prEN ISO 29461-4

Air intake filter systems for rotary machinery - Part 4: Test methods for static filter systems in coastal and offshore environments (ISO/DIS 29461-4:2024)

The ISO 29461 standards specifies methods and procedures to determine the performance of particulate air filters used in air intake filter systems for rotary machinery such as gas turbines, compressors and other internal combustion engines.
The ISO 29461-4 of the standard specifies methods for performance testing of individual filter elements and of the complete filtration system used in Marine and offshore environments. This procedure is intended for filter elements and filter systems which operate at flow rated up to 8000 m3/h per filter element.

Ansaugfiltersysteme von Rotationsmaschinen - Prüfverfahren - Teil 4: Prüfverfahren für statische Filtersysteme in Meeres- und Offshore-Umgebungen (ISO/DIS 29461-4:2024)

Systèmes de filtration d'air d'admission pour machines tournantes - Partie 4: Méthodes d'essai des systèmes de filtration statique en milieu côtier et offshore (ISO/DIS 29461-4:2024)

Zračni filtrski sistemi rotacijskih strojev - 4. del: Preskusne metode za statične filtrirne sisteme v obalnih in priobalnih okoljih (ISO/DIS 29461-4:2024)

General Information

• Status: Not Published
• Publication Date: 03-Sep-2025
• ICS: 29.160.99 - Other standards related to rotating machinery
• Technical Committee: CEN/TC 195 - Air filters for general air cleaning
• Drafting Committee: CEN/TC 195 - Air filters for general air cleaning
• Current Stage: 4060 - Closure of enquiry - Enquiry
• Start Date: 01-May-2024
• Due Date: 25-Oct-2022
• Completion Date: 01-May-2024
• Ref Project: oSIST prEN ISO 29461-4:2024 - Air intake filter systems for rotary machinery - Part 4: Test methods for static filter systems in coastal and offshore environments (ISO/DIS 29461-4:2024)

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2024
Zračni filtrski sistemi rotacijskih strojev - 4. del: Preskusne metode za statične
filtrirne sisteme v obalnih in priobalnih okoljih (ISO/DIS 29461-4:2024)
Air intake filter systems for rotary machinery - Part 4: Test methods for static filter
systems in coastal and offshore environments (ISO/DIS 29461-4:2024)
Ansaugfiltersysteme von Rotationsmaschinen - Prüfverfahren - Teil 4: Prüfverfahren für
statische Filtersysteme in Meeres- und Offshore-Umgebungen (ISO/DIS 29461-4:2024)
Systèmes de filtration d'air d'admission pour machines tournantes - Partie 4: Méthodes
d'essai des systèmes de filtration statique en milieu côtier et offshore (ISO/DIS 29461-
4:2024)
Ta slovenski standard je istoveten z: prEN ISO 29461-4
ICS:
29.160.99 Drugi standardi v zvezi z Other standards related to
rotacijskimi stroji rotating machinery
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 29461-4
ISO/TC 142
Air intake filter systems for rotary
Secretariat: UNI
machinery —
Voting begins on:
Part 4: 2024-02-07
Test methods for static filter
Voting terminates on:
2024-05-01
systems in coastal and offshore
environments
Systèmes de filtration d'air d'admission pour machines
tournantes —
Partie 4: Méthodes d'essai des systèmes de filtration statique en
milieu côtier et offshore
ICS: 29.160.99
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
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Reference number
ISO/DIS 29461-4:2024(en)
DRAFT
ISO/DIS 29461-4:2024(en)
International
Standard
ISO/DIS 29461-4
ISO/TC 142
Air intake filter systems for rotary
Secretariat: UNI
machinery —
Voting begins on:
Part 4:
Test methods for static filter
Voting terminates on:
systems in coastal and offshore
environments
Systèmes de filtration d'air d'admission pour machines
tournantes —
Partie 4: Méthodes d'essai des systèmes de filtration statique en
milieu côtier et offshore
ICS: 29.160.99
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: [phone]
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PROVIDE SUPPORTING DOCUMENTATION.
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 29461-4:2023(en)
ii
ISO/DIS 29461-4:2023(en)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Air flows .2
3.2 Efficiencies .2
4 Symbols and abbreviated terms. 2
5 Description of test method . . 3
6 Test rig and equipment . 3
6.1 General .3
6.1.1 Test rig .3
6.2 Test duct .4
6.2.1 Test rig layout .4
6.2.2 Test air conditioning .4
6.2.3 Measurement of the air flow rate .5
6.2.4 Measurement of pressure drop .5
6.2.5 Aerosol mixing section.5
6.2.6 Measurement of temperature and relative humidity .5
6.3 Measurement equipment.5
6.3.1 Test rig instrumentation .5
6.3.2 Sodium Flame Photometer .5
6.4 Aerosol sampling .6
6.4.1 Sample probes.6
6.4.2 Sampling air flow .7
6.5 Aerosol generation .7
6.5.1 Salt generation.7
6.5.2 Aerosol injection .7
6.6 Water spray device .7
6.7 Water collection device .7
7 Qualification of test rig and apparatus . 7
7.1 Pressure system testing .7
7.1.1 Pressure system test protocol .7
7.1.2 Pressure system test results .7
7.2 Aerosol uniformity .8
7.2.1 Aerosol uniformity parameters .8
7.2.2 Aerosol uniformity protocol .8
7.2.3 Aerosol uniformity results .8
7.2.4 Water droplet size distributions .9
7.2.5 Water fog sedimentation check .9
8 Test conditions . 9
8.1 Test air .9
8.2 Test water . .9
9 Test method . 9
9.1 Stop criteria .9
9.2 Adjustment of the test air flow rate .10
9.3 Preparatory checks .10
9.3.1 Operational readiness of the measuring instruments .10
9.3.2 Zero level check measurement of the sodium flame photometer .10
9.3.3 Absolute pressure, temperature and relative humidity of the test air .10
9.3.4 Starting up the aerosol generator .10

iii
ISO/DIS 29461-4:2023
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