ISO 29461-3:2024

Air intake filter systems for rotary machinery — Test methods — Part 3: Mechanical integrity of filter elements

This document specifies methods to determine the mechanical integrity of filters under defined conditions that can be encountered in abnormal operating environments. It describes the test methods for filter elements, independent of any ageing procedures like pulsing, loading, temperature cycles, wet conditions or others. The test procedure is intended for filters operating in the range of 0,24 m3/s (850 m3/h) up to 2,36 m3/s (8 500 m3/h). Filter elements with a lower efficiency than ISO T5 (ePM10) according to ISO 29461-1 are excluded. To ensure the comparability of the test results, only new filter elements or those loaded up to 625 Pa or maximum 800 Pa according to ISO 29461-1 are tested. This document does not describe a standardized method to measure the fractional or gravimetric efficiency. The efficiency of the filter element can be tested according to ISO 29461-1. The performance results obtained according to this document cannot be quantitatively applied (by themselves) to predict performance in real use.

Systèmes de filtration d'air d'admission pour machines tournantes — Méthodes d'essai — Partie 3: Intégrité mécanique des éléments filtrants

Le présent document spécifie des méthodes pour déterminer l’intégrité mécanique des filtres dans des conditions définies qui peuvent être rencontrées dans des environnements de fonctionnement anormaux. Il décrit les méthodes d'essai pour les éléments filtrants, indépendamment des modes opératoires de vieillissement telles que les jets, les chargements, les cycles de température, les conditions humides ou autres. Le mode opératoire d’essai est destiné aux filtres fonctionnent dans la plage de 0,24 m3/s (850 m3/h) à 2,36 m3/s (8 500 m3/h). Les éléments filtrants avec une efficacité inférieure à l’ISO T5 (ePM10) selon l’ISO 29461-1 sont exclus. Pour garantir la comparabilité des résultats d’essai, seuls les éléments filtrants neufs ou ceux chargés jusqu’à 625 Pa ou 800 Pa maximum selon l’ISO 29461-1 sont soumis à essai. Le présent document ne décrit pas de méthode normalisée pour mesurer l’efficacité spectrale ou gravimétrique. L’efficacité de l’élément filtrant peut être soumise à essai selon l’ISO 29461-1. Les résultats de performance obtenus selon le présent document ne peuvent pas être utilisés quantitativement (par eux-mêmes) pour prédire les performances en utilisation réelle.

General Information

• Status: Published
• Publication Date: 02-Jul-2024
• ICS: 29.160.99 - Other standards related to rotating machinery
• Technical Committee: ISO/TC 142 - Cleaning equipment for air and other gases
• Drafting Committee: ISO/TC 142/WG 9 - Particulate air filter intake systems for rotary machinery and stationary internal combustion engines
• Current Stage: 6060 - International Standard published
• Start Date: 03-Jul-2024
• Due Date: 19-Jan-2024
• Completion Date: 03-Jul-2024

Relations

• Consolidates: ISO 22834:2022 - Large yachts — Quality assessment of life onboard — Stabilization and sea keeping
• Effective Date: 06-Jun-2022

Standards Content (Sample)

International
Standard
ISO 29461-3
First edition
Air intake filter systems for rotary
2024-07
machinery — Test methods —
Part 3:
Mechanical integrity of filter
elements
Systèmes de filtration d'air d'admission pour machines
tournantes — Méthodes d'essai —
Partie 3: Intégrité mécanique des éléments filtrants
Reference number
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Test parameter .2
3.2 Filter to be tested .2
3.3 Test duration .3
3.4 Test materials .3
4 Test rig, conditions and equipment . 3
4.1 Test conditions .3
4.2 Test rig – General requirements .3
4.3 Camera .4
4.4 Differential pressure measurement .4
4.5 Flow measurement .4
4.6 Dust feeder .5
4.7 Water spraying nozzles (fogging nozzles) . .5
4.8 Final filter/coarse filter mat or grid .6
4.9 Temperature, relative humidity .6
5 Qualification of test rig and apparatus . 6
5.1 Pressure system test .6
5.2 Test rig — Pressure drop of test duct with no test device installed .6
5.3 Test rig — Pressure drop reference test .6
5.4 Summary of qualification requirements and schedule .6
6 Test materials . 7
6.1 Test dust .7
6.2 Water .7
6.3 Coarse filter .7
7 Test procedure . 7
7.1 General .7
7.2 Test result evaluation .8
7.2.1 General .8
7.2.2 Measurement of pressure drop .8
7.2.3 Visual inspection of filter .8
7.2.4 Visual inspection downstream of the test device .8
7.2.5 Final test in accordance with ISO 29461-1 .8
7.3 Test preparation .9
7.4 Determination of the initial loading concentration of test dust and water.9
7.5 Loading procedure .10
7.6 Fail/pass criteria .11
7.6.1 General .11
7.6.2 Release of parts .11
7.6.3 Pressure drop decrease .11
7.6.4 Visual inspection during test .11
7.6.5 Final test in accordance with ISO 29461-1 .11
8 Reporting results .12
8.1 General and descriptive information . 12
8.2 Test data and results . 13
8.3 Concluding statement .14
Annex A (normative) Wet burst testing.15
Annex B (informative) Test report example .16

