SIST EN ISO 15012-1:2005

SLOVENSKI STANDARD
SIST EN ISO 15012-1:2005
01-marec-2005
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Health and safety in welding and allied processes - Requirements testing and marking of
equipment for air filtration - Part 1: Testing of the separation efficiency for welding fume
(ISO 15012-1:2004)
Arbeits- und Gesundheitsschutz beim Schweißen und bei verwandten Prozessen -
Anforderungen, Prüfung und Kennzeichnung von Luftreinigungssystemen - Teil 1:
Bestimmen des Abscheidegrades für Schweißrauch (ISO 15012-1:2004)
Hygiene et sécurité en soudage et techniques connexes - Exigences, essais et
marquage des équipements de filtration d'air - Partie 1: Essai de l'efficacité de la
séparation des fumées de soudage (ISO 15012-1:2004)
Ta slovenski standard je istoveten z: EN ISO 15012-1:2004
ICS:
13.040.40 (PLVLMHQHSUHPLþQLKYLURY Stationary source emissions
25.160.10 Varilni postopki in varjenje Welding processes
SIST EN ISO 15012-1:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 15012-1:2005

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SIST EN ISO 15012-1:2005
EUROPEAN STANDARD
EN ISO 15012-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2004
ICS 13.040.40; 25.160.10
English version
Health and safety in welding and allied processes -
Requirements testing and marking of equipment for air filtration -
Part 1: Testing of the separation efficiency for welding fume
(ISO 15012-1:2004)
Hygiène et sécurité en soudage et techniques connexes - Arbeits- und Gesundheitsschutz beim Schweißen und bei
Exigences, essais et marquage des équipements de verwandten Prozessen - Anforderungen, Prüfung und
filtration d'air - Partie 1: Essai de l'efficacité de la Kennzeichnung von Luftreinigungssystemen - Teil 1:
séparation des fumées de soudage (ISO 15012-1:2004) Bestimmen des Abscheidegrades für Schweißrauch (ISO
15012-1:2004)
This European Standard was approved by CEN on 4 November 2004.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15012-1:2004: E
worldwide for CEN national Members.

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SIST EN ISO 15012-1:2005
EN ISO 15012-1:2004 (E)
Contents           page
Foreword.3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 List of significant hazards .5
5 Safety requirements and/or measures .5
5.1 Preseparator.5
5.2 Emission of particles from welding fume separation equipment.5
5.3 Emission of particles during change of separation elements .6
5.4 System for waste management.6
5.5 Filter cleaning system .7
5.6 Control units/indicators .7
5.7 Exhaust and cooling air .7
6 Verification of safety requirements and/or measures.8
6.1 Testing of the preseparator .8
6.2 Testing of the separation efficiency .8
6.3 Testing for emission of particles during change of separation elements.12
6.4 Testing of the system for waste management.12
6.5 Testing of the filter cleaning system .12
6.6 Examination of the control units/indicators .12
6.7 Testing of the air velocities of the exhaust and cooling air .13
7 Information for use .14
7.1 General.14
7.2 Accompanying documents (in particular: Instruction handbook) .14
8 Marking .14
9 Test report .14
Annex A (normative) Labels for welding fume separation equipment.16
Annex B (informative) Statistical interpretation of the test results - Estimation of the mean -
Confidence interval (according to ISO 2602:1980).17
Annex C (informative) Welding fume source for single work stations .19
Annex D (informative) Welding fume source for single and/or several work stations.21
Annex E (informative) Test cabin for a single work station .24
Bibliography .25

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SIST EN ISO 15012-1:2005
EN ISO 15012-1:2004 (E)
Foreword
This document (EN ISO 15012-1:2004) has been prepared by Technical Committee CEN/TC 121 "Welding", the
secretariat of which is held by DIN, in collaboration with Technical Committee ISO/TC 44 "Welding and allied
processes".
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 June 2005, and conflicting national standards shall be withdrawn at the latest by
June 2005.
This document includes a Bibliography.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

