SIST EN ISO 15012-4:2016

Health and safety in welding and allied processes - Equipment for capture and separation of welding fume - Part 4: General requirements (ISO 15012-4:2016)

This standard specifies general requirements for the function of equipment for capture and separation of welding fume, with a focus on avoiding unintended release of hazardous substances during its use to maintain a healthy work place atmosphere. Fulfilling the requirements specified in this standard will ensure a safe operation and functioning of the separation equipment. Enclosures are not covered by this standard.

Arbeits- und Gesundheitsschutz beim Schweißen und bei verwandten Verfahren - Einrichtungen zum Erfassen und Abscheiden von Schweißrauch - Teil 4: Allgemeine Anforderungen (ISO 15012-4:2016)

Einrichtungen zum Erfassen und Abscheiden von Schweißrauch, wie z. B. Punktabsaugsysteme (LEV) oder Umhausungen zum Absaugen von Schweißrauch, sind Sicherheitsteile. Funktionsfehler können Gesundheitsschäden bei den Schweißern hervorrufen.
Einrichtungen zum Erfassen und Abscheiden von Schweißrauch bestehen aus Erfassungseinrichtungen, Rohrleitungen, Filtereinheiten und Gebläsen Die Dimensionierung dieser Bauteile hat Einfluss auf die Funktion des gesamten Systems. Dies ist vom Konstrukteur zu berücksichtigen.
Diese Internationale Norm legt zur Erfüllung der Sicherheitsfunktionen die Anforderungen an Einrichtungen zum Erfassen und Abscheiden von Schweißrauch fest. Eine derartige Einrichtung kann ein Punktabsaugsystem oder ein Umhausung sein. Diese Norm behandelt keine grundlegenden Sicherheitsaspekte für die Einrichtung als Maschine, wie elektrische, mechanische und pneumatische Gefährdungen.
Diese Norm gilt für:
   LEV (Punktabsaugsystemen);
   Umhausungen, die für Personen unzugänglich sind, wenn sie in Betrieb sind;
   mobile und stationäre Systeme.
Diese Norm gilt nicht für:
   Anlagen zur allgemeinen Belüftung, Luftaufbereitung oder Luftumwälzsysteme;
   Klimaanlagen;
   Abscheidung von Gasen, die beim Schweißen entstehen oder verwendet werden;
   Punktabsaugsysteme die für die Beseitigung von reaktiven, potentiell explosiven Partikeln und/oder Gasen verwendet werden, die beim Schweißen und den verwandten Verfahren auftreten können.
Diese Norm gilt für Einrichtungen, die nach Veröffentlichung dieser Norm konstruiert wurden.

Hygiène et sécurité en soudage et techniques connexes - Équipements de captage et de filtration des fumées de soudage - Partie 4: Exigences générales (ISO 15012-4:2016)

L'ISO 15012-4 :2016 définit les exigences générales relatives à l'équipement de ventilation servant à contrôler l'exposition aux fumées produites par le soudage et les techniques connexes. Elle s'applique à la conception et à la fabrication de toutes les pièces de l'équipement, notamment les bouches, les conduits, les unités de filtration, les dispositifs d'entraînement de l'air et les systèmes qui signalent un fonctionnement dangereux, et aux pratiques sur le lieu de travail visant à assurer un travail en toute sécurité en matière d'exposition.
Les phénomènes dangereux significatifs sont énumérés dans l'Article 4. La présente norme ne traite pas des phénomènes dangereux électriques, mécaniques et pneumatiques.
L'ISO 15012-4 :2016 est applicable:
- aux systèmes de ventilation par aspiration localisée (LEV);
- aux équipements mobiles et fixes.
Elle ne s'applique pas:
- aux systèmes de ventilation générale, d'air d'appoint ou de déplacement d'air;
- aux systèmes de conditionnement d'air;
- à la filtration des gaz produits par ou utilisés pour les procédés de soudage et les techniques connexes;
- aux LEV utilisés pour le soudage et les techniques connexes qui produisent des particules et atmosphères réactives, potentiellement explosives;
- à la poussière de meulage.
L'ISO 15012-4 :2016 s'applique aux systèmes conçus et fabriqués après sa publication.

Varnost in zdravje pri varjenju in sorodnih postopkih - Oprema za zajem in ločevanje varilnega dima - 4. del: Splošne zahteve (ISO 15012-4:2016)

Ta standard določa splošne zahteve za delovanje opreme za zajem in ločevanje varilnega dima s poudarkom na preprečevanju nenamernega izpusta nevarnih snovi v času njene uporabe ter ohranjanju zdravja v delovnem okolju. Izpolnjene zahteve, določene v tem standardu, zagotavljajo varno uporabo in delovanje ločevalne opreme. Ta standard ne obravnava ohišij.

General Information

• Status: Withdrawn
• Public Enquiry End Date: 31-Dec-2013
• Publication Date: 06-Sep-2016
• Withdrawal Date: 05-Apr-2020
• ICS: 13.040.40 - Stationary source emissions
• ICS: 13.100 - Occupational safety. Industrial hygiene
• ICS: 25.160.10 - Welding processes
• Technical Committee: VAR - Welding
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 31-Mar-2020
• Due Date: 23-Apr-2020
• Completion Date: 06-Apr-2020
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: EN ISO 15012-4:2016 - Health and safety in welding and allied processes - Equipment for capture and separation of welding fume - Part 4: General requirements (ISO 15012-4:2016)

Relations

• Replaced By: SIST EN ISO 21904-1:2020 - Health and safety in welding and allied processes - Equipment for capture and separation of welding fume - Part 1: General requirements (ISO 21904-1:2020)
• Effective Date: 01-May-2020

