ISO 29042-5:2010

INTERNATIONAL ISO
STANDARD 29042-5
First edition
2010-03-15
Safety of machinery — Evaluation of the
emission of airborne hazardous
substances —
Part 5:
Test bench method for the measurement
of the separation efficiency by mass of
air cleaning systems with unducted outlet
Sécurité des machines — Évaluation de l'émission de substances
dangereuses véhiculées par l'air —
Partie 5: Méthode sur banc d'essai pour le mesurage de l'efficacité de
séparation massique des systèmes d'épuration d'air avec sortie libre

Reference number
©
ISO 2010
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ii © ISO 2010 – All rights reserved

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 29042-5 was prepared by Technical Committee ISO/TC 199, Safety of machinery.
ISO 29042 consists of the following parts, under the general title Safety of machinery — Evaluation of the
emission of airborne hazardous substances:
⎯ Part 1: Selection of test methods
⎯ Part 2: Tracer gas method for the measurement of the emission rate of a given pollutant
⎯ Part 3: Test bench method for the measurement of the emission rate of a given pollutant
⎯ Part 4: Tracer method for the measurement of the capture efficiency of an exhaust system
⎯ Part 5: Test bench method for the measurement of the separation efficiency by mass of air cleaning
systems with unducted outlet
⎯ Part 6: Test bench method for the measurement of the separation efficiency by mass of air cleaning
systems with ducted outlet
⎯ Part 7: Test bench method for the measurement of the pollutant concentration parameter
A room method for the measurement of the pollutant concentration parameter and a decontamination index
are to form the subjects of future parts 8 and 9.
Introduction
The structure of safety standards in the field of machinery is as follows:
a) type-A standards (basic safety standards) giving basic concepts, principles for design, and general
aspects that can be applied to all machinery;
b) type-B standards (generic safety standards) dealing with one safety aspect or one type of safeguard that
can be used across a wide range of machinery:
⎯ type-B1 standards on particular safety aspects (e.g. safety distances, surface temperature, noise);
⎯ type-B2 standards on safeguards (e.g. two-hand controls, interlocking devices, pressure sensitive
devices, guards);
c) type-C standards (machine safety standards) dealing with detailed safety requirements for a particular
machine or group of machines.
This part of ISO 29042 is a type-B standard as stated in ISO 12100.
The requirements of this document 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/TC 199 has a mandate in this area to produce type-A and type-B standards, which will allow verification
of conformity with the essential safety requirements.
ISO 29042-5 is based on EN 1093-6:1998, amended by Amendment 1:2008, published by the European
Committee for Standardization (CEN).
iv © ISO 2010 – All rights reserved

INTERNATIONAL STANDARD ISO 29042-5:2010(E)

Safety of machinery — Evaluation of the emission of airborne
hazardous substances —
Part 5:
Test bench method for the measurement of the separation
efficiency by mass of air cleaning systems with unducted outlet
1 Scope
This part of ISO 29042 specifies a test bench method for the measurement of the separation efficiency by
mass of an air cleaning system with an unducted outlet, operating under defined conditions. The method is
applicable to those systems that clean the air of aerosols (smoke, dust, fume, mist), vapour or gas.
Measurement of the separation efficiency by mass of an air cleaning system for an intended use can serve for
the
a) evaluation of the performance of the air cleaning system,
b) evaluation of the improvement of the air cleaning system,
c) comparison of air cleaning systems,
d) ranking of air cleaning systems according to their separation efficiency by mass, and
e) determination of the state of the art of air cleaning systems of the same intended use with respect to their
separation efficiency by mass.
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 12100, Safety of machinery — General principles for design — Risk assessment and risk reduction
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12100 and the following apply.
3.1
separation efficiency by mass
η
s
〈air cleaning system〉 for a given pollutant, the ratio of the mass of pollutant retained by the air cleaning system
(m ) to the mass of pollutant entering the air cleaning system (m ) during a given period
3 1
NOTE The separation efficiency of an air cleaning system as a percentage is expressed as follows:
m
η=× 100 (1)
s
m
4 Principle
The principle of the measurement method is to opera
...