO/DIS 21487:2021)

Dieses Dokument legt Anforderungen an die Konstruktion, die Bauweise, die Installation und die Prüfung von fest eingebauten Ottokraftstoff- und Dieselkraftstofftanks für Verbrennungsmotoren auf kleinen Wasserfahrzeugen fest.
Für Anforderungen an die Installation ist ISO 10088:2013 anzuwenden.

Petits navires - Réservoirs à carburant à essence et diesel installés à demeure (ISO/DIS 21487:2021)

Mala plovila - Trajno vgrajeni rezervoarji za bencinsko in dizelsko gorivo (ISO/DIS 21487:2021)

General Information

Status

Not Published

Public Enquiry End Date

28-Jul-2021

ICS

47.020.20 - Marine engines and propulsion systems

47.080 - Small craft

Technical Committee

I13 - Imaginarni 13

Current Stage

4020 - Public enquire (PE) (Adopted Project)

Start Date

10-Jun-2021

Due Date

28-Oct-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

prEN ISO 21487 - Small craft - Permanently installed petrol and diesel fuel tanks (ISO/DIS 21487:2021)

RELATIONS

Revised

SIST EN ISO 21487:2013 - Small craft - Permanently installed petrol and diesel fuel tanks (ISO 21487:2012)

Effective Date

01-Aug-2018

Buy Standard

Draft

oSIST prEN ISO 21487:2021

English language

22 pages

sale 10% off

Preview

sale 10% off

Preview

e-Library read for

1 day

Draft

oSIST prEN ISO 21487:2020

English language

19 pages

sale 10% off

Preview

sale 10% off

Preview

e-Library read for

1 day

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN ISO 21487:2021
01-julij-2021

Mala plovila - Trajno vgrajeni rezervoarji za bencinsko in dizelsko gorivo (ISO/DIS

21487:2021)

Small craft - Permanently installed petrol and diesel fuel tanks (ISO/DIS 21487:2021)

Kleine Wasserfahrzeuge - Fest eingebaute Ottokraftstoff- und Dieselkraftstofftanks

(ISO/DIS 21487:2021)

Petits navires - Réservoirs à carburant à essence et diesel installés à demeure (ISO/DIS

21487:2021)
Ta slovenski standard je istoveten z: prEN ISO 21487
ICS:
47.020.20 Ladijski motorji Marine engines and
propulsion systems
47.080 Čolni Small craft
oSIST prEN ISO 21487:2021 en,fr,de

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

---------------------- Page: 1 ----------------------
oSIST prEN ISO 21487:2021
---------------------- Page: 2 ----------------------
oSIST prEN ISO 21487:2021
DRAFT INTERNATIONAL STANDARD
ISO/DIS 21487.2
ISO/TC 188 Secretariat: SIS
Voting begins on: Voting terminates on:
2021-06-03 2021-07-29
Small craft — Permanently installed petrol and diesel fuel
tanks
Petits navires — Réservoirs à carburant à essence et diesel installés à demeure
ICS: 47.080
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 21487.2:2021(E)
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. ISO 2021
---------------------- Page: 3 ----------------------
oSIST prEN ISO 21487:2021
ISO/DIS 21487.2:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

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: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 21487:2021
ISO/DIS 21487.2:2021(E)
Contents Page

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

Introduction ..................................................................................................................................................................................................................................v

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 tanks ............................................................................................................................................................................ 3

4.4.1 Non-integral tank mechanical fixing .................. ............................................................................................. 3

4.4.2 Other installation requirements ......................................................................................................................... 3

5 Petrol fuel tanks: design, and type tests ...................................................................................................................................... 3

5.1 Design ............................................................................................................................................................................................................. 3

5.2 Tests to be performed ....................................................................................................................................................................... 4

6 Diesel fuel tanks: design, and type tests ...................................................................................................................................... 4

6.1 Design ............................................................................................................................................................................................................. 4

6.2 Tests to be performed ....................................................................................................................................................................... 4

7 Type tests ..................................................................................................................................................................................................................... 5