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 15012-4:2016
01-oktober-2016
Varnost in zdravje pri varjenju in sorodnih postopkih - Oprema za zajem in
ločevanje varilnega dima - 4. del: Splošne zahteve (ISO 15012-4:2016)
Health and safety in welding and allied processes - Equipment for capture and
separation of welding fume - Part 4: General requirements (ISO 15012-4:2016)
Arbeits- und Gesundheitsschutz beim Schweißen und bei verwandten Verfahren -
Einrichtungen zum Erfassen und Abscheiden von Schweißrauch - Teil 4: Allgemeine
Anforderungen (ISO 15012-4:2016)
Hygiène et sécurité en soudage et techniques connexes - Équipements de captage et de
filtration des fumées de soudage - Partie 4: Exigences générales (ISO 15012-4:2016)
Ta slovenski standard je istoveten z: EN ISO 15012-4:2016
ICS:
13.040.40 Emisije nepremičnih virov Stationary source emissions
13.100 Varnost pri delu. Industrijska Occupational safety.
higiena Industrial hygiene
25.160.10 Varilni postopki in varjenje Welding processes
SIST EN ISO 15012-4:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 15012-4:2016

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SIST EN ISO 15012-4:2016


EN ISO 15012-4
EUROPEAN STANDARD

NORME EUROPÉENNE

July 2016
EUROPÄISCHE NORM
ICS 25.160.30
English Version

Health and safety in welding and allied processes -
Equipment for capture and separation of welding fume -
Part 4: General requirements (ISO 15012-4:2016)
Hygiène et sécurité en soudage et techniques connexes Arbeits- und Gesundheitsschutz beim Schweißen und
- Équipements de captage et de filtration des fumées de bei verwandten Verfahren - Einrichtungen zum
soudage - Partie 4: Exigences générales (ISO 15012- Erfassen und Abscheiden von Schweißrauch - Teil 4:
4:2016) Allgemeine Anforderungen (ISO 15012-4:2016)
This European Standard was approved by CEN on 15 April 2016.

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, 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: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15012-4:2016 E
worldwide for CEN national Members.

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SIST EN ISO 15012-4:2016
EN ISO 15012-4:2016 (E)
Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of EU Directive 2006/42/EC aimed to be covered . 4

2

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SIST EN ISO 15012-4:2016
EN ISO 15012-4:2016 (E)
European foreword
This document (EN ISO 15012-4:2016) 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 January 2017, and conflicting national standards shall
be withdrawn at the latest by January 2017.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive, see informative Annex ZA, which is an integral part of this
document.
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, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 15012-4:2016 has been approved by CEN as EN ISO 15012-4:2016 without any
modification.
3

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SIST EN ISO 15012-4:2016
EN ISO 15012-4:2016 (E)
Annex ZA
(informative)

Relationship between this European Standard and the essential
requirements of EU Directive 2006/42/EC aimed to be covered
This European Standard has been prepared under a Commission’s standardization request M/396
(Machinery) to provide one voluntary means of conforming to essential requirements of Directive
2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and
amending Directive 95/16/EC (recast).
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZA.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding essential requirements
of that EU Directive 2006/42/EC, and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and EU Directive 2006/42/EC
Essential Requirements of EU Clause(s)/subclause(s) Remarks/Notes
Directive 2006/42/EC of this EN
all requirements are covered all clauses —
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
4

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SIST EN ISO 15012-4:2016
INTERNATIONAL ISO
STANDARD 15012-4
First edition
2016-06-15
Health and safety in welding and allied
processes — Equipment for capture
and separation of welding fume —
Part 4:
General requirements
Hygiène et sécurité en soudage et techniques connexes —
Équipements de captage et de filtration des fumées de soudage —
Partie 4: Exigences générales
Reference number
ISO 15012-4:2016(E)
©
ISO 2016

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SIST EN ISO 15012-4:2016
ISO 15012-4:2016(E)

COPYRIGHT PROTECTED DOCUMENT
© 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
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. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2016 – All rights reserved

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SIST EN ISO 15012-4:2016
ISO 15012-4:2016(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
3.9 Extraction device . 3
4 Significant hazards . 3
5 Requirements and verifications . 3
5.1 General . 3
5.2 Welding fume separation equipment . 3
5.3 Extraction devices . 4
5.4 Flexible arms, hoses and hoods . 4
5.5 Ducting properties . 5
5.6 Spark arrestor . 6
5.7 Separation efficiency. 6
5.8 Filter cleaning system . 7
5.9 Filter changing. 7
5.10 Waste handling . 7
5.11 Air mover . 7
5.12 Signals/indicators . 8
5.13 Exhaust and cooling air . 9
6 Instructions for use . 9
7 Marking .10
Annex A (informative) Malfunctions and determination of minimum airflow .11
Bibliography .12
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SIST EN ISO 15012-4:2016
ISO 15012-4:2016(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 meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 44, Welding and allied processes, Subcommittee
SC 9, Health and safety.
ISO 15012 consists of the following parts, under the general title Health and safety in welding and allied
processes — Equipment for capture and separation of welding fume:
— Part 1: Requirements for testing and marking of separation efficiency
— Part 2: Determination of the minimum air volume flow rate of captor hoods and nozzles
— Part 3: Determination of the capture efficiency of on-gun welding fume extraction devices
— Part 4: General requirements
Requests for official interpretations of any aspect of this International Standard should be directed to
the Secretariat of ISO/TC 44/SC 9 via your national standards body. A complete listing of these bodies
can be found at www.iso.org.
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SIST EN ISO 15012-4:2016
ISO 15012-4:2016(E)