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SIST EN ISO 15012-1:2005
EN ISO 15012-1:2004 (E)
1 Scope
This document deals with the significant hazards caused by the emission of welding fume particles from welding
fume separation equipment operated according to its intended use and under the conditions foreseen by the
manufacturer.
This document specifies safety requirements concerning the separation of welding fumes and describes a method
for determining the particle separation efficiency of welding fume separation equipment.
This document does not deal with:
 the hazards caused by gases emitted by welding, cutting and allied processes or by the welding fume
separation equipment itself;
 the hazards caused by the noise and vibrations of the welding fume separation equipment or
 other fundamental aspects of safety technology, such as electrical, mechanical and pneumatical safety,
maintenance, etc.
This document applies to equipment that is manufactured after the issue of this document.
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.
EN 842, Safety of machinery - Visual danger signals - General requirements, design and testing.
EN 1070:1998, Safety of machinery – Terminology.
EN 1093-6, Safety of machinery - Evaluation of the emission of airborne hazardous substances - Part 6: Separation
efficiency by mass, unducted outlet.
EN 1093-7, Safety of machinery - Evaluation of the emission of airborne hazardous substances - Part 7: Separation
efficiency by mass, ducted outlet.
EN ISO 12100-2:2003, Safety of machinery - Basic concepts, general principles for design - Part 2: Technical
principles (ISO 12100-2:2003)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1070:1998 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 that operates while welding fume separation equipment is working
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SIST EN ISO 15012-1:2005
EN ISO 15012-1:2004 (E)
3.4
off-line filter cleaning system
filter cleaning system that is operated 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 (see also EN 1093-6 and EN 1093-7)
3.6
emission rate
mass of the particles emitted by the welding fume source per unit of time, in mg/s (see Annexes C and D).
3.7
preseparators
capture devices with built-in closed-meshed sieves or spark arrestors
4 List of significant hazards
This clause contains the significant hazards dealt with in this document.
Table 1 — List of hazards, risk assessment, measures for reduction
Hazard Hazardous Measure Clause Verification
situation
Welding fume welding fume separation of 6.2 testing of the
emission emission with welding fumes separation
separated air efficiency
5 Safety requirements and/or measures
5.1 Preseparator
The welding fume separation equipment or the exhaust system shall be designed to protect the separation unit and
shall prevent damage to the filter caused by the impact of large, hot and/or abrasive particles.
5.2 Emission of particles from welding fume separation equipment
5.2.1 Welding fume separation efficiency
Welding fume separation equipment shall have a separation efficiency of at least 95 % and shall be assigned to a
welding fume separation class using the classification system given in Table 2. The welding fume classes differ in
the requirements for the separation efficiency based on the state of the art.
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SIST EN ISO 15012-1:2005
EN ISO 15012-1:2004 (E)

