Overview
EN ISO 9902-1:2001 - "Textile machinery - Noise test code - Part 1: Common requirements" sets out the general framework for measuring, declaring and verifying noise emissions from groups of textile machinery. Prepared by CEN in adoption of ISO 9902-1:2001, the standard defines the information and standardized conditions needed to obtain reproducible noise emission, sound power and sound pressure data for textile machines. It establishes common requirements for noise measurement methods, mounting and operation conditions and reporting so results are comparable across manufacturers and test laboratories.
Key topics and requirements
- Scope and purpose: Defines objectives for determination, declaration and verification of basic noise emission quantities for groups of textile machinery.
- Measurement methods: Specifies which acoustic measurement approaches apply and refers to established acoustics standards for sound power and sound pressure determination (e.g., ISO 3740 series, ISO 9614, ISO 11200–11204).
- Mounting and operation conditions: Requires standardized mounting, installation and machine operating conditions to ensure repeatable test results.
- Declaration and verification: Sets out how manufacturers should report declared noise emission values and how verification tests should be conducted.
- Statistical and uncertainty considerations: Aligns with statistical methods and verification principles referenced in related ISO standards to ensure declared values are statistically robust.
- Regulatory linkage: Supports conformity with the EU Machinery Directive (referenced in Annex ZB), helping manufacturers meet essential health and safety requirements related to noise.
Applications
- Establishing consistent, repeatable acoustic test procedures for textile machines (spinning, weaving, knitting, dyeing, finishing, nonwoven, etc.).
- Producing manufacturer noise declarations used in technical documentation, product datasheets and CE marking support.
- Performing in‑factory or laboratory verification testing during design validation, production quality control and type testing.
- Informing noise‑reduction design, supplier selection and workplace risk assessments (occupational noise control).
Who uses this standard
- Textile machinery manufacturers and OEMs for design validation and product documentation.
- Accredited acoustic test laboratories and R&D departments for standardized testing.
- Compliance and certification bodies evaluating CE marking and Machinery Directive conformity.
- Acoustic consultants, safety officers and purchasing/specification engineers in the textile industry.
Related standards
EN ISO 9902 series (Parts 2–7 cover specific machine groups) and normative acoustics references such as ISO 3740 series, ISO 9614, ISO 11200–11204, and ISO 4871 for declaration/verification principles. These are cited within EN ISO 9902-1:2001 to ensure harmonized acoustic measurement practice.
Keywords: EN ISO 9902-1:2001, textile machinery noise test code, noise emission, sound power, sound pressure, noise measurement, acoustic testing, Machinery Directive, CEN.