7.1 General ........................................................................................................................................................................................................... 5

7.2 Hydraulic pressure tests ................................................................................................................................................................. 5

7.2.1 Leakage test ...................................................................... .................................................................................................... 5

7.2.2 Hydraulic pressure/strength type test ......................................................................................................... 6

7.3 Pressure-impulse type test for petrol fuel tanks ....................................................................................................... 7

7.4 General fire-resistance test for non-metallic fuel tanks ...................................................................................... 7

7.5 Fire-resistance test for non-metallic fuel tanks as installed .........................................................................10

8 Marking .......................................................................................................................................................................................................................11

Annex A (informative) Permeation testing of non-metallic fuel tanks ..........................................................................12

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

requirements of Directive 2013/53/EU aimed to be covered ............................................................................16

Bibliography .............................................................................................................................................................................................................................17

© ISO 2021 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST prEN ISO 21487:2021
ISO/DIS 21487.2:2021(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. Forecast

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 fourth edition cancels and replaces the third edition (ISO 21487:2012) and its Amendments

(ISO 21487:2012/Amd 1:2014 and ISO 21487:2012/Amd 2:2015), which have been technically revised.

The main changes compared to the previous amended edition are as follows:

— added Annex A, specifying a permeation test to determine the evaporative emissions from non-

metallic tanks.

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
---------------------- Page: 6 ----------------------
oSIST prEN ISO 21487:2021
ISO/DIS 21487.2:2021(E)
Introduction

This document specifies the requirements for the design, materials, installation and testing of

permanently installed fuel tanks for small craft.

Some countries have environmental controls for evaporative emissions from petrol fuel systems and

this document includes an informative Annex A describing limits and test procedures for the control of

evaporative emissions from permanently installed petrol fuel tanks. The details in Annex A allow for

future standardization and application of evaporative emissions on small craft.

As the international community further restricts fuel system emissions, it is anticipated that Annex A

will have increased global acceptance.
© ISO 2021 – All rights reserved v
---------------------- Page: 7 ----------------------
oSIST prEN ISO 21487:2021
---------------------- Page: 8 ----------------------
oSIST prEN ISO 21487:2021
DRAFT INTERNATIONAL STANDARD ISO/DIS 21487.2:2021(E)
Small craft — Permanently installed petrol and diesel fuel
tanks
1 Scope

This document specifies requirements for the design,, installation and testing of petrol and diesel fuel

tanks for internal combustion engines, that are intended to be permanently installed in small craft.

2 Normative references

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 10088:2013, Small craft — Permanently installed fuel systems

ISO 12215-5:2019, Small craft — Hull construction and scantlings — Part 5: Design pressures for monohulls,

design stresses, scantlings determination

ISO 12215-6:2008, Small craft — Hull construction and scantlings — Part 6: Structural arrangements and

details
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

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

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
petrol

hydrocarbon fuel, or blend of hydrocarbon fuel and denatured ethanol, that is liquid at atmospheric

pressure and is used in spark ignition engines (3.3)
3.2
diesel

hydrocarbon fuel, biofuel, or blend of these, that is liquid at atmospheric pressure and is used in

compression ignition engines (3.4)
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 by bolts, brackets, screws, paint, adhesive, welding, or other means so that it cannot

be unattached without the use of tools or chemicals, or if intended at all
© ISO 2021 – All rights reserved 1
---------------------- Page: 9 ----------------------
oSIST prEN ISO 21487:2021
ISO/DIS 21487.2:2021(E)
3.6
integral tank

tank that forms part of the outer hull envelope, so that at least one boundary of the tank is formed by

the hull

Note 1 to entry: Structural components, such as bulkheads, are not part of the hull.

3.7
tank range

fuel tanks that are characterized by the following attributes: general geometric shape, material, and

wall thickness
3.8
craft
small craft

recreational boat, and other watercraft using similar equipment, of up to 24 m length of hull (L )

Note 1 to entry: The measurement methodology for length of hull is defined in ISO 8666.