Table 2 — Welding fume classes
Welding fume class Separation efficiency (%) Recommended for the separation of particles generated by
welding of:
W 1 unalloyed and low-alloy steel, i.e. steel with a very low nickel
≥ 95
and chromium content
W 2 as above and alloyed steel, i.e. steel with a nickel and
≥ 98
chromium content ≤ 30 %
W 3 as above and high-alloy steel
≥ 99
NOTE The welding fume classes are only intended to provide guidance on the suitability of a given unit when considered in
combination with:
 the welding location (e.g., a confined space or open workshop);
 the fume emission rate;
 the toxic elements present in the fume;
 current legal requirements; and
 the capture efficiency.
5.2.2 Marking of welding fume separation equipment
The manufacturer shall mark the welding fume separation equipment to indicate the welding fume class to which it
has been assigned using labels conforming to the specifications given in Annex A. The marking shall be permanent
and remain legible throughout the expected lifetime of the equipment.
5.3 Emission of particles during change of separation elements
Welding fume separation equipment shall be designed to minimise the emission of the collected welding fume
particles during the changing of the separation elements.
5.4 System for waste management
5.4.1 Particles collected by the welding fume separation equipment shall be removed from the separation
elements and disposed of in a manner that minimises their emission.
5.4.2 If the collected welding fume particles are disposed of in containers or bags, these shall be able to
withstand the stresses of transportation, even when filled to their maximum capacity, and they shall be tightly
sealed in a manner that will ensure that there is no possibility of emission of the collected particles.
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SIST EN ISO 15012-1:2005
EN ISO 15012-1:2004 (E)
5.5 Filter cleaning system
5.5.1 For welding fume separation equipment with a filter cleaning system, the filter cleaning system shall
maintain the performance of the equipment so that it continues to meet the separation efficiency requirement for
the welding fume class into which it is placed (see 5.2).
5.5.2 Cleaning of the separation elements shall not result in emission of welding fume particles.
5.6 Control units/indicators
5.6.1 General
Welding fume separation equipment shall be fitted with control units or indicators that warn of or prevent abnormal
operation conditions, as described in 5.6.2 to 5.6.5.
Acoustic warning signals shall work within an audio-frequency between 500 Hz and 3000 Hz and have a pulse time
between 0,5 s and 5 s. The A-weighted sound pressure level shall be between 15 dB and 30 dB higher than the
1 m-surface sound pressure level of the welding fume separation equipment (see EN 457).
Visual warning signals shall work with a pulse time between 0,5 s and 5 s, emitting yellow or yellow-orange light.
The warning signals shall comply with the requirements of EN 842.
5.6.2 Direction of rotation of the fan
Mobile welding fume separation equipment operated with three-phase electrical motors shall be marked to indicate
the correct direction of rotation of the fan.
5.6.3 Prevention of reversed air flow
If the consequence of a ”wrong“ direction of rotation is a reversed air flow, mobile welding fume separation
equipment shall be fitted with equipment (e.g. a check valve or a damper) that prevents the reversal of air flow and
an emission of collected welding fume particles.
5.6.4 Electrostatic separation systems
Separation equipment with an electrostatic separation system shall be fitted with a device that indicates if abnormal
electrical properties occur.
5.6.5 Mechanical separation systems
Separation equipment with a mechanical separation system - even a system that services several work stations -
shall be fitted with a device that indicates if a high pressure drop, exceeding the manufacturer’s recommendation,
occurs.
5.7 Exhaust and cooling air
Mobile welding fume separation equipment shall be positioned so that the exhaust and the cooling air of the motor
do not blow in the direction of any persons working in the vicinity of the equipment. They also shall not unduly
disturb dust settled on the floor and/or on walls. The velocities of the exhaust and of the cooling air shall not exceed
1 m/s at a distance of 1,5 m around the welding fume separator, between a lower measurement plane at a height of
50 mm above the floor level and an upper measurement plane at a height of 2 m above the floor level (see
Figure 4).
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SIST EN ISO 15012-1:2005
EN ISO 15012-1:2004 (E)
6 Verification of safety requirements and/or measures
6.1 Testing of the preseparator
Check compliance with the requirements of 5.1 by inspection.
6.2 Testing of the separation efficiency
6.2.1 Principle
The method is based on the methods described in EN 1093-6 and EN 1093-7. The welding fume separation
equipment under test is operated under defined conditions, according to its intended use, and the mass flow rates
of welding fume in the upstream and downstream air are measured and used to determine the separation efficiency
of the equipment.
6.2.2 Welding fume source
For testing of welding fume separation equipment intended for single work stations, use a welding fume source with
an emission rate of 10 mg/s (suitable welding fume sources are described in Annex C or D).
For testing of welding fume separation equipment used to filter air from a number of work stations, use a welding
fume source with an emission rate equal to 10 mg/s multiplied by the number of work stations that are operated at
the same time (see Annex D).
6.2.3 Test rig or test arrangement
6.2.3.1 Selection of test rig or test arrangement
For welding fume separation equipment with unducted outlet, carry out the test of separation efficiency using a test
rig as described in Figure 1.
For welding fume separation equipment with a ducted outlet, carry out the test of separation efficiency using a test
rig as described in Figure 1 or using a test arrangement as described in Figure 2. However, if the filter is working
with internal overpressure, leak test the welding fume separation equipment before testing it or test it using a test
rig as described in Figure 1.
6.2.3.2 Test rig for determination for welding fume separation equipment with an unducted outlet
The test rig consists of a closed test cabin as an enclosure for the welding fume separation equipment under test,
connected to the welding fume source via an upstream measurement duct. The cabin is connected to a
downstream measurement duct, followed up by an optional air mover to keep a small overpressure within the cabin
to prevent the measurements from being influenced by leakages (see Figure 1). The outlet air flow rate in the
downstream measurement duct shall be at least 95 % and shall not exceed 100 % of the inlet air flow rate. If
compressed air is used as the motive power this air flow rate shall be taken into consideration when determining
the outlet air flow rate.
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SIST EN ISO 15012-1:2005
EN ISO 15012-1:2004 (E)
7
> 5d > 3d
1 1
6
3
6
Q
in
4
> 5d > 3d
2 2
Q
out
5
1
8
2
9

Key
1 Welding fume source
2 Welding fume separation equipment
3 Cabin
4 Funnel
5 Air mover
6 Damper
7 Upstream measurement plane (concent
...