Introduction
Welding and allied processes generate fumes and gases which, if inhaled, can be harmful to human
health. Therefore, control of the fumes and gases generated is to be exercised to minimize worker
exposure.
The most effective method of control is to capture the fumes and gases close to their source before they
enter a worker’s breathing zone or the general workplace environment.
Ventilation equipment used to capture the fumes and gases is to be fit for purpose because inefficient
capture could result in high exposure and can be detrimental to workers’ health. It is important
therefore that it adheres to defined manufacturing, materials and design requirements and gives
warning of malfunction.
This part of ISO 15012 defines the general requirements that are necessary for ventilation equipment
to maintain exposure to fumes at acceptable levels.
This part of ISO 15012 is a type-B standard as stated in ISO 12100.
This part of ISO 15012 is of relevance, in particular, for the following stakeholder groups representing
the market players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organizations, market surveillance, etc.).
Others can be affected by the level of machinery safety achieved with the means of this part of ISO 15012
by the above-mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (e.g. trade unions, organizations for people with special needs);
— service providers, e.g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting
process of this part of ISO 15012.
In addition, this part of ISO 15012 is intended for standardization bodies elaborating type-C standards.
The requirements of this part of ISO 15012 can be supplemented or modified by a type-C standard.
For machines which are covered by the scope of a type-C standard and which have been designed and
built according to the requirements of that standard, the requirements of that type-C standard take
precedence.
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SIST EN ISO 15012-4:2016

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SIST EN ISO 15012-4:2016
INTERNATIONAL STANDARD ISO 15012-4:2016(E)
Health and safety in welding and allied processes —
Equipment for capture and separation of welding fume —
Part 4:
General requirements
1 Scope
This part of ISO 15012 defines the general requirements for ventilation equipment used to control
exposure to fumes generated by welding and allied processes. It applies to the design and manufacture
of all parts of the equipment including hoods, ducting, filter units, air movers, systems that inform of
unsafe operation and workplace practices to ensure safe working with regard to exposure.
Significant hazards are listed in Clause 4. It does not cover electrical, mechanical and pneumatic
hazards.
This part of ISO 15012 is applicable to the following:
— local exhaust ventilation systems (LEV);
— mobile and stationary equipment.
This part of ISO 15012 is not applicable to the following:
— general ventilation, air make up or air movement systems;
— air conditioning systems;
— separation of gases generated by or used by welding and allied processes;
— LEV used for welding and allied processes that generate reactive potentially explosive particles and
atmospheres;
— grinding dust.
This part of ISO 15012 applies to systems designed and manufactured after its publication.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 15012-1:2013, Health and safety in welding and allied processes — Equipment for capture and
separation of welding fume — Part 1: Requirements for testing and marking of separation efficiency
ISO 15012-2, Health and safety in welding and allied processes — Requirements, testing and marking of
equipment for air filtration — Part 2: Determination of the minimum air volume flow rate of captor hoods
and nozzles
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-gun welding fume
extraction
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SIST EN ISO 15012-4:2016
ISO 15012-4:2016(E)

IEC 60204-1:2005, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
IEC 60335-2-69, Household and similar electrical appliances — Safety — Part 2-69: Particular requirements
for wet and dry vacuum cleaners, including power brush, for commercial use
IEC 60695-2-12, Fire hazard testing — Part 2-12: Glowing/hot-wire based test methods — Glow-wire
flammability index (GWFI) test method for materials
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12100 and the following apply.
3.1
welding fume separation equipment
air filtration equipment, the purpose of which is to separate particles generated by welding and allied
processes from workplace air
3.2
filter cleaning system
system designed to clean the filter of welding fume separation equipment in order to restore the air
flow rate through the filter when it is reduced by an accumulation of welding fume particles
3.3
on-line filter cleaning system
filter cleaning system operating while welding fume separation equipment is working
3.4
off-line filter cleaning system
filter cleaning system operating after the air mover of the filtration equipment is switched off
3.5
separation efficiency by mass
ratio of the mass of particles retained by welding fume separation equipment to the mass of particles
entering the equipment during a given period
Note 1 to entry: General information on test methods for determination of separation efficiency is described in
EN 1093-6 and EN 1093-7.
3.6
emission rate
mass of the particles emitted by the welding fume source per time
Note 1 to entry: Emission rate is expressed in milligrams per second.
3.7
local exhaust ventilation
LEV
use of extraction to remove contaminated air at or near to its source
3.8
spark arrestor
device, normally positioned at the intake of welding fume separation equipment, used to prevent the
damaging impact of sparks and large particles on filter media
Note 1 to entry: Examples of spark arrestors are cyclones, spin separators, baffles or sieves. A spark arrestor
may be designed to also protect against flame damage.
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SIST EN ISO 15012-4:2016
ISO 15012-4:2016(E)

3.9 Extraction device
3.9.1
captor hood
equipment (movable or fixed) that generates sufficient air velocity at the source to capture and draw in
the contaminated air
3.9.2
receiving hood
passive equipment (movable or fixed), normally positioned above a hot process, where the contaminated
air is propelled into it by process-induced air movement
3.9.3
enclosure
chamber
fully or partially enclosed space where the process takes place, designed to contain and prevent the
escape of hazardous substances into the workshop air
3.10
welding fume
airborne particles generated during welding
4 Significant hazards
Exposure to fumes and gases generated by welding and allied processes can be detrimental to health.
Control of exposure can usually be achieved using ventilation equipment but any failure of this
equipment, such as poor design and the use of parts made of unsuitable materials, can result in reduced
extraction efficiency and hence over exposure and ill health.
Common health effects include respiratory disease, but exposure to carcinogenic substances during the
welding of alloyed materials can occur and shall be considered.
The requirements of the ventilation equipment are dependent on the level of control necessary.
5 Requirements and verifications
5.1 General
Machinery shall comply with the safety requirements and/or protective/risk reduction measures in
Clause 5. In addition, the machine shall be designed according to the principles of ISO 12100 for relevant
but not significant hazards which are not dealt with by this part of ISO 15012.
5.2 Welding fume separation equipment
All parts and materials used in the manufacture of welding fume ventilation equipment shall withstand
the conditions (thermal, mechanical, UV radiation) present in the environment in which they are
intended to be used.
Verification shall be performed by examining the manufacturer’s datasheets, the instruction manual,
and by referring to the manufacturer’s long-term experience with respective devices.
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SIST EN ISO 15012-4:2016
ISO 15012-4:2016(E)

