EN ISO 9902-4:2001

• Abstract:

  This Part 4 of the standard is a complement to Part 1 and specifies, together with it, the mounting, operating and measuring conditions required for the measurement, declaration and verification of noise emitted by different types of spinning preparatory and spinning machines. It is applicable to engineering methods (grade 2) and survey methods (grade 3) defined in the standards referred to. It concerns machines for: - yarn processing (e.g. doubling, twisting and texturing machines, reeling and winding machines, ball winding machines); etc.

• Status: Published
• Publication Date: 14-Mar-2001
• ICS: 17.140.20 - Noise emitted by machines and equipment
• ICS: 59.120.01 - Textile machinery in general
• Technical Committee: CEN/TC 214 - Textile machinery and allied machinery
• Drafting Committee: CEN/TC 214/WG 4 - Measurement and reduction of noise
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 08-Aug-2006
• Completion Date: 08-Aug-2006
• Directive: Harmonized Standard2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
  OJ Ref: C, C 309 OJ Date: 18-Dec-2009
• Directive:

  ---

  Not Harmonized98/37/EC - Machinery
  OJ Ref: C, C 192, C 332, C 336 OJ Date: 27-Nov-2001
• Mandate: M/BC/CEN/88/13 - Standardization request to CEN/CENELEC relating to machinery
• Ref Project: SIST EN ISO 9902-4:2002 - Textile machinery - Noise test code - Part 4: Yarn processing, cordage and rope manufacturing machinery (ISO 9902-4:2001)

• Refers: ISO 9614-1:1993 - Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points
• Effective Date: 03-Jun-2026
• Refers: ISO 11111:1995 - Safety requirements for textile machinery
• Effective Date: 03-Jun-2026
• Refers: ISO 11201:1995 - Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions — Engineering method in an essentially free field over a reflecting plane
• Effective Date: 03-Jun-2026
• Refers: ISO 3743-1:1994 - Acoustics — Determination of sound power levels of noise sources — Engineering methods for small, movable sources in reverberant fields — Part 1: Comparison method for hard-walled test rooms
• Effective Date: 03-Jun-2026
• Refers: ISO 9902-1:2001 - Textile machinery — Noise test code — Part 1: Common requirements
• Effective Date: 03-Jun-2026
• Refers: ISO 11204:1995 - Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions — Method requiring environmental corrections
• Effective Date: 03-Jun-2026
• Refers: ISO 3746:1995 - Acoustics — Determination of sound power levels of noise sources using sound pressure — Survey method using an enveloping measurement surface over a reflecting plane
• Effective Date: 03-Jun-2026
• Refers: ISO 11111-4:2005 - Textile machinery — Safety requirements — Part 4: Yarn processing, cordage and rope manufacturing machinery
• Effective Date: 03-Jun-2026
• Refers: ISO 11202:1995 - Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions — Survey method in situ
• Effective Date: 03-Jun-2026
• Refers: ISO 3747:2000 - Acoustics — Determination of sound power levels of noise sources using sound pressure — Comparison method in situ
• Effective Date: 03-Jun-2026
• Refers: ISO 11203:1995 - Acoustics — Noise emitted by machinery and equipment — Determination of emission sound pressure levels at a work station and at other specified positions from the sound power level
• Effective Date: 03-Jun-2026
• Refers: ISO 11111-4:2005/Amd 1:2009 - Textile machinery — Safety requirements — Part 4: Yarn processing, cordage and rope manufacturing machinery — Amendment 1
• Effective Date: 09-Feb-2026
• Refers: ISO 9614-2:1996 - Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 2: Measurement by scanning
• Effective Date: 09-Feb-2026
• Refers: ISO 9902-1:2001/Amd 1:2009 - Textile machinery — Noise test code — Part 1: Common requirements — Amendment 1
• Effective Date: 09-Feb-2026
• Refers: ISO 3744:1994 - Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering method in an essentially free field over a reflecting plane
• Effective Date: 09-Feb-2026

Overview - EN ISO 9902-4:2001 (Textile machinery, noise test code)

EN ISO 9902-4:2001 is the CEN-adopted European version of ISO 9902-4:2001, part of the ISO 9902 series for textile machinery. It complements Part 1 (common requirements) and specifies the mounting, operating and measuring conditions required for the measurement, declaration and verification of noise emitted by yarn processing, cordage and rope manufacturing machinery. The standard is intended to ensure consistent, reproducible noise measurement and reporting for this category of textile machines.

