ISO 15665:2023

Acoustics — Acoustic insulation for pipes, valves and flanges

This document defines the acoustic performance of four classes (Classes A, B, C and D) of pipe insulation. It also defines a standardized test method for measuring the acoustic performance of any type of material system construction, thereby allowing existing and new insulation constructions to be rated against the four classes. Furthermore, this document presents some typical types of construction that would be expected to meet these acoustic performance classes. This document is applicable to the acoustic insulation of cylindrical steel pipes and to their piping components. It is valid for pipes up to 1 m in diameter and a minimum wall thickness of 4,2 mm for diameters below 300 mm, and 6,3 mm for diameters from 300 mm and above. It is not applicable to the acoustic insulation of rectangular ducting and vessels or machinery. This document covers both design and installation aspects of acoustic insulation and provides guidance to assist noise control engineers in determining the required class and extent of insulation needed for a particular application. It gives typical examples of construction methods, but the examples are for information only and not meant to be prescriptive. This document emphasises the aspects of acoustic insulation that are different from those of thermal insulation, serving to guide both the installer and the noise control engineer. Details of thermal insulation are beyond the scope of this document.

Acoustique — Isolation acoustique des tuyaux, clapets et brides

Le présent document définit les performances acoustiques de quatre classes (classes A, B, C et D) d'isolation de tuyaux. Il définit également une méthode d'essai normalisée pour mesurer les performances acoustiques de tout type de construction de système de matériau, permettant ainsi d'évaluer de nouvelles isolations et les isolations existantes par rapport aux quatre classes. En outre, le présent document décrit certains modes de construction types susceptibles de satisfaire à ces classes de performances acoustiques. Le présent document est applicable à l'isolation acoustique de tuyaux cylindriques en acier et de leurs composants de tuyauterie. Il est valable pour des tuyaux jusqu'à 1 m de diamètre et d'une épaisseur de paroi minimale de 4,2 mm, pour des diamètres inférieurs à 300 mm et de 6,3 mm, pour les diamètres supérieurs ou égaux à 300 mm. Il n'est pas applicable à l'isolation acoustique de conduits rectangulaires, ni à celle de réservoirs ou de machines. Le présent document traite de l'évaluation des performances d'isolation acoustique des tuyaux à la fois en phase de conception et sur des installations en exploitation. Il fournit des lignes directrices aux ingénieurs acousticiens pour déterminer la classe requise et l'étendue d'isolation nécessaire pour une application donnée. Il fournit des exemples types de méthodes de construction, ces exemples étant toutefois fournis à titre informatif uniquement et n'ont pas pour objet d'être normatifs. Le présent document précise les aspects de l'isolation acoustique qui diffèrent de ceux de l'isolation thermique, et sert de guide tant aux installateurs qu'aux ingénieurs acousticiens. Les détails afférents à l'isolation thermique sont exclus du domaine d'application du présent document.

General Information

• Status: Published
• Publication Date: 17-Dec-2023
• ICS: 17.140.20 - Noise emitted by machines and equipment
• ICS: 91.120.20 - Acoustics in building. Sound insulation
• Technical Committee: ISO/TC 43/SC 1 - Noise
• Drafting Committee: ISO/TC 43/SC 1/WG 66 - Revision of ISO 15665 Acoustic insulation of pipes, valves and flanges
• Current Stage: 6060 - International Standard published
• Start Date: 18-Dec-2023
• Due Date: 27-Aug-2023
• Completion Date: 18-Dec-2023

Relations

• Revises: ISO 15665:2003 - Acoustics — Acoustic insulation for pipes, valves and flanges
• Effective Date: 23-Apr-2020

Standards Content (Sample)

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 15665
ISO/TC 43/SC 1
Acoustics — Acoustic insulation for
Secretariat: DIN
pipes, valves and flanges
Voting begins on:
2023-09-18
Acoustique — Isolation acoustique des tuyaux, clapets et brides
Voting terminates on:
2023-11-13
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
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 15665:2023(E)
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. © ISO 2023

---------------------- Page: 1 ----------------------
ISO/FDIS 15665:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 15665
ISO/TC 43/SC 1
Acoustics — Acoustic insulation for
Secretariat: DIN
pipes, valves and flanges
Voting begins on:
Acoustique — Isolation acoustique des tuyaux, clapets et brides
Voting terminates on:
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
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.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 15665:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

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ISO/FDIS 15665:2023(E)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classes of acoustic insulation .3
5 Guidance to the reduction of noise from pipes . 6
5.1 Required insertion loss: design phase steps . 6
5.1.1 Determination of sound pressure levels . 6
5.1.2 Evaluation of sound pressure levels against limits . 7
5.1.3 Determination of sound power levels . 7
5.1.4 Contribution to noise in reverberant spaces or environmental noise . 8
5.2 Required insertion loss: operating plants . 8
5.3 Length of acoustic insulation . 9
5.4 Implications for piping design . 10
5.5 Derivation of overall
...

2023-07-24
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ISO/FDIS 15665:2023(E)
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ISO TC 43/SC 1/WG 66
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Secretariat: DIN
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Acoustics — Acoustic insulation for pipes, valves and flanges
Acoustique — Isolation acoustique des tuyaux, clapets et brides

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ISO/FDIS 15665:2023(E)
© ISO 2023
Formatted: Pattern: Clear
Formatted: Pattern: Clear
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.orgwww.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/FDIS 15665:2023(E)
Contents
Foreword . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classes of acoustic insulation . 3
5 Guidance to the reduction of noise from pipes . 8
5.1 Required insertion loss: design phase steps . 8
5.1.1 Determination of sound pressure levels . 8
5.1.2 Evaluation of sound pressure levels against limits . 8
5.1.3 Determination of sound power levels . 8
5.1.4 Contribution to noise in reverberant spaces or environmental noise . 9
5.2 Required insertion loss: operating plants . 10
5.3 Length of acoustic insulation . 10
5.4 Implications for piping design . 11
5.5 Derivation of overall noise reduction . 12
5.6 Typical noise reduction values . 14
6 Construction of typical acoustic insulation systems . 15
6.1 General . 15
6.2 Cladding . 15
6.2.1 General . 15
6.2.2 Materials for the outer layer . 15
6.2.3 Materials for an additional layer . 16
6.2.4 Vibro-acoustic seals .
...