5.3 Extraction devices
5.3.1 General
Non-metallic hoods shall be made of materials of low flammability. Verification shall be performed by
examining compliance with the glow-wire end product test GWEPT: 550 according to IEC 60695-2-12
(glow-wire test temperature of 550 °C).
5.3.2 Captor hoods
Captor hoods shall comply with the requirements of ISO 15012-2.
5.3.3 Receiving hoods
An air volume flow rate sufficient to remove all the fumes received shall be employed.
NOTE 1 The air volume flow rate required depends on the thermal flow generated by the welding process, the
vertical distance between fume source and hood, and the dimensions of the receiving hood.
Verification that no fume escapes shall be performed qualitatively by visual inspection using a welding
fume source. See also Annex A.
NOTE 2 A possible method for visual inspection is using a dust lamp (Tyndall effect) under worst case welding
conditions.
5.3.4 Enclosures (chambers)
During fume generation and for a pre-determined clearance period afterwards, there shall be an inflow
of air through all openings sufficient to prevent any escape of fumes to the external environment.
Verification that no fume escapes shall be performed qualitatively by visual inspection with the welding
process operating. The required flow rate shall be recorded. See also Annex A.
NOTE 1 The flow rate can be different for different welding parameter/material combinations.
NOTE 2 A possible method for visual inspection is using a dust lamp (Tyndall effect) under worst case welding
conditions.
5.3.5 On-gun extraction devices
On-gun extraction devices shall comply with ISO 15012-3.
5.4 Flexible arms, hoses and hoods
5.4.1 Movement of flexible arms
It shall be possible (see Figure 1) to move a flexible arm in any direction using a force not exceeding
60 N at the handhold of the hood:
a) with the arm at 70 % of its maximum range;
b) at a point c, 1 300 mm ± 100 mm above ground level;
c) in the directions shown in Figure 1, over a range that is 10 % of the maximum range. The movement
in the Z-direction may follow an arc with radius a.
NOTE 1 If flexible arms do not fulfil the requirements, risk of incorrect use or non-use will increase because of
ergonomic reasons.
NOTE 2 The handhold is the point on the hood intended to be touched for movement.
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ISO 15012-4:2016(E)

The arm shall retain their position over the entire operating range after the force has been removed.
Verification that the arm is easily movable shall be achieved by measurement of forces and that it
retains its position by visual inspection.
Key
a
70 % of the maximum range.
b
Starting point of movement.
c
Point of force measurement.
Figure 1 — Example of a moving force test setup
5.4.2 Hoses
Non-metallic parts shall be made of materials of low flammability.
Verification shall be performed by examining compliance with GWEPT: 550 according to
IEC 60695-2-12 (glow-wire test temperature of 550 °C).
NOTE The use of materials of higher flammability can result in damage to the hose leading to reduced
airflow at the extraction point and hence poor extraction efficiency.
5.5 Ducting properties
The ducting shall
a) allow access for inspection and maintenance (e.g. hatches),
b) be sized, by calculation, to achieve a sufficient air velocity to minimize sedimentation, and
c) be made of metal or of materials of low flammability.
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SIST EN ISO 15012-4:2016
ISO 15012-4:2016(E)

NOTE 1 For welding and allied processes, an air velocity between 10 m/s and 15 m/s in the duct is usually
considered to be sufficient. Proper aerodynamic design of ducting, junct
...

SLOVENSKI STANDARD
SIST EN ISO 15012-4:2016
01-oktober-2016
9DUQRVWLQ]GUDYMHSULYDUMHQMXLQVRURGQLKSRVWRSNLK2SUHPD]D]DMHPLQ
ORþHYDQMHYDULOQHJDGLPDGHO=DKWHYH]DNRQVWUXLUDQMH,62
Health and safety in welding and allied processes - Equipment for capture and
separation of welding fume - Part 4: Design requirements (ISO 15012-4:2016)
Arbeits- und Gesundheitsschutz beim Schweißen und bei verwandten Prozessen -
Einrichtungen zum Erfassen und Abscheiden von Schweißrauch - Teil 4:
Gestaltungsanforderungen (ISO 15012-4:2016)
Hygiène et sécurité en soudage et techniques connexes - Exigences, essais et
marquage des équipements de filtration d'air - Partie 4: Exigences générales (ISO 15012
-4:2016)
Ta slovenski standard je istoveten z: EN ISO 15012-4:2016
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
SIST EN ISO 15012-4:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 15012-4:2016

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SIST EN ISO 15012-4:2016


EN ISO 15012-4
EUROPEAN STANDARD

NORME EUROPÉENNE

July 2016
EUROPÄISCHE NORM
ICS 25.160.30
English Version

Health and safety in welding and allied processes -
Equipment for capture and separation of welding fume -
Part 4: General requirements (ISO 15012-4:2016)
Hygiène et sécurité en soudage et techniques connexes Arbeits- und Gesundheitsschutz beim Schweißen und
- Équipements de captage et de filtration des fumées de bei verwandten Verfahren - Einrichtungen zum
soudage - Partie 4: Exigences générales (ISO 15012- Erfassen und Abscheiden von Schweißrauch - Teil 4:
4:2016) Allgemeine Anforderungen (ISO 15012-4:2016)
This European Standard was approved by CEN on 15 April 2016.

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, 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: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15012-4:2016 E
worldwide for CEN national Members.