iii
Bibliography .20

iv
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 142, Cleaning equipment for air and other gases,
in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 195,
Cleaning equipment for air and other gases, in accordance with the Agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 29461 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

v
Introduction
In rotating machinery applications, the filtering system, typically a set of
...

Norme
internationale
ISO 29461-3
Première édition
Systèmes de filtration d'air
2024-07
d'admission pour machines
tournantes — Méthodes d'essai —
Partie 3:
Intégrité mécanique des éléments
filtrants
Air intake filter systems for rotary machinery — Test methods —
Part 3: Mechanical integrity of filter elements
Numéro de référence
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2024
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: [phone]
E-mail: [e-mail]
Web: www.iso.org
Publié en Suisse
ii
Sommaire Page
Avant-propos .v
Introduction .vi
1 Domaine d'application . 1
2 Références normatives . 1
3 Termes et définitions . 1
3.1 Paramètre d’essai .2
3.2 Filtre à soumettre à essai .2
3.3 Durée de l’essai .3
3.4 Produits pour l’essai .3
4 Banc, conditions et équipement d’essai . . 3
4.1 Conditions d’essai . . .3
4.2 Banc d’essai – Exigences générales . .3
4.3 Caméra .4
4.4 Mesure de la pression différentielle .4
4.5 Mesurage du débit .5
4.6 Générateur de poussière .5
4.7 Buses de pulvérisation d’eau (buses de brumisation) .5
4.8 Filtre final/tapis ou grille de filtration grossier .6
4.9 Température, humidité relative .6
5 Qualification du banc d’essai et de l’appareillage . 6
5.1 Essai du système de pression .6
5.2 Banc d’essai — Perte de charge du conduit d’essai sans filtre d’essai installé .6
5.3 Banc d’essai — Essai de référence de perte de charge .6
5.4 Récapitulatif des exigences de qualification et du programme .7
6 Produits pour l’essai . 7
6.1 Poussière d’essai .7
6.2 Eau .7
6.3 Filtre grossier .7
7 Mode opératoire d’essai . 7
7.1 Généralités .7
7.2 Évaluation des résultats d’essai .8
7.2.1 Généralités .8
7.2.2 Mesurage de la perte de charge .8
7.2.3 Inspection visuelle du filtre .8
7.2.4 Inspection visuelle en aval du dispositif d’essai .8
7.2.5 Essai final conformément à l’ISO 29461-1 .9
7.3 Préparation de l’essai.9
7.4 Détermination de la concentration de chargement initiale de poussière et d’eau d’essai .10
7.5 Mode opératoire de chargement .10
7.6 Critères d’échec/de réussite .11
7.6.1 Généralités .11
7.6.2 Libération de parties .11
7.6.3 Diminution de perte de charge .11
7.6.4 Inspection visuelle pendant l’essai .11
7.6.5 Essai final conformément à l’ISO 29461-1 . 12
8 Présentation des résultats .13
8.1 Informations générales et descriptives . 13
8.2 Données et résultats d’essai .14
8.3 Énoncé de conclusion . 15
Annexe A (normative) Essai d’éclatement à l’état humide .16
Annexe B (informative) Exemple de rapport d’essai . 17

