prEN ISO 15012-3

Health and safety in welding and allied processes - Requirements, testing and marking of equipment for air filtration - Part 3: Determination of the capture efficiency of on-torch welding fume extraction devices (ISO/DIS 15012-3:2016)

This part of ISO 15012 defines a laboratory method for measuring the welding fume capture efficiency of ongun extraction systems. It is applicable to integrated on-gun systems and to systems where a discrete extraction system is attached to the welding torch close to the arc area. The methodology is suitable for use with all continuous wire welding processes, all material types and all welding parameters.
The method can be used to evaluate the effects of variables such as extraction flow rate, extract nozzle position, shielding gas flow rate, welding geometry, welding torch angle, fume emission rate etc. on capture efficiency but can also be used, with specific test conditions, to determine capture efficiency.

Arbeits- und Gesundheitsschutz beim Schweißen und bei verwandten Verfahren - Anforderungen, Prüfung und Kennzeichnung von Luftreinigungssystemen - Teil 3: Bestimmung des Erfassungsgrades von brennerintegrierten Absaugeinrichtungen für Schweißrauch (ISO/DIS 15012-3:2016)

Dieser Teil von ISO 15012 legt ein Laborverfahren zur Bestimmung des Erfassungsgrades von brennerinte-grierten Absaugeinrichtungen für Schweißrauch fest. Er ist anwendbar auf brennerintegrierte Systeme und Systeme, bei denen eine eigenständige Absauganlage am Schweißbrenner nahe des Lichtbogen-Bereiches angebracht ist. Das Verfahren eignet sich für den Einsatz bei allen kontinuierlichen Drahtschweißverfahren, allen Materialtypen und allen Schweißparametern.
Das Verfahren kann angewendet werden, um die Auswirkungen von Variablen wie Extraktionsdurchflussrate, Brennerposition, Schutzgasdurchfluss, Schweißgeometrie, Schweißbrennerwinkel, Abluftemissionsrate usw. auf Erfassungsgrades zu bestimmen.

Hygiène et sécurité en soudage et techniques connexes - Exigences, essais et marquage des équipements de filtration d'air - Partie 3: Détermination de l'efficacité de captage des systèmes d'extraction des fumées de soudage par torche aspirante (ISO/DIS 15012-3:2016)

Varnost in zdravje pri varjenju in sorodnih postopkih - Zahteve, preskušanje in označevanje opreme za filtriranje zraka - 3. del: Ugotavljanje učinkovitosti zajema pri napravah za ekstrakcijo (odsesavanje) varilnega dima (ISO/DIS 15012-3:2016)

General Information

• Status: Not Published
• Publication Date: 28-Feb-2018
• Withdrawal Date: 02-Sep-2018
• ICS: 13.040.40 - Stationary source emissions
• ICS: 25.160.01 - Welding, brazing and soldering in general
• ICS: 25.160.30 - Welding equipment
• Technical Committee: CEN/TC 121 - Welding
• Drafting Committee: CEN/TC 121 - Welding
• Current Stage: 3098 - Decision to reject - Consensus building
• Completion Date: 21-Dec-2016
• Ref Project: oSIST prEN ISO 15012-3:2016 - Health and safety in welding and allied processes - Requirements, testing and marking of equipment for air filtration - Part 3: Determination of the capture efficiency of on-torch welding fume extraction devices (ISO/DIS 15012-3:2016)