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SIST EN ISO 15012-4:2016
EN ISO 15012-4:2016 (E)
Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of EU Directive 2006/42/EC aimed to be covered . 4

2

---------------------- Page: 4 ----------------------

SIST EN ISO 15012-4:2016
EN ISO 15012-4:2016 (E)
European foreword
This document (EN ISO 15012-4:2016) 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 January 2017, and conflicting national standards shall
be withdrawn at the latest by January 2017.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive, see informative Annex ZA, which is an integral part of this
document.
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, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 15012-4:2016 has been approved by CEN as EN ISO 15012-4:2016 without any
modification.
3

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SIST EN ISO 15012-4:2016
EN ISO 15012-4:2016 (E)
Annex ZA
(informative)

Relationship between this European Standard and the essential
requirements of EU Directive 2006/42/EC aimed to be covered
This European Standard has been prepared under a Commission’s standardization request M/396
(Machinery) to provide one voluntary means of conforming to essential requirements of Directive
2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and
amending Directive 95/16/EC (recast).
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZA.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding essential requirements
of that EU Directive 2006/42/EC, and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and EU Directive 2006/42/EC
Essential Requirements of EU Clause(s)/subclause(s) Remarks/Notes
Directive 2006/42/EC of this EN
all requirements are covered all clauses —
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
4

---------------------- Page: 6 ----------------------

SIST EN ISO 15012-4:2016
INTERNATIONAL ISO
STANDARD 15012-4
First edition
2016-06-15
Health and safety in welding and allied
processes — Equipment for capture
and separation of welding fume —
Part 4:
General requirements
Hygiène et sécurité en soudage et techniques connexes —
Équipements de captage et de filtration des fumées de soudage —
Partie 4: Exigences générales
Reference number
ISO 15012-4:2016(E)
©
ISO 2016

---------------------- Page: 7 ----------------------

SIST EN ISO 15012-4:2016
ISO 15012-4:2016(E)

COPYRIGHT PROTECTED DOCUMENT
© 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
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. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2016 – All rights reserved

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SIST EN ISO 15012-4:2016
ISO 15012-4:2016(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
3.9 Extraction device . 3
4 Significant hazards . 3
5 Requirements and verifications . 3
5.1 General . 3
5.2 Welding fume separation equipment . 3
5.3 Extraction devices . 4
5.4 Flexible arms, hoses and hoods . 4
5.5 Ducting properties . 5
5.6 Spark arrestor . 6
5.7 Separation efficiency. 6
5.8 Filter cleaning system . 7
5.9 Filter changing. 7
5.10 Waste handling . 7
5.11 Air mover . 7
5.12 Signals/indicators . 8
5.13 Exhaust and cooling air . 9
6 Instructions for use . 9
7 Marking .10
Annex A (informative) Malfunctions and determination of minimum airflow .11
Bibliography .12
© ISO 2016 – All rights reserved iii

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SIST EN ISO 15012-4:2016
ISO 15012-4:2016(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 meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 44, Welding and allied processes, Subcommittee
SC 9, Health and safety.
ISO 15012 consists of the following parts, under the general title Health and safety in welding and allied
processes — Equipment for capture and separation of welding fume:
— Part 1: Requirements for testing and marking of separation efficiency
— Part 2: Determination of the minimum air volume flow rate of captor hoods and nozzles
— Part 3: Determination of the capture efficiency of on-gun welding fume extraction devices
— Part 4: General requirements
Requests for official interpretations of any aspect of this International Standard should be directed to
the Secretariat of ISO/TC 44/SC 9 via your national standards body. A complete listing of these bodies
can be found at www.iso.org.
iv © ISO 2016 – All rights reserved

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SIST EN ISO 15012-4:2016
ISO 15012-4:2016(E)

Introduction
Welding and allied processes generate fumes and gases which, if inhaled, can be harmful to human
health. Therefore, control of the fumes and gases generated is to be exercised to minimize worker
exposure.
The most effective method of control is to capture the fumes and gases close to their source before they
enter a worker’s breathing zone or the general workplace environment.
Ventilation equipment used to capture the fumes and gases is to be fit for purpose because inefficient
capture could result in high exposure and can be detrimental to workers’ health. It is important
therefore that it adheres to defined manufacturing, materials and design requirements and gives
warning of malfunction.
This part of ISO 15012 defines the general requirements that are necessary for ventilation equipment
to maintain exposure to fumes at acceptable levels.
This part of ISO 15012 is a type-B standard as stated in ISO 12100.
This part of ISO 15012 is of relevance, in particular, for the following stakeholder groups representing
the market players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organizations, market surveillance, etc.).
Others can be affected by the level of machinery safety achieved with the means of this part of ISO 15012
by the above-mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (e.g. trade unions, organizations for people with special needs);
— service providers, e.g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting
process of this part of ISO 15012.
In addition, this part of ISO 15012 is intended for standardization bodies elaborating type-C standards.
The requirements of this part of ISO 15012 can be supplemented or modified by a type-C standard.
For machines which are covered by the scope of a type-C standard and which have been designed and
built according to the requirements of that standard, the requirements of that type-C standard take
precedence.
© ISO 2016 – All rights reserved v

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SIST EN ISO 15012-4:2016

---------------------- Page: 12 ----------------------

SIST EN ISO 15012-4:2016
INTERNATIONAL STANDARD ISO 15012-4:2016(E)
Health and safety in welding and allied processes —
Equipment for capture and separation of welding fume —
Part 4:
General requirements
1 Scope
This part of ISO 15012 defines the general requirements for ventilation equipment used to control
exposure to fumes generated by welding and allied processes. It applies to the design and manufacture
of all parts of the equipment including hoods, ducting, filter units, air movers, systems that inform of
unsafe operation and workplace practices to ensure safe working with regard to exposure.
Significant hazards are listed in Clause 4. It does not cover electrical, mechanical and pneumatic
hazards.
This part of ISO 15012 is applicable to the following:
— local exhaust ventilation systems (LEV);
— mobile and stationary equipment.
This part of ISO 15012 is not applicable to the following:
— general ventilation, air make up or air movement systems;
— air conditioning systems;
— separation of gases generated by or used by welding and allied processes;
— LEV used for welding and allied processes that generate reactive potentially explosive particles and
atmospheres;
— grinding dust.
This part of ISO 15012 applies to systems designed and manufactured after its publication.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 15012-1:2013, Health and safety in welding and allied processes — Equipment for capture and
separation of welding fume — Part 1: Requirements for testing and marking of separation efficiency
ISO 15012-2, Health and safety in welding and allied processes — Requirements, testing and marking of
equipment for air filtration — Part 2: Determination of the minimum air volume flow rate of captor hoods
and nozzles
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-gun welding fume
extraction
© ISO 2016 – All rights reserved 1

