Gas welding equipment - Safety devices - Part 1: Devices incorporating a flame (flashback) arrestor (ISO 5175-1:2017)

ISO 5175-1:2017 specifies the general requirements and tests for safety devices for fuel gases and oxygen or compressed air incorporating a flame (flashback) arrestor used downstream of manifold, cylinder and/or pipeline outlet regulators, and upstream of blowpipes for welding, cutting and allied processes.
ISO 5175-1:2017 does not specify the location of these devices in the gas system.
ISO 5175-1:2017 is not applicable to safety devices not incorporating a flame arrestor, covered by ISO 5175‑2.
ISO 5175-1:2017 does not apply to the use of safety devices incorporating flame arrestors for applications with premixed oxy/fuel or air/fuel gas supply systems, e.g. downstream of gas mixers or a generator to produce hydrogen/oxygen mixture by electrolytic decomposition of water.

Gasschweißgeräte - Sicherheitseinrichtungen - Teil 1: Mit integrierter Flammensperre (ISO 5175-1:2017)

Dieses Dokument enthält die allgemeinen Anforderungen und Prüfungen für Sicherheitseinrichtungen für Brenngase und Sauerstoff oder Druckluft mit integrierter Flammensperre, die abströmseitig von Hauptstellen-, Flaschen- und/oder Leitungsdruckreglern und anströmseitig von Brennern für Schweißen, Schneiden und verwandte Prozesse angewendet werden.
Dieses Dokument macht keine Angaben über die Anordnung der Einrichtungen im Gassystem.
Dieses Dokument gilt nicht für Sicherheitseinrichtungen, die keine integrierte Flammensperre enthalten. Diese werden von ISO 5175-2 abgedeckt.
Dieses Dokument gilt nicht für die Verwendung von Sicherheitseinrichtungen mit integrierter Flammensperre für Anwendungen mit Gasversorgungssystemen für vorgemischte Sauerstoff/Brenngas- oder Luft/Brenngas-Gemische, z. B. abströmseitig von Gasmischern oder Gaserzeugern zur Herstellung von Wasserstoff/Sauerstoff-Gemischen durch elektrolytische Zersetzung von Wasser.

Matériel de soudage au gaz - Dispositifs de sécurité - Partie 1: Dispositifs avec arrêt de flamme (ISO 5175-1:2017)

ISO 5175-1:2017 spécifie les exigences générales et les essais des dispositifs de sécurité pour les gaz combustibles et l'oxygène ou l'air comprimé, avec arrêt de flamme (retour de flamme), utilisés en aval des centrales de détente, des détendeurs pour bouteilles et (ou) canalisations, et en amont des chalumeaux pour le soudage, le coupage et les techniques connexes.
ISO 5175-1:2017 ne spécifie pas la position de ces dispositifs dans la distribution du gaz.
ISO 5175-1:2017 ne s'applique pas aux dispositifs de sécurité sans arrêt de flamme couverts par l'ISO 5175‑2.
ISO 5175-1:2017 ne s'applique pas à l'utilisation de dispositifs de sécurité avec arrêt de flamme destinés à des applications comportant une alimentation de pré-mélange d'oxygène/gaz combustible ou d'air/gaz combustible, par exemple en aval de mélangeurs de gaz, ou d'un générateur prévu pour produire un mélange hydrogène/oxygène par décomposition électrolytique de l'eau.

Oprema za plamensko varjenje - Varnostne naprave - 1. del: Naprave z vgrajeno varovalko proti povratnemu udaru (ISO 5175-1:2017)

Ta del evropskega standarda določa splošne zahteve in preskuse za varnostne naprave za gorivne pline in kisik ali stisnjeni zrak z vgrajeno varovalko proti povratnemu udaru v smeri stran od regulatorjev v razdelilnikih, cilindrih in/ali dovodih cevi ter v smeri proti gorilnikom za varjenje, rezanje in sorodne postopke. Ta standard ne določa položajev teh naprav v plinskem sistemu. Ta standard ne vključuje zahtev za varnostne naprave brez vgrajene varovalke proti povratnemu udaru, ki so zajete v standardu EN 730-2. Ta standard ne zajema uporabe varnostnih naprav z vgrajeno varovalko proti povratnemu udaru s sistemi za dovod predhodno zmešanih plinskih mešanic kisika in goriva ali zraka in goriva, na primer v smeri stran od mešalnikov plina ali generatorja za pridobivanje mešanice vodika in kisika z elektrolitsko razgradnjo vode.