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2016
9DUQRVWLQ]GUDYMHSULYDUMHQMXLQVRURGQLKSRVWRSNLK=DKWHYHSUHVNXãDQMHLQ
R]QDþHYDQMHRSUHPH]DILOWULUDQMHGHO8JRWDYOMDQMHXþLQNRYLWRVWL]DMHPDSUL
QDSUDYDK]DHNVWUDNFLMRRGVHVDYDQMHYDULOQHJDGLPD,62',6
Health and safety in welding and allied processes - Requirements, testing and marking of
equipment for air filtration - Part 3: Determination of the capture efficiency of on-torch
welding fume extraction devices (ISO/DIS 15012-3:2016)
Arbeits- und Gesundheitsschutz beim Schweißen und bei verwandten Verfahren -
Anforderungen, Prüfung und Kennzeichnung von Luftreinigungssystemen - Teil 3:
Bestimmung des Erfassungsgrades von brennerintegrierten Absaugeinrichtungen für
Schweißrauch (ISO/DIS 15012-3:2016)
Hygiène et sécurité en soudage et techniques connexes - Exigences, essais et
marquage des équipements de filtration d'air - Partie 3: Détermination de l'efficacité de
captage des systèmes d'extraction des fumées de soudage par torche aspirante
(ISO/DIS 15012-3:2016)
Ta slovenski standard je istoveten z: prEN ISO 15012-3
ICS:
13.040.40 (PLVLMHQHSUHPLþQLKYLURY Stationary source emissions
13.100 Varnost pri delu. Industrijska Occupational safety.
higiena Industrial hygiene
25.160.10 Varilni postopki in varjenje Welding processes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT INTERNATIONAL STANDARD
ISO/DIS 15012-3
ISO/TC 44/SC 9 Secretariat: BSI
Voting begins on: Voting terminates on:
2016-08-02  2016-10-24
Health and safety in welding and allied processes —
Requirements, testing and marking of equipment for air
filtration —
Part 3:
Determination of the capture efficiency of on-gun welding
fume extraction devices
Hygiène et sécurité en soudage et techniques connexes — Exigences, essais et marquage des équipements
de filtration d’’air —
Partie 3: Détermination de l’efficacité de la prise des appareils d’extraction des fumées de soudage
ICS: 25.160.30
THIS DOCUMENT IS A DRAFT CIRCULATED
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,
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BE CONSIDERED IN THE LIGHT OF THEIR
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WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 15012-3:2016(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 2016

ISO/DIS 15012-3:2016(E)
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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ii © ISO 2016 – All rights reserved

ISO/DIS 15012-3:2016(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3  Terms and definitions . 1
4 Principle . 2
5 Test equipment and materials . 2
5.1 General requirement . 2
5.2 Test chamber . 2
5.3 Isokinetic samplers . 2
5.4 Total fume and isokinetic filters. 2
5.5 Extraction fan . 2
5.6 On-torch extraction unit . 3
5.7 Equipment for measuring welding current, welding voltage, wire feed speed and
arcing time . 3
5.8 Equipment for direct-reading of fume concentration . 3
5.9 Equipment for measuring the mass of fume collected . 3
5.10 Equipment for measuring shielding gas volume flow rate . 3
5.11 Device for automatic welding . 3
5.12 Device for measuring contact tip to workpiece distance (CTWD) . 3
5.13 Device for measuring static pressure . 4
5.14 Device for measuring the mass flow rate . 4
5.15 Materials . 4
6 Test procedure . 4
6.1 Preliminary tests . 4
6.1.1 Setting the shielding gas flow rate . 4
6.1.2 Measuring the flow rates and determination of leakage . 4
6.2 Setting up the test equipment . 5
6.3 Capture efficiency tests . 6
6.3.1 General. 6
6.3.2 Test procedure . 6
6.3.3 Calculation of the results . 7
7  Test parameters for generating comparable test report capture efficiency data .8
8  Test report . 9
Annex A (informative) Examples of test chambers .10
Annex B (informative) Equipment notes .12
Annex C (informative) Trial tests .14
Annex D (normative) Test procedures.16
Annex E (informative) Data processing for test method 3 .17
Annex F (normative) Test parameters form to be filled .19
Annex G (informative) Suggested parameters for testing .20
Annex H (informative) Information about the necessity to measure leakage .21
Bibliography .22
ISO/DIS 15012-3:2016(E)
Foreword
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bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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electrotechnical standardization.
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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
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Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.
The committee responsible for this document is ISO/44/SC 9.
A list of all parts in the ISO 15012- series can be found on the ISO website.
iv © ISO 2016 – All rights reserved

ISO/DIS 15012-3:2016(E)
Introduction
Welding generates fumes and gases which, if inhaled, can be harmful to human health. Therefore,
control of the fume and gases must be exercised to minimise worker exposure.
The most effective method of welding fume control is local exhaust ventilation (LEV) which captures
the fumes at source before they enter the general environment and the breathing zone of workers.
One form of LEV used in welding is on-torch extraction in which the extraction system is either an
integral part of the welding torch or is attached to it close to the arc area. Anecdotal evidence within
the fabrication industry suggested that it is impossible to capture fume efficiently whilst maintaining
[[4]]
weld metal integrity but research (see bibliography ) has shown this not to be the case, certainly as
far as weld metal porosit
...