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SIST EN ISO 15012-4:2016
ISO 15012-4:2016(E)

IEC 60204-1:2005, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
IEC 60335-2-69, Household and similar electrical appliances — Safety — Part 2-69: Particular requirements
for wet and dry vacuum cleaners, including power brush, for commercial use
IEC 60695-2-12, Fire hazard testing — Part 2-12: Glowing/hot-wire based test methods — Glow-wire
flammability index (GWFI) test method for materials
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12100 and the following apply.
3.1
welding fume separation equipment
air filtration equipment, the purpose of which is to separate particles generated by welding and allied
processes from workplace air
3.2
filter cleaning system
system designed to clean the filter of welding fume separation equipment in order to restore the air
flow rate through the filter when it is reduced by an accumulation of welding fume particles
3.3
on-line filter cleaning system
filter cleaning system operating while welding fume separation equipment is working
3.4
off-line filter cleaning system
filter cleaning system operating after the air mover of the filtration equipment is switched off
3.5
separation efficiency by mass
ratio of the mass of particles retained by welding fume separation equipment to the mass of particles
entering the equipment during a given period
Note 1 to entry: General information on test methods for determination of separation efficiency is described in
EN 1093-6 and EN 1093-7.
3.6
emission rate
mass of the particles emitted by the welding fume source per time
Note 1 to entry: Emission rate is expressed in milligrams per second.
3.7
local exhaust ventilation
LEV
use of extraction to remove contaminated air at or near to its source
3.8
spark arrestor
device, normally positioned at the intake of welding fume separation equipment, used to prevent the
damaging impact of sparks and large particles on filter media
Note 1 to entry: Examples of spark arrestors are cyclones, spin separators, baffles or sieves. A spark arrestor
may be designed to also protect against flame damage.
2 © ISO 2016 – All rights reserved

---------------------- Page: 14 ----------------------

SIST EN ISO 15012-4:2016
ISO 15012-4:2016(E)

3.9 Extraction device
3.9.1
captor hood
equipment (movable or fixed) that generates sufficient air velocity at the source to capture and draw in
the contaminated air
3.9.2
receiving hood
passive equipment (movable or fixed), normally positioned above a hot process, where the contaminated
air is propelled into it by process-induced air movement
3.9.3
enclosure
chamber
fully or partially enclosed space where the process takes place, designed to contain and prevent the
escape of hazardous substances into the workshop air
3.10
welding fume
airborne particles generated during welding
4 Significant hazards
Exposure to fumes and gases generated by welding and allied processes can be detrimental to health.
Control of exposure can usually be achieved using ventilation equipment but any failure of this
equipment, such as poor design and the use of parts made of unsuitable materials, can result in reduced
extraction efficiency and hence over exposure and ill health.
Common health effects include respiratory disease, but exposure to carcinogenic substances during the
welding of alloyed materials can occur and shall be considered.
The requirements of the ventilation equipment are dependent on the level of control necessary.
5 Requirements and verifications
5.1 General
Machinery shall comply with the safety requirements and/or protective/risk reduction measures in
Clause 5. In addition, the machine shall be designed according to the principles of ISO 12100 for relevant
but not significant hazards which are not dealt with by this part of ISO 15012.
5.2 Welding fume separation equipment
All parts and materials used in the manufacture of welding fume ventilation equipment shall withstand
the conditions (thermal, mechanical, UV radiation) present in the environment in which they are
intended to be used.
Verification shall be performed by examining the manufacturer’s datasheets, the instruction manual,
and by referring to the manufacturer’s long-term experience with respective devices.
© ISO 2016 – All rights reserved 3

---------------------- Page: 15 ----------------------

SIST EN ISO 15012-4:2016
ISO 15012-4:2016(E)

5.3 Extraction devices
5.3.1 General
Non-metallic hoods shall be made of materials of low flammability. Verification shall be performed by
examining compliance with the glow-wire end product test GWEPT: 550 according to IEC 60695-2-12
(glow-wire test temperature of 550 °C).
5.3.2 Captor hoods
Captor hoods shall comply with the requirements of ISO 15012-2.
5.3.3 Receiving hoods
An air volume flow rate sufficient to remove all the fumes received shall be employed.
NOTE 1 The air volume flow rate required depends on the thermal flow generated by the welding process, the
vertical distance between fume source and hood, and the dimensions of the receiving hood.
Verification that no fume escapes shall be performed qualitatively by visual inspection using a welding
fume source. See also Annex A.
NOTE 2 A possible method for visual inspection is using a dust lamp (Tyndall effect) under worst case welding
conditions.
5.3.4 Enclosures (chambers)
During fume generation and for a pre-determined clearance period afterwards, there shall be an inflow
of air through all openings sufficient to prevent any escape of fumes to the external environment.
Verification that no fume escapes shall be performed qualitatively by visual inspection with the welding
process operating. The required flow rate shall be recorded. See also Annex A.
NOTE 1 The flow rate can be different for different welding parameter/material combinations.
NOTE 2 A possible method for visual inspection is using a dust lamp (Tyndall effect) under worst case welding
conditions.
5.3.5 On-gun extraction devices
On-gun extraction devices shall comply with ISO 15012-3.
5.4 Flexible arms, hoses and hoods
5.4.1 Movement of flexible arms
It shall be possible (see Figure 1) to move a flexible arm in any direction using a force not exceeding
60 N at the handhold of the hood:
a) with the arm at 70 % of its maximum range;
b) at a point c, 1 300 mm ± 100 mm above ground level;
c) in the directions shown in Figure 1, over a range that is 10 % of the maximum range. The movement
in the Z-direction may follow an arc with radius a.
NOTE 1 If flexible arms do not fulfil the requirements, risk of incorrect use or non-use will increase because of
ergonomic reasons.
NOTE 2 The handhold is the point on the hood intended to be touched for movement.
4 © ISO 2016 – All rights reserved