iii
Bibliographie .22

iv
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux
de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général
confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude a le droit de faire
partie du comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l'ISO participent également aux travaux. L'ISO collabore étroitement avec
la Commission électrotechnique internationale (IEC) en ce qui concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d'approbation requis pour les différents types de documents ISO. Le présent document a
été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir
www.iso.org/directives).
L’ISO attire l’attention sur le fait que la mise en application du présent document peut entraîner l’utilisation
d’un ou de plusieurs brevets. L’ISO ne prend pas position quant à la preuve, à la validité et à l’applicabilité de
tout droit de brevet revendiqué à cet égard. À la date de publication du présent document, l’ISO n'avait pas
reçu notification qu’un ou plusieurs brevets pouvaient être nécessaires à sa mise en application. Toutefois,
il y a lieu d’avertir les responsables de la mise en application du présent document que des informations
plus récentes sont susceptibles de figurer dans la base de données de brevets, disponible à l'adresse
www.iso.org/brevets. L’ISO ne saurait être tenue pour responsable de ne pas avoir identifié tout ou partie de
tels droits de propriété.
Les appellations commerciales éventuellement mentionnées dans le présent document sont données pour
information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l'ISO liés à l'évaluation de la conformité, ou pour toute information au sujet de l'adhésion de
l'ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles techniques au
commerce (OTC), voir www.iso.org/avant-propos.
Le présent document a été élaboré par le comité technique ISO/TC 142, Séparateurs aérauliques, en
collaboration avec le comité technique CEN/TC 195, Filtres air pour la propreté de l'air, du Comité européen
de normalisation (CEN), conformément à l'accord de coopération technique entre l'ISO et le CEN (Accord de
Vienne).
Une liste de toutes les parties de la série ISO 29461 se trouve sur le site web de l’ISO.
Il convient que l’utilisateur adresse tout retour d’information ou toute question concernant le présent
document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits organismes se
trouve à l’adresse www.iso.org/fr/members.html.

v
Introduction
Dans les applications pour machines tourn
...

FINAL DRAFT
International
Standard
ISO/FDIS 29461-3
ISO/TC 142
Air intake filter systems for rotary
Secretariat: UNI
machinery — Test methods —
Voting begins on:
2024-01-29
Part 3:
Mechanical integrity of filter
Voting terminates on:
2024-03-25
elements
Systèmes de filtration d'air d'admission pour machines
tournantes — Méthodes d'essai —
Partie 3: Intégrité mécanique des éléments filtrants
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 SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/FDIS 29461-3:2024(en) © ISO 2024

FINAL DRAFT
ISO/FDIS 29461-3:2024(en)
International
Standard
ISO/FDIS 29461-3
ISO/TC 142
Air intake filter systems for rotary
Secretariat: UNI
machinery — Test methods —
Voting begins on:
Part 3:
Mechanical integrity of filter
Voting terminates on:
elements
Systèmes de filtration d'air d'admission pour machines
tournantes — Méthodes d'essai —
Partie 3: Intégrité mécanique des éléments filtrants
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 SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/FDIS 29461-3:2024(en) © ISO 2024

ii
ISO/FDIS 29461-3:2024(en)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Test parameter .2
3.2 Filter to be tested .2
3.3 Test duration .3
3.4 Test materials .3
4 Test rig, conditions and equipment . 3
4.1 Test conditions .3
4.2 Test rig – General requirements .3
4.3 Camera .4
4.4 Differential pressure measurement .4
4.5 Flow measurement .4
4.6 Dust feeder .5
4.7 Water spraying nozzles (fogging nozzles) . .5
4.8 Final filter/coarse filter mat or grid .6
4.9 Temperature, relative humidity .6
5 Qualification of test rig and apparatus . 6
5.1 Pressure system test .6
5.2 Test rig — Pressure drop of test duct with no test device installed .6
5.3 Test rig — Pressure drop reference test .6
5.4 Summary of qualification requirements and schedule .6
6 Test materials . 7
6.1 Test dust .7
6.2 Water .7
6.3 Coarse filter .7
7 Test procedure . 7
7.1 General .7
7.2 Test result evaluation .8
7.2.1 General .8
7.2.2 Measurement of pressure drop .8
7.2.3 Visual inspection of filter .8
7.2.4 Visual inspection downstream of the test device .8
7.2.5 Final test in accordance with ISO 29461-1 .8
7.3 Test preparation .9
7.4 Determination of the initial loading concentration of test dust and water.9
7.5 Loading procedure .10
7.6 Fail/pass criteria .11
7.6.1 General .11
7.6.2 Release of parts .11
7.6.3 Pressure drop decrease .11
7.6.4 Visual inspection during test .11
7.6.5 Final test in accordance with ISO 29461-1 .11
8 Reporting results .12
8.1 General and descriptive information . 12
8.2 Test data and results . 13
8.3 Concluding statement .14
Annex A (normative) Wet burst testing.15
Annex B (informative) Test report example .16

iii
ISO/FDIS 29461-3:2024(en)
Bibliography .20

iv
ISO/FDIS 29461-3:2024(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s
...