General Information

Status
Published
Publication Date
28-Nov-2017
Withdrawal Date
30-May-2018
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
29-Nov-2017
Completion Date
29-Nov-2017

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SLOVENSKI STANDARD
01-februar-2018
1DGRPHãþD
SIST EN 730-1:2003
Oprema za plamensko varjenje - Varnostne naprave - 1. del: Naprave z vgrajeno
varovalko proti povratnemu udaru (ISO 5175-1:2017)
Gas welding equipment - Safety devices - Part 1: Devices incorporating a flame
(flashback) arrestor (ISO 5175-1:2017)
Gasschweißgeräte - Sicherheitseinrichtungen - Teil 1: Mit integrierter Flammensperre
(ISO 5175-1:2017)
Matériel de soudage au gaz - Dispositifs de sécurité - Partie 1: Dispositifs avec arrêt de
flamme (ISO 5175-1:2017)
Ta slovenski standard je istoveten z: EN ISO 5175-1:2017
ICS:
25.160.30 Varilna oprema Welding equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 5175-1
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2017
EUROPÄISCHE NORM
ICS 25.160.30
English Version
Gas welding equipment - Safety devices - Part 1: Devices
incorporating a flame (flashback) arrestor (ISO 5175-
1:2017)
Matériel de soudage au gaz - Dispositifs de sécurité - Gasschweißgeräte - Sicherheitseinrichtungen - Teil 1:
Partie 1: Dispositifs avec arrêt de flamme (ISO 5175- Mit integrierter Flammensperre (ISO 5175-1:2017)
1:2017)
This European Standard was approved by CEN on 20 November 2017.

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
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 5175-1:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
European foreword
This document (EN ISO 5175-1:2017) has been prepared by Technical Committee ISO/TC 44 “Welding
and allied processes” in collaboration with Technical Committee CEN/TC 121 “Welding and allied
processes” the secretariat of which is held by DIN.
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 May 2018, and conflicting national standards shall be
withdrawn at the latest by May 2018.
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 730-1:2002.
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 5175-1:2017 has been approved by CEN as EN ISO 5175-1:2017 without any
modification.
INTERNATIONAL ISO
STANDARD 5175-1
Second edition
2017-09
Gas welding equipment — Safety
devices —
Part 1:
Devices incorporating a flame
(flashback) arrestor
Matériel de soudage au gaz — Dispositifs de sécurité —
Partie 1: Dispositifs avec arrêt de flamme
Reference number
ISO 5175-1:2017(E)
©
ISO 2017
ISO 5175-1:2017(E)
© 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
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved

ISO 5175-1:2017(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Design and materials . 4
4.1 Connection . 4
4.2 Materials . 4
5 Requirements . 4
5.1 General . 4
5.2 Gas tightness . 5
5.3 Pressure resistance . 6
5.4 Flame arrestor . 6
5.5 Flame arrestor with non-return valve . 6
5.6 Flame arrestor with temperature-sensitive cut-off valve . 6
5.7 Flame arrestor with pressure-sensitive cut-off valve . 6
5.8 Other multifunctional safety devices . 6
6 Methods for type testing . 6
6.1 General . 6
6.2 Accuracy of pressure and flow measurements . 7
6.3 Test gases . 7
6.4 Gas tightness test . 7
6.5 Pressure resistance test . 7
6.6 Non-return valve test . 7
6.7 Flame arrestor test . 8
6.8 Temperature-sensitive cut-off valve test . 9
6.9 Pressure-sensitive cut-off valve test .10
6.10 Internal leakage test for cut-off valves .10
7 Further tests .10
8 Manufacturer’s instructions .10
9 Marking .11
Annex A (informative) Gas flow measurement .12
Annex B (informative) Third party testing information .14
Annex C (informative) Production tests .15
ISO 5175-1:2017(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: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes,
Subcommittee SC 8, Equipment for gas welding, cutting and allied processes.
This first edition of ISO 5175-1, together with ISO 5175-2, cancels and replaces ISO 5175:1987, which has
been technically revised. It also incorporates the Amendment IS
...

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