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SIST EN ISO 15012-4:2016
ISO 15012-4:2016(E)

The arm shall retain their position over the entire operating range after the force has been removed.
Verification that the arm is easily movable shall be achieved by measurement of forces and that it
retains its position by visual inspection.
Key
a
70 % of the maximum range.
b
Starting point of movement.
c
Point of force measurement.
Figure 1 — Example of a moving force test setup
5.4.2 Hoses
Non-metallic parts shall be made of materials of low flammability.
Verification shall be performed by examining compliance with GWEPT: 550 according to
IEC 60695-2-12 (glow-wire test temperature of 550 °C).
NOTE The use of materials of higher flammability can result in damage to the hose leading to reduced
airflow at the extraction point and hence poor extraction efficiency.
5.5 Ducting properties
The ducting shall
a) allow access for inspection and maintenance (e.g. hatches),
b) be sized, by calculation, to achieve a sufficient air velocity to minimize sedimentation, and
c) be made of metal or of materials of low flammability.
© ISO 2016 – All rights reserved 5

---------------------- Page: 17 ----------------------

SIST EN ISO 15012-4:2016
ISO 15012-4:2016(E)

NOTE 1 For welding and allied processes, an air velocity between 10 m/s and 15 m/s in the duct is usually
considered to be sufficient
...

SLOVENSKI STANDARD
oSIST prEN ISO 15012-4:2013
01-december-2013
9DUQRVWLQ]GUDYMHSULYDUMHQMXLQVRURGQLKSRVWRSNLK2SUHPD]D]DMHPLQ
ORþHYDQMHYDULOQHJDGLPDGHO=DKWHYH]DNRQVWUXLUDQMH,62',6
Health and safety in welding and allied processes - Equipment for capture and
separation of welding fume - Part 4: Design requirements (ISO/DIS 15012-4:2013)
Arbeits- und Gesundheitsschutz beim Schweißen und bei verwandten Prozessen -
Einrichtungen zum Erfassen und Abscheiden von Schweißrauch - Teil 4:
Gestaltungsanforderungen (ISO/DIS 15012-4:2013)
Hygiène et sécurité en soudage et techniques connexes - Exigences, essais et
marquage des équipements de filtration d'air - Partie 4: Exigences générales (ISO/DIS
15012-4:2013)
Ta slovenski standard je istoveten z: prEN ISO 15012-4
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
oSIST prEN ISO 15012-4:2013 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 15012-4:2013

---------------------- Page: 2 ----------------------
oSIST prEN ISO 15012-4:2013
DRAFT INTERNATIONAL STANDARD
ISO/DIS 15012-4
ISO/TC 44/SC 9 Secretariat: BSI
Voting begins on: Voting terminates on:
2013-09-05 2014-02-05
Health and safety in welding and allied processes —
Equipment for capture and separation of welding fume —
Part 4:
Design requirements
Hygiène et sécurité en soudage et techniques connexes — Exigences, essais et marquage des équipements
de filtration d’air —
Partie 4: Exigences générales
ICS: 25.160.30
ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for
Standardization (ISO), and processed under the ISO lead mode of collaboration
as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member
bodies for a parallel five month enquiry.
Should this draft be accepted, a final draft, established on the basis of comments
received, will be submitted to a parallel two-month approval vote in ISO and
THIS DOCUMENT IS A DRAFT CIRCULATED
formal vote in CEN.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
To expedite distribution, this document is circulated as received from the
IN ADDITION TO THEIR EVALUATION AS
committee secretariat. ISO Central Secretariat work of editing and text
BEING ACCEPTABLE FOR INDUSTRIAL,
composition will be undertaken at publication stage.
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 15012-4:2013(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 2013

---------------------- Page: 3 ----------------------
oSIST prEN ISO 15012-4:2013
ISO/DIS 15012-4:2013(E)

Copyright notice
This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as
permitted under the applicable laws of the user’s country, neither this ISO draft nor any extract
from it may be reproduced, stored in a retrieval system or transmitted in any form or by any means,
electronic, photocopying, recording or otherwise, without prior written permission being secured.
Requests for permission to reproduce should be addressed to either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.
ii © ISO 2013 – All rights reserved

---------------------- Page: 4 ----------------------
oSIST prEN ISO 15012-4:2013
ISO/DIS 15012-4
Contents Page
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
4 Significant Hazards . 3
5 Requirements and verifications . 3
5.1 Welding fume separation equipment . 3
5.2 Capture Devices . 4
5.3 Flexible arms, hoses and cantilevered hoods . 5
5.4 Ducting properties . 6
5.5 Preseparators . 6
5.6 Separation efficiency . 6
5.7 Filter cleaning system . 7
5.8 Filter changing . 7
5.9 Waste handling . 7
5.10 Air mover . 7
5.11 Signals/indicators . 8
Conformity shall be checked by simulating a malfunction in order to test the function of
the warning signal. . 9
5.12 Exhaust and cooling air . 9
6 Instructions for use . 9
7 Marking . 9
Bibliography . 10

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oSIST prEN ISO 15012-4:2013
ISO/DIS 15012-4
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 15012-4 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee
SC 9 and by Technical Committee CEN/TC 121, Welding in collaboration.
ISO 15012 consists of the following parts, under the general title Health and safety in welding and allied
processes — Equipment for capture and separation of welding fume:
 Part 1: Requirements, testing and marking of separation efficiency
 Part 2: Determination of the minimum air volume flow rate of captor hoods and nozzles
1)
 Part 3: Determination of the capture efficiency of on-gun welding fume extraction device
 Part 4: Design requirements

