ISO 12619-10:2017

Road vehicles — Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system components — Part 10: Pressure relief device (PRD)

ISO 12619-10:2017 specifies tests and requirements for the pressure relief device (PRD), a compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel system component intended for use on the types of motor vehicles defined in ISO 3833. It is applicable to vehicles using CGH2 in accordance with ISO 14687-1 or ISO 14687-2 and hydrogen/natural gas blend using natural gas in accordance with ISO 15403-1 and ISO/TR 15403-2. It is not applicable to the following: a) liquefied hydrogen (LH2) fuel system components; b) fuel containers; c) stationary gas engines; d) container mounting hardware; e) electronic fuel management; f) refuelling receptacles; g) fuel cell vehicles. NOTE 1 It is recognized that miscellaneous components not specifically covered herein can be examined to meet the criteria of this document and tested according to the appropriate functional tests. NOTE 2 All references to pressure in this document are considered gauge pressures unless otherwise specified.

Véhicules routiers — Composants des circuits d'alimentation pour hydrogène gazeux comprimé (CGH2) et mélanges de gaz naturel et hydrogène — Partie 10: Dispositif de surpression

General Information

• Status: Published
• Publication Date: 09-Aug-2017
• ICS: 43.060.40 - Fuel systems
• Technical Committee: ISO/TC 22/SC 41 - Specific aspects for gaseous fuels
• Drafting Committee: ISO/TC 22/SC 41/JWG 5 - Joint ISO/TC 22/SC 41 - ISO/TC 197 WG: Fuel system components and refuelling connector for vehicles propelled by blends of natural gas and hydrogen
• Current Stage: 9093 - International Standard confirmed
• Completion Date: 12-Jul-2023

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 12619-10
First edition
2017-08
Road vehicles — Compressed gaseous
hydrogen (CGH2) and hydrogen/
natural gas blends fuel system
components —
Part 10:
Pressure relief device (PRD)
Véhicules routiers — Composants des circuits d’alimentation pour
hydrogène gazeux comprimé (CGH2) et mélanges de gaz naturel et
hydrogène —
Partie 10: Dispositif de surpression
Reference number
ISO 12619-10:2017(E)
©
ISO 2017

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ISO 12619-10:2017(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
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www.iso.org
ii © ISO 2017 – All rights reserved

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ISO 12619-10:2017(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Marking . 2
5 Construction and assembly . 3
6 Tests . 3
6.1 Applicability . 3
6.2 Hydrostatic strength . 4
6.2.1 Housing . 4
6.2.2 Fusible material . 4
6.3 Leakage . 4
6.4 Bending moment . 5
6.5 Continued operation . 5
6.5.1 Test procedure . 5
6.5.2 Requirements . 5
6.6 Accelerated life . 5
6.6.1 General. 5
6.6.2 Test procedure . 5
6.6.3 Accelerated-life test temperature. 6
6.6.4 Requirements . 6
6.7 Benchtop activation . 6
6.7.1 General. 6
6.7.2 Thermally activated relief devices . 6
6.7.3 Parallel-combination relief devices . 7
6.8 Thermal cycling . 7
6.8.1 Test procedure . 7
6.8.2 Requirements . 8
6.9 Condensate-corrosion resistance . 8
6.9.1 Test procedure . 8
6.9.2 Test solution. 8
6.10 Flow capacity . 8
6.10.1 General. 8
6.10.2 Test procedure . 8
6.11 Impact due to drop and vibration . 9
6.11.1 Impact due to drop . 9
6.11.2 Vibration . 9
7 Production batch inspection and acceptance testing . 9
Annex A (normative) Determination of fusible material yield temperature and PRD
activation temperature .10
Bibliography .12
© ISO 2017 – All rights reserved iii

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ISO 12619-10:2017(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 on 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 the following
URL: w w w . i s o .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 41,
Specific aspects for gaseous fuels.
A list of all parts in the ISO 12619 series can be found on the ISO website.
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INTERNATIONAL STANDARD ISO 12619-10:2017(E)
Road vehicles — Compressed gaseous hydrogen
(CGH2) and hydrogen/natural gas blends fuel system
components —
Part 10:
Pressure relief device (PRD)
1 Scope
This document specifies tests and requirements for the pressure relief device (PRD), a compressed
gaseous hydrogen (CGH ) and hydrogen/natural gas blend fuel system component intended for use on
2
the types of motor vehicles defined in ISO 3833.
It is applicable to vehicles using CGH in accordance with ISO 14687-1 or ISO 14687-2 and
2
hydrogen/natural gas blend using natural gas in accordance with ISO 15403-1 and ISO/TR 15403-2. It
is not applicable to the following:
a) liquefied hydrogen (LH ) fuel system components;
2
b) fuel containers;
c) stationary gas engines;
d) container mounting hardware;
e) electronic fuel management;
f) refuelling receptacles;
g) fuel cell vehicles.
NOTE 1 It is recognized that miscellaneous components not specifically covered herein can be examined to
meet the criteria of this document and tested according to the appropriate functional tests.
NOTE 2 All references to pressure in this document are considered gauge pressures unless otherwise
specified.
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 12619-1, Road vehicles — Compressed gaseous hydrogen (CGH ) and hydrogen/natural gas blend fuel
2
system components — Part 1: General requirements and definitions
ISO 12619-2, Road vehicles — Compressed gaseous hydrogen (CGH ) and hydrogen/natural gas blend fuel
2
system components — Part 2: Performance and general test methods
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12619-1 and the following apply.
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ISO 12619-10:2017(E)

ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
3.1
activation pressure
rupture pressure, as specified by the pressure relief device (PRD) manufacturer, at which a PRD is
designed to activate to permit the discharge of the cylinder
3.2
activation temperature
temperature, as specified by the pressure relief device (PRD) manufacturer, at which a PRD is designed
to activate to permit the discharge of the cylinder
3.3
fusible material
metal, alloy, or other material capable of being melted where the melting is integral to the function of
the pressure relief device (PRD)
3.4
parallel-combination relief device
pressure relief device (PRD) activated by high temperature or pressure acting separately
Note 1 to entry: This device may be integrated into one device that has independent pressure-activated
and thermally activated parts. It may also be formed by two independent devices (one pressure-activated
and one thermally activated) that act independently. Each part of the device shall not interfere with the
operation/activation of the other part. The device shall be able to vent the content of the cylinder through any one
of the parts of the PRD independently. The device shall be able to vent the content of the cylinder if the pressure-
and thermally activated parts open simultaneously.
3.5
pressure-activated relief device
pressure relief device (PRD) activated by pressure
3.6
burst disc
rupture disc
operating part of a pressure-activated pressure relief device (PRD) which, when installed in the device,
is designed to burst at a predetermined pressure to permit discharge of the cylinder
3.7
thermally activated relief device
pressure relief device (PRD) activated by high temperature
3.8
yield temperature
temperature at which the fusible material (3.3) becomes sufficiently soft to activate the device and to
permit discharge of the cylinder
4 Marking
If the PRD is a stand-alone component, marking shall provide sufficient information to allow the
following to be traced:
a) the manufacturer’s or agent’s name, trademark or symbol;
b) the fusible material yield temperature or PRD activation temperature in accordance with Annex A
and the rupture disc pressure rating or activation pressure, as appropriate;
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ISO 12619-10:2017(E)

c) the type of relief device (thermally activated, parallel-combination, etc.).
If there is a possibility that the PRD could be installed with the flow in the wrong direction, the PRD
shall be marked with an arrow to show the direction of flow.
This information can be provided by a suitable identification code on at least one part of the component
when it consists of more than one part.
5 Construction and assembly
The PRD shall comply with the applicable provisions of ISO 12619-1 and ISO 12619-2 and with the tests
specified in Clause 6. Tolerances should follow the specifications of ISO 12619-2.
The PRD may be integrated with other components. The other components shall not interfere with the
operation/activation of the PRD.
6 Tests
6.1 Applicability
The tests required to be carried out are indicated in Table 1.
Table 1 — Applicable tests
Test procedure
Specific test requirements
Test Applicable as required by
of this document
ISO 12619-2
Hydrostatic strength X — X (see 6.2)
Leakage X — X (see 6.3)
Excess torque resistance X X —
a
Bending moment X — X (see 6.4)
Continued operation X — X (see 6.5)
Corrosion resistance X X —
Oxygen ageing X X —
Ozone ageing X X —
Heat ageing X X —
Automotive fluids X X —
Non-metallic material immersion X X —
Vibration resistance X X —
Brass material compatibility X X —
Accelerated life X — X (see 6.6)
Benchtop activation X — X (see 6.7)
Thermal cycling X — X (see 6.8)
Condensate-corrosion resistance X — X (see 6.9)
Flow capacity X — X (see 6.10)
Impact due to drop and vibration X — X (see 6.11)
a
This test is to confirm proper design and construction of stand-alone, externally threaded PRD designs and is not
required if the PRD is internally imbedded in the valve body.
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ISO 12619-10:2017(E)

6.2 Hydrostatic strength
6.2.1 Housing
6.2.1.1 General
The manufacturer shall either physically test the housing or prove its strength by calculation.
6.2.1.2 Test procedure
6.2.1.2.1 Inlet passage str
...