[SOURCE: ISO 8666:2020, 3.15, modified – Note 1 to entry has been added]
3.9
non-integral tank

fuel tank that is a component that does not rely on any portion of the craft to retain fuel

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 alloy fittings are not permitted on aluminium alloy fuel tanks unless a galvanic barrier is

arranged between the fitting and the tank.
4.3 Provisions to tanks

4.3.1 There shall be provisions to determine the fuel level or quantity in the tank, considering the

requirements in 5.1.2 for petrol fuel tanks and in 6.1.5 for diesel fuel tanks.

4.3.2 Metal tanks shall be designed and installed so that no exterior surface traps water.

4.3.3 All rigid tubes and pipes which extend near the tank bottom shall have sufficient clearance to

prevent contact between the tube and the bottom of the tank 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.
2 © ISO 2021 – All rights reserved
---------------------- Page: 10 ----------------------
oSIST prEN ISO 21487:2021
ISO/DIS 21487.2:2021(E)

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 trap vapour across the top of the tank and

shall not prevent the fuel flow across the bottom of the tank.

4.3.7 The fuel fill pipe on the tank shall have a minimum inside diameter of 28,5 mm.

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 10088:20132021.

4.3.9 Tanks shall be constructed using suitable metallic materials and shall meet the minimum material

thicknesses required for corrosion resistance as listed in Table 1.

NOTE Other materials are permitted if the tank manufacturer can demonstrate equivalent fuel and

corrosion resistance.
Table 1 — Metallic tank materials
Minimum nominal
sheet thickness for
Material Fuel
corrosion resistance
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 tanks
4.4.1 Non-integral tank mechanical fixing

Non-integral tanks shall be installed so that the loads due to the mass of the tank when filled to its

maximum capacity are safely distributed into the structure, with due consideration given to upward

and downward acceleration due to the craft's movements at maximum speed.

Note: 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

All other installation requirements (e.g. filling, vent lines, fuel circuit,) shall be in accordance with

ISO 10088:2013.
5 Petrol fuel tanks: design, and type tests
5.1 Design
5.1.1 Petrol fuel tanks shall not be integral with the hull.
© ISO 2021 – All rights reserved 3
---------------------- Page: 11 ----------------------
oSIST prEN ISO 21487:2021
ISO/DIS 21487.2:2021(E)

5.1.2 Petrol fuel tanks shall have all fittings and openings on top, except non-metallic integrally

moulded or welded metallic fill and ventilation pipes, which may be connected to the sides or ends of

petrol fuel tanks, provided that they are welded to the tank and reach above the top of the tank.

5.1.3 Tank drains shall not be fitted on petrol fuel tanks.
5.2 Tests to be performed
5.2.1 Petrol fuel tanks shall be leakage tested in accordance with Table 2.

5.2.2 Petrol fuel tanks shall be pressure-impulse tested in accordance with Table 2.

5.2.3 Non-metallic petrol fuel tanks shall be fire tested according to Table 2.
6 Diesel fuel tanks: design, and type tests
6.1 Design

6.1.1 Diesel fuel tanks may be a non-integral tank, or integral with the structure of the craft. If an

integral tank is installed in a cored hull construction, the core shall not deteriorate from exposure to

diesel fuel, and to commonly used additives, and shall not permit fuel to migrate.

6.1.2 Diesel fuel integral tanks shall be built in accordance with ISO 12215-5:2019.

NOTE National standards and classification rules can be applied to prove structural integrity and welding

quality.

6.1.3 If fittings in the bottom, sides or ends are installed, each connection shall have a shut-off valve

directly connected to the tank. The valve shall be protected or located to prevent physical damage, or be

of at least 25 mm nominal diameter.

6.1.4 Diesel fuel tank drains, where fitted, shall have a shut-off valve with a plug fitted in the outlet that

is permanently installed, or the handle of the drain shut-off valve shall be removable with the valve in its

closed position.

6.1.5 Sight gauges, if used, shall be fitted with valves at the top and bottom connections to the tank.

The bottom valve shall be a manually operated self-closing valve that can only be in the open position

while attended.