1) Under development
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oSIST prEN ISO 15012-4:2013
ISO/DIS 15012-4
Introduction
During the preparation of ISO 15012-1 to -3 it became clear, that some general requirements are essential for
the proper operation of welding fume separation equipment. Therefore this part of ISO 15012 was created.
Welding and allied processes generate fume and gases, which, if inhaled, can be harmful to human health.
The use of a local exhaust ventilation system (LEV) can remove these harmful from the welder's breathing
zone.
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oSIST prEN ISO 15012-4:2013

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oSIST prEN ISO 15012-4:2013
DRAFT INTERNATIONAL STANDARD ISO/DIS 15012-4

Health and safety in welding and allied processes — Equipment
for capture and separation of welding fume — Part 4: General
requirements
1 Scope
Equipment for capture and separation of welding fumes like local exhaust ventilation systems (LEV) or
ventilated enclosures for extracting welding fumes are safety components. In case of malfunction it may cause
hazards to the workers’ health.
Equipment for capture and separation of welding fume consists of capture elements, pipes, filter units and air
movers. The dimensioning of each has influence on the function of the whole system. This shall be considered
by the designer.
This International Standard specifies the requirements on equipment for capture and separation of welding
fumes to fulfil the safety functions. This equipment can be a LEV or enclosure. This standard does not cover
basic safety aspects for the device as machinery like electrical, mechanical and pneumatic hazards.
This standard covers:

 LEV (local exhaust ventilation systems)
 Enclosures which are not accessible for persons when they are in use
 Mobile and stationary equipment
This standard does not cover:

 General ventilation, air make-up, or air movement systems
 Air conditioning systems
 Separation of gases generated by or used for welding processes
 LEV used for welding and allied processes that generate reactive, potentially explosive particles and
atmospheres
This standard applies to systems designed after the date of its publication.

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oSIST prEN ISO 15012-4:2013
ISO/DIS 15012-4
2 Normative references
The following referenced documents are indispensable for the application 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 13849, Safety of machinery - Safety-related parts of control systems - Part 1: General principles for
design
ISO 15012-1, Health and safety in welding and allied processes — Requirements, testing and marking of
equipment for air filtration — Part 1: Requirements, testing and marking of separation efficiency
ISO 15012-2, Health and safety in welding and allied processes — Requirements, testing and marking of
equipment for air filtration — Part 2: Determination of the minimum air volume flow rate of captor hoods and
nozzles
IEC 60695-2-11, Fire hazard testing — Part 2-11: Glowing/hot-wire based test methods — Glow-wire
flammability test method for end-products
IEC 60335-2-69, Household and similar electrical appliances — Safety — Part 2-69: Particular requirements
for wet and dry vacuum cleaners, including power brush, for commercial use
3 Terms and definitions
3.1
welding fume separation equipment
air filtration equipment, the purpose of which is to separate particles generated by welding and allied
processes from workplace air
3.2
filter cleaning system
system designed to clean the filter of welding fume separation equipment in order to restore the air flow rate
through the filter when it is reduced by an accumulation of welding fume particles
3.3
on-line filter cleaning system
filter cleaning system operating while welding fume separation equipment is working
3.4
off-line filter cleaning system
filter cleaning system operating after the fan of the filtration equipment is switched off
3.5
separation efficiency by mass
ratio of the mass of particles retained by welding fume separation equipment to the mass of particles entering
the equipment during a given period
Note 1 to entry General information on test methods for determination of separation efficiency is described in
EN 1093-6 and EN 1093-7.
3.6
emission rate
mass of the particles emitted by the welding fume source per time
Note 1 to entry: Emission rate is expressed in milligrams per second.
3.7
local exhaust ventilation (LEV)
use of extraction to remove contaminated air at or near to its source
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oSIST prEN ISO 15012-4:2013
ISO/DIS 15012-4
3.8
preseparator
device, normally positioned at the intake of welding fume separation equipment, used to prevent the damaging
impact of sparks and large particles on filter media
Note 1 to entry Examples of preseparators are a cyclone, spin separator, baffle or sieve.
Note 2 to entry A preseperator may be designed to also protect against flame damage.
3.9
fixed hood
immovable equipment, used to capture emissions of airborne hazardous substances
3.10
cantilevered hood
movable equipment, used to capture emissions of airborne hazardous substances, connected to welding fume
separation equipment or to fixed extraction ducts by a flexible tube
3.11
receiving hood
fixed installed device for collecting hazardous substances, normally positioned above a process where
hazardous substances were emitted
Note 1 to entry An example of a receiving hood is a chimney stack installed above a robot cell bordered by a “curtain
chamber” and used as an enclosure.
3.12
enclosure (chamber)
closed space, covering a process emitting hazardous substances, to prevent the escape of hazardous
substances from their source into the workshop air
4 Significant Hazards
Welding processes generate fumes and gases, which may be risks for welders when inhaled. These
hazardous substances shall be extracted by welding fume separation equipment. A failure of the device can
result in the endangering of the welders and other employees in the welding shop by these substances.
Welding fumes have damaging effects to respiratory system and lung and can be toxic.
Welding of alloyed steel can emit additional carcinogenic substances e.g. hexavalent chromium compounds or
nickel oxide.
Requirements for the used equipment are dependent on the hazard of the expected substances.

5 Requirements and verifications
5.1 Welding fume separation equipment
All parts and materials shall resist the working conditions defined by the manufacturer during the intended use
e.g. thermal, mechanical, and UV-radiation. This can be achieved by considering the properties of the
materials used or by referring to long term experience with respective devices.
Conformity shall be checked by referencing the manufacturer‘s datasheets.
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oSIST prEN ISO 150
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