ISO/FDIS 29461-3:2023(E)
ISO /TC 142
Date: 2023-10-10
Secretariat: UNI
Date: 2024-01-10
Air intake filter systems for rotary machinery — Test methods
— —
Part 3:
Mechanical integrity of filter elements
Systèmes de filtration d'air d'admission pour machines tournantes — Méthodes d'essai —
Partie 3: Intégrité mécanique des éléments filtrants
FDIS stage
ISO/FDIS 29461-3:20232024(E)
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved
ii
ISO/FDIS 29461-3:20232024(E)
Contents
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Test parameter . 2
3.2 Filter to be tested . 2
3.3 Test duration. 3
3.4 Test materials . 3
4 Test rig, conditions and equipment . 3
4.1 Test conditions . 3
4.2 Test rig – General requirements . 3
4.3 Camera . 4
4.4 Differential pressure measurement . 5
4.5 Flow measurement . 5
4.6 Dust feeder . 5
4.7 Water spraying nozzles (fogging nozzles) . 6
4.8 Final filter/coarse filter mat or grid . 6
4.9 Temperature, relative humidity. 6
5 Qualification of test rig and apparatus . 6
5.1 Pressure system test . 6
5.2 Test rig — Pressure drop of test duct with no test device installed . 6
5.3 Test rig — Pressure drop reference test . 7
5.4 Summary of qualification requirements and schedule . 7
6 Test materials . 7
6.1 Test dust . 7
6.2 Water . 7
6.3 Coarse filter . 7
7 Test procedure . 7
7.1 General . 7
7.2 Test result evaluation . 8
7.2.1 General . 8
7.2.2 Measurement of pressure drop . 8
7.2.3 Visual inspection of filter . 8
7.2.4 Visual inspection downstream of the test device . 8
iii
ISO/FDIS 29461-3:20232024(E)
7.2.5 Final test in accordance with ISO 29461-1 . 9
7.3 Test preparation . 9
7.4 Determination of the initial loading concentration of test dust and water . 10
7.5 Loading procedure . 10
7.6 Fail/pass criteria . 11
7.6.1 General . 11
7.6.2 Release of parts . 11
7.6.3 Pressure drop decrease . 11
7.6.4 Visual inspection during test . 12
7.6.5 Final test in accordance with ISO 29461-1 . 12
8 Reporting results . 13
8.1 General and descriptive information . 13
8.2 Test data and results . 14
8.3 Concluding statement . 15
Annex A (normative) Wet burst testing . 16
A.1 General . 16
A.2 Preconditioning procedure . 16
A.3 Documentation . 16
Annex B (informative) Test report example . 17
Bibliography . 24

iv © ISO 2023 – All rights reserved
iv
ISO/FDIS 29461-3:20232024(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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of
(a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received notice
of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents.www.iso.org/patents. ISO shall not be held responsible for
identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the World
Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
Field Code Changed
This document was prepared by Technical Committee ISO/TC 142, Cleaning equipment for air and other
gases, in collaboration with the European Committee for Standardization (CEN) Technical Committee
CEN/TC 195, Cleaning equipment for air and other gases, in accordance with the Agreement on technical
cooperation between ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 29461 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
Field Code Changed
v
ISO/FDIS 29461-3:20232024(E)
Introduction
In rotating machinery applications, the filtering system, typically a set of filter elements arranged in a
suitable manner, is an important part of the whole turbine/compressor system. The development of
turbine machinery used for energy production or others has led to more sophisticated equipment and
therefore, the importance of effective protection of these systems has become more important in the
recent years. It is known that particulate contamination can deteriorate a turbine power system quite
substantially if not taken care of.
This process is often described as “erosion”, “fo
...