6.1.6 Diesel fuel tanks shall be equipped with inspection hatch(es) having a suitable diameter of at

least 120 mm at suitable position(s) for cleaning and for the inspection of the lowest part(s) of the tank.

The hatch shall remain accessible without the removal of permanent structures when the tank has been

installed in the craft. The hatch(es) may be located on the top or side of the tank.

6.2 Tests to be performed
6.2.1 Diesel fuel tanks shall be leakage tested in accordance with Table 2.
6.2.2 Diesel fuel tanks shall be pressure tested in accordance with Table 2.
4 © ISO 2021 – All rights reserved
---------------------- Page: 12 ----------------------
oSIST prEN ISO 21487:2021
ISO/DIS 21487.2:2021(E)

6.2.3 Non-metallic non integral diesel fuel tanks installed in an engine compartment shall pass the fire

tests:

a) in accordance with 7.4 where the actual installation conditions are not known; or

b) in accordance with 7.5 in craft specific installations using a specific tank design.

7 Type tests
7.1 General

Fuel tanks shall be subjected to the tests described Table 2 The tank to be tested shall be a complete

assembly (excluding sight gauges that are protected by a self-closing valve) and include the fuel pick-up

tube, fuel fill pipe, and fuel gauge/sender specified for the fuel tank.
Table 2 — Tank tests to be performed
Tank Type Leakage test Hydraulic Pres- Impulse test Fire Test
sure/ strength test
Petrol tanks
Petrol metal 7.2.1 7.2.2.1 for 5 min 7.3 NA
7.2.2.2 for 5 min
Petrol fibre-rein- 7.2.1 7.2.2.1 for 5 min 7.3 7.4 or 7.5
forced
Petrol thermoplastic 7.2.1 7.2.2.3 for 5 h 7.3 7.4 or 7.5
low density
Petrol thermoplastic 7.2.1 7.2.2.3 for 60 min 7.3 7.4 or 7.5
high density
Diesel tanks
Diesel metal 7.2.1 7.2.2.1 for 5 min NA NA
Diesel thermoplastic 7.2.1 7.2.2.3 for 5 h NA 6.2.3
low density
Diesel thermoplastic 7.2.1 7.2.2.3 for 60 min NA 6.2.3
high density
Diesel fibre-rein- 7.2.1 7.2.2.1 for 5 min NA 6.2.3
forced
Non-Integral
Diesel fibre-rein- 7.2.1 7.2.2.1 for 5 min NA NA
forced Integral
NOTE NA is not applicable.
7.2 Hydraulic pressure tests
WARNING — Take care not to exceed the maximum static test pressure.
7.2.1 Leakage test

Each fuel tank shall be internally tested with a hydraulic pressure. The test pressure shall be the greater

of:
a) 20 kPa; or

b) 1,5 times the highest hydrostatic pressure to which the tank may be subjected in service (maximum

fill-up height above tank top); or
© ISO 2021 – All rights reserved 5
---------------------- Page: 13 ----------------------
oSIST prEN ISO 21487:2021
ISO/DIS 21487.2:2021(E)

c) 1- to 1/2 times the maximum hydrostatic head at the designed tank fill level plus the system relief

pressure if the tank is to be used in a sealed fuel system.

The static test pressure shall be applied for 5 minutes without pressure drop or rise. After the test, the

test fuel tank shall not show any leakage, when using a leak detection method other than the pressure-

drop method.

NOTE Soapy water or a similar solution, both of which should be non-corrosive and non-toxic, can be used as

well as total immersion of the tank in water. Most small leaks do not produce an immediately detectable drop on

the face of the pressure gauge, but soap solutions or immersion can reveal very small leaks by bubbling. Do not

use solutions containing ammonia which is present in some soaps and detergents. This creates a condition that

attacks brass fittings like those used in fuel systems. Damage may be undetectable at first, and these fittings may

develop cracks in a matter of months creating a very hazardous situation.
7.2.2 Hydraulic pressure/strength type test

After the leakage test (7.2.1) the fuel tank, with all its accessories, shall be pressurized again according

to Table 2 to confirm strength requirements.
7.2.2.1 Metal and fibre-reinforced plastic (FRP) tanks
The pressure shall be gradually increased to the greater of
a) 20 kPa; or

b) 1,5 times the highest hydrostatic pressure to which the tank may be subjected in service (maximum

fill-up or overflow height above tank top); or

c) 1,5 times the maximum hydrostatic head at the designed tank fill level plus the system relief

pressure if the tank is to be used in a sealed fuel system.
This pressure shall be maintained for 5 min.

