EN ISO 20485:2018

Non-destructive testing - Leak testing - Tracer gas method (ISO 20485:2017)

ISO 20485:2017 describes the techniques to be applied for the detection of a leak, using a tracer gas and a tracer gas specific leak detector.

Zerstörungsfreie Prüfung - Dichtheitsprüfung - Prüfgasverfahren (ISO 20485:2017)

Dieses Dokument beschreibt die anzuwendenden Verfahren zur Erkennung eines Lecks durch ein Prüfgas und einen prüfgasspezifischen Leckdetektor

Essais non destructifs - Contrôle d'étanchéité - Méthode par gaz traceur (ISO 20485:2017)

ISO 20485:2017 décrit les techniques à appliquer pour la détection d'une fuite à l'aide d'un gaz traceur et d'un détecteur de fuites spécifique au gaz traceur utilisé.

Neporušitveno preskušanje - Preiskava tesnosti - Metoda slednega plina (ISO 20485:2017)

Ta standard opisuje tehnike za zaznavanje uhajanja z uporabo indikatorskega plina in detektorja uhajanja, namenjenega za uporabo z indikatorskim plinom.

General Information

• Status: Published
• Publication Date: 06-Feb-2018
• Withdrawal Date: 30-Aug-2018
• ICS: 19.100 - Non-destructive testing
• Technical Committee: CEN/TC 138 - Non-destructive testing
• Drafting Committee: CEN/TC 138/WG 6 - Leak testing
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 07-Feb-2018
• Due Date: 26-Apr-2018
• Completion Date: 07-Feb-2018
• Ref Project: SIST EN ISO 20485:2018 - Non-destructive testing - Leak testing - Tracer gas method (ISO 20485:2017)

Relations

• Replaces: EN 13185:2001 - Non-destructive testing - Leak testing - Tracer gas method
• Effective Date: 14-Feb-2018
• Replaces: EN 13185:2001/A1:2003 - Non-destructive testing - Leak testing - Tracer gas method
• Effective Date: 25-Oct-2017

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2018
1DGRPHãþD
SIST EN 13185:2002
SIST EN 13185:2002/A1:2004
Neporušitveno preskušanje - Preiskava tesnosti - Metoda slednega plina (ISO
20485:2017)
Non-destructive testing - Leak testing - Tracer gas method (ISO 20485:2017)
Zerstörungsfreie Prüfung - Dichtheitsprüfung - Prüfgasverfahren (ISO 20485:2017)
Essais non destructifs - Contrôle d'étanchéité - Méthode par gaz traceur (ISO
20485:2017)
Ta slovenski standard je istoveten z: EN ISO 20485:2018
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 20485
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2018
EUROPÄISCHE NORM
ICS 19.100 Supersedes EN 13185:2001
English Version
Non-destructive testing - Leak testing - Tracer gas method
(ISO 20485:2017)
Essais non destructifs - Contrôle d'étanchéité - Zerstörungsfreie Prüfung - Dichtheitsprüfung -
Méthode par gaz traceur (ISO 20485:2017) Prüfgasverfahren (ISO 20485:2017)
This European Standard was approved by CEN on 26 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20485:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 20485:2018) has been prepared by Technical Committee ISO/TC 135 "Non-
destructive testing" in collaboration with Technical Committee CEN/TC 138 “Non-destructive testing”,
the secretariat of which is held by AFNOR.
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 August 2018, and conflicting national standards shall
be withdrawn at the latest by August 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 13185:2001.
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 20485:2017 has been approved by CEN as EN ISO 20485:2018 without any modification.

INTERNATIONAL ISO
STANDARD 20485
First edition
2017-11
Non-destructive testing — Leak testing
— Tracer gas method
Essais non destructifs — Contrôle d'étanchéité — Méthode par gaz
traceur
Reference number
ISO 20485:2017(E)
©
ISO 2017
ISO 20485:2017(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.
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ii © ISO 2017 – All rights reserved

ISO 20485:2017(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principles of detection. 1
5 Generation and detection of tracer gas flow . 2
5.1 Tracer gas flows into the object (Group A techniques) . 2
5.2 Tracer gas flows out of the object (Group B techniques) . 2
6 Apparatus . 2
7 Object preparation . 2
8 Group A techniques, tracer gas flows into the object. . 3
8.1 General . 3
8.2 Initial system set-up procedure . 3
8.3 Vacuum technique (total) test procedure (A.1) . 4
8.4 Vacuum technique (partial) test procedure (A.2) . 5
8.5 Vacuum technique (local) test procedure (A.3) . 5
9 Group B techniques, tracer gas flows out of object . 6
9.1 General . 6
9.2 Initial system set up procedure . 7
9.2.1 Ammonia test with colour-change reagents (B.1) . 7
9.2.2 Tracer gas flowing out of the object (B.2, B.3, B.4, B.6) . 7
9.2.3 Pressurisation — Evacuation test (B.5) . 8
9.3 Ammonia test procedure (B.1) . 8
9.3.1 General. 8
9.3.2 Test object preparation . 8
9.3.3 Reagent application . 8
9.3.4 Ammonia pressurization . 8
9.3.5 Impregnation time. 9
9.3.6 Visual examination . 9
9.3.7 Post test cleaning . 9
9.4 Vacuum box test procedure (B.2.1, B.2.2) . 9
9.4.1 General. 9
9.4.2 Vacuum box technique for closed objects B.2.1 . 9
9.4.3 Vacuum box technique for open objects B.2.2 .10
9.5 Accumulation technique (B.3) .10
9.5.1 General.10
9.5.2 Accumulation technique procedure (B.3) .10
9.6 Sniffing test (B.4) .12
9.7 Bombing technique (B.5) .12
9.8 Vacuum chamber technique (B.6) .14
9.9 Carrier gas technique (B.7) .15
10 Test report .16
Annex A (informative) Accumulation technique: calibrated leak connected to enclosure of
unknown volume .17
Bibliography .19
ISO 20485:2017(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
dif
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