Key topics and technical requirements

• Scope and applicability
  • Targets yarn processing equipment such as doubling, twisting, texturing, reeling, winding and ball-winding machines, and cordage/rope manufacturing machines.
  • Complements the general rules in ISO 9902‑1.
• Measurement conditions
  • Specifies required mounting, operating (running) and measuring conditions for noise tests to ensure repeatability.
• Measurement grades
  • Applies to engineering methods (grade 2) and survey methods (grade 3) as defined in the referenced acoustics standards.
• Noise declaration and verification
  • Provides the framework for measurement, declaration and verification of machine noise so manufacturers and testing bodies can produce comparable sound data.
• Normative references
  • Cross-references established acoustics and machinery standards (e.g., ISO 3743‑1, ISO 3744, ISO 3746, ISO 9614, ISO 11201–11204, ISO 11111) for methods like sound power and emission-level determinations.

Applications - who uses EN ISO 9902-4 and why

• Machine manufacturers use the standard to quantify and declare noise emissions for yarn processing and rope-making equipment.
• Independent test laboratories and acoustic consultants follow the specified mounting and measuring conditions to produce repeatable, comparable test results.
• Compliance and safety engineers rely on the standard to demonstrate conformity with machine-safety and noise-related requirements (it supports the EU Machinery Directive 98/37/EC).
• Procurement specialists and end users use declared noise data for risk assessment, workplace planning and hearing-conservation measures.

Related standards and context

• Part of the ISO 9902 series (Parts 1–7) covering textile machinery noise test codes.
• Normative references include ISO acoustics standards for sound power and emission measurement: ISO 3743‑1, ISO 3744, ISO 3746, ISO 3747, ISO 9614‑1/2, ISO 11201–11204, and safety standard ISO 11111.
• Adopted by CEN and listed in Annex ZB as supporting EU Machinery Directive requirements.

This standard is essential for consistent noise measurement, declaration of machine sound levels, and regulatory compliance in the textile machinery sector - particularly for yarn processing, cordage and rope manufacturing equipment.

SLOVENSKI STANDARD
01-november-2002
Tekstilni stroji - Preskusni postopki za merjenje hrupa - 4. del: Stroji za predelavo
preje in stroji za proizvodnjo sukanca in vlaken/niti (ISO 9902-4:2001)
Textile machinery - Noise test code - Part 4: Yarn processing, cordage and rope
manufacturing machinery (ISO 9902-4:2001)
Textilmaschinen - Geräuschmessverfahren - Teil 4: Garnverarbeitungs-, Seilereiwaren-
und Seilereimaschinen (ISO 9902-4:2001)
Matériel pour l'industrie textile - Code d'essai acoustique - Partie 4: Machines de
transformation du fil et machines de production de cordages et articles de corderie (ISO
9902-4:2001)
Ta slovenski standard je istoveten z: EN ISO 9902-4:2001
ICS:
17.140.20 Emisija hrupa naprav in Noise emitted by machines
opreme and equipment
59.120.01 Tekstilni stroji na splošno Textile machinery in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 9902-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2001
ICS 17.140.20; 59.120.01
English version
Textile machinery - Noise test code - Part 4: Yarn processing,
cordage and rope manufacturing machinery (ISO 9902-4:2001)
Matériel pour l'industrie textile - Code d'essai acoustique - Textilmaschinen - Geräuschmessverfahren - Teil 4:
Partie 4: Machines de transformation du fil et machines de Garnverarbeitungs-, Seilereiwaren- und Seilereimaschinen
production de cordages et articles de corderie (ISO (ISO 9902-4:2001)
9904:2001)
This European Standard was approved by CEN on 15 March 2001.
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 Management Centre 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, 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
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9902-4:2001 E
worldwide for CEN national Members.

Page 2
Foreword
The text of the International Standard ISO 9902-4:2001 has been prepared by Technical Committee ISO/TC
72 "Textile machinery and machinery for dry-cleaning and industrial laundering" in collaboration with
Technical Committee CEN/TC 214 "Textile machinery and machinery for dry-cleaning and industrial laundry",
the secretariat of which is held by SNV.
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 September 2001, and conflicting national standards shall be
withdrawn at the latest by September 2001.
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZB, which is an integral part of this standard.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark,
Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,
Spain, Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of the International Standard ISO 9902-4:2001 was approved by CEN as a European Standard
without any modification.
NOTE: Normative references to International Standards are listed in annex ZA (normative).
Attention is drawn to the possibility that some of the elements of this International Standard may be the
subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
This first edition of ISO 9902-4, together with ISO 9902-1, ISO 9902-2, ISO 9902-3, ISO 9902-5,
ISO 9902-6 and ISO 9902-7, cancels and replaces ISO 9902:1993, which has been technically revised.
ISO 9902 consists of the following parts, under the general title Textile machinery - Noise test code:
- Part 1: Common requirements
- Part 2: Spinning preparatory and spinning machinery
- Part 3: Nonwoven machinery
- Part 4: Yarn processing, cordage and rope manufact
...