During this time, the tank shall not crack or leak, however, it may be permanently deformed.

7.2.2.2 Alternate pressure test for metal petrol fuel tanks

Metal tanks meeting the following criteria, can be pressure tested to this clause:

a) plating thicknesses, section modules and web shear areas of stiffeners meet the requirements in

ISO 12215-5 for integral tanks; and

b) follows the recommendations in ISO 12215-6 regarding structural details of metal construction;

and
c) welding quality meeting recognized industry accepted standards.
NOTE Requirements for the welding quality are found in ISO 5817.
The pressure shall be gradually increased to the greater of:
— 30 kPa; or

— 1,5 times the highest hydrostatic pressure to which the tank may be subjected in service (maximum

fill-up height above tank top) plus 10 kPa.
This pressure shall be maintained for 5 min.

During this time, the tank shall not crack or leak, however, it may be permanently deformed.

6 © ISO 2021 – All rights reserved
---------------------- Page: 14 ----------------------
oSIST prEN ISO 21487:2021
ISO/DIS 21487.2:2021(E)
7.2.2.3 Thermoplastic tank

Prior to the hydraulic pressure test, thermoplastic tanks shall filled and stored for at least 28 days at an

ambient temperature of not less than 21 °C. with one of the following fuels. The hydraulic pressure test

shall be performed immediately after emptying the test liquid out of the tank.
7.2.2.3.1 The fuel for which the tank is fabricated, or
7.2.2.3.2 Liquid C test fuel blended to 10,0 ± 1,0 % ethanol by volume, or

7.2.2.3.3 CE10 fuel which is a mixture of 90 % by volume of liquid C and 10 % by volume of fuel ethanol.

NOTE Lliquid C specifications can be found in ISO 1817.
The pressure shall be gradually increased to the greater of:
— 20 kPa; or

— 1,5 times the highest hydrostatic pressure to which the tank may be subjected in service (maximum

fill-up height above tank top); or

— 1,5 times the maximum hydrostatic head at the designed tank fill level plus the system relief

pressure if the tank is to be used in a sealed fuel system.
This pressure shall be maintained according to Table 1.

During this time, the tank shall not crack or leak, however, it may be permanently deformed.

7.3 Pressure-impulse type test for petrol fuel tanks

7.3.1 A test fuel tank, representative of the tank range, shall not exhibit any leakage or other signs of

failure after 25 000 cycles of pressure impulses.

7.3.2 The pressure-impulse test of thermoplastic tanks shall be conducted on a tank prepared in

accordance with 7.2.5.

7.3.3 The tank to be tested, fully filled with water, shall be mounted using the support, chocks or

brackets, either furnished with the tank or as intended to be used in a craft installation.

7.3.4 The tank to be tested shall be attached to a regulated source of pressure of either air, nitrogen

or water. The control mechanism of the pressure source shall then be set to cause pressure in the tank

under test, measured at its top-most surface, to vary from 0 kPa to 20 kPa to 0 kPa at a rate of not more

than 15 cycles per minute.

7.3.5 Before and after the pressure-impulse test, the tank shall meet the leakage test specified in 7.2.1.

7.4 General fire-resistance test for non-metallic fuel tanks

7.4.1 This test shall be conducted to qualify fuel tanks where the actual installation conditions are not

known.

7.4.1.1 A representative sample from the tank range can be selected for fire test.

The following criteria shall be met for a tank to be considered to be of the same range:

a) fabricated from the same material using the same methods;
© ISO 2021 – All rights reserved 7
---------------------- Page: 15 ----------------------
oSIST prEN ISO 21487:2021
ISO/DIS 21487.2:2021(E)
b) same wall thickness;
c) similar shape and must have the same number of surfaces, see Figure 1;

d) configuration, i.e. arrangement and geometric form of stiffeners, cones, recesses and fittings are

very similar;
e) if baffles are to be fitted, a maximal volume to
...

SLOVENSKI STANDARD
oSIST prEN ISO 21487:2020
01-december-2020

Mala plovila - Trajno vgrajeni rezervoarji za bencinsko in dizelsko gorivo (ISO/DIS

21487:2020)

Small craft - Permanently installed petrol and diesel fuel tanks (ISO/DIS 21487:2020)

Kleine Wasserfahrzeuge - Fest eingebaute Ottokraftstoff- und Dieselkraftstofftanks

(ISO/DIS 21487:2020)

Petits navires - Réservoirs à carburant à essence et diesel installés à demeure (ISO/DIS

21487:2020)
Ta slovenski standard je istoveten z: prEN ISO 21487
ICS:
47.020.20 Ladijski motorji Marine engines and
propulsion systems
47.080 Čolni Small craft
oSIST prEN ISO 21487:2020 en,fr,de

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

---------------------- Page: 1 ----------------------
oSIST prEN ISO 21487:2020
---------------------- Page: 2 ----------------------
oSIST prEN ISO 21487:2020
DRAFT INTERNATIONAL STANDARD
ISO/DIS 21487
ISO/TC 188 Secretariat: SIS
Voting begins on: Voting terminates on:
2020-10-05 2020-12-28
Small craft — Permanently installed petrol and diesel
fuel tanks
Petits navires — Réservoirs à carburant à essence et diesel installés à demeure
ICS: 47.080
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 21487:2020(E)
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. ISO 2020
---------------------- Page: 3 ----------------------
oSIST prEN ISO 21487:2020
ISO/DIS 21487:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

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: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 21487:2020
ISO/DIS 21487:2020(E)
Contents Page

4.1 Resistance to liquids in contact ................................................................................................................................................ 2

4.2 Copper-based alloys ........................................................................................................................................................................... 2

4.4 Installation of non-integral tanks ........................................................................................................................................... 3

4.4.1 Tank mechanical fixing ............................................................................................................................................... 3

4.4.2 Other installation requirements ......................................................................................................................... 4

5 Petrol fuel tanks: design, construction and tests ................................................................................................................ 4

5.2 Tests to be performed ....................................................................................................................................................................... 4

5.3 Evaporative emissions from non-metalic tanks ......................................................................................................... 4

6 Diesel fuel tanks: design, construction and tests ............................................................................................................... 5

6.2 Tests to be performed ....................................................................................................................................................................... 5

7 Tests ................................................................................................................................................................................................................................... 5

7.2 Hydraulic pressure test .................................................................................................................................................................... 6

7.2.1 Leakage test ...................................................................... .................................................................................................... 6

7.2.2 Hydraulic pressure/strength type test ......................................................................................................... 6

7.2.3 Metal and fibre-reinforced plastic (FRP) tanks ..................................................................................... 7

7.2.4 Thermoplastic tanks ..................................................................................................................................................... 7

3 7

7.2.5 Thermoplastic of density ≥ 935 kg/m .........................................................................................................

3 7

7.2.6 Thermoplastic of density < 935 kg/m .........................................................................................................

7.3 Pressure-impulse type test for petrol fuel tanks ....................................................................................................... 7

7.4 General fire-resistance test of non-metallic fuel tanks......................................................................................... 8

7.5 As-installed fire-resistance test of non-metallic fuel tanks .............................................................................. 9

Annex A (normative) Permeation testing of non-metallic fuel tanks .............................................................................11

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

requirements of Directive 2013/53/EU aimed to be covered ............................................................................15

© ISO 2020 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST prEN ISO 21487:2020
ISO/DIS 21487:2020(E)
Foreword