EN ISO 9902-7:2001 PDF

Overview

EN ISO 9902-7:2001 - "Textile machinery - Noise test code - Part 7: Dyeing and finishing machinery" is a CEN-adopted part of the ISO 9902 series that complements Part 1 (common requirements). It specifies the mounting, operating and measuring conditions required for the measurement, declaration and verification of noise emitted by dyeing and finishing machinery and related processes (preparation, dyeing, printing, fixing/wetting/drying, finishing, making-up/presentation). The standard applies to engineering methods (grade 2) and survey methods (grade 3) and is not applicable to hydro (centrifugal) extraction machines.

Key topics and technical requirements

• Scope & test object definition - Identifies machine types and measurement options for single- and multi‑tier equipment; tests normally at 1.60 m height for workplace positions.
• Measurement methods - Sound power and emission sound pressure levels are determined using referenced acoustics standards:
  • Sound power: measurement by sound intensity (ISO 9614‑1/‑2) or by sound pressure on a measurement surface (ISO 3744, ISO 3747, ISO 3746 where necessary).
  • Emission sound pressure at workstations: ISO 11201, ISO 11204, ISO 11202 (survey only).
• Mounting & installation - Specifies mounting/installation and operating conditions to ensure repeatable, comparable measurements.
• Operating conditions - Defines machine operating states, control settings and loading relevant for declared noise values.
• Data handling - Requirements for measurement uncertainties, information to be recorded and reported, and procedures for declaration and verification of noise emission values.
• Regulatory context - Supports conformity with EU Machinery Directive provisions (informative Annex ZB).

Applications and who uses it

• Machinery manufacturers - to declare standardized noise emission values and design quieter dyeing/finishing equipment.
• Test laboratories and acoustic consultants - to perform repeatable, accredited noise tests using engineering (grade 2) or survey (grade 3) methods.
• Occupational health & safety professionals - to assess workplace noise exposure at dyeing/finishing operations.
• Purchasing/procurement teams and compliance officers - to compare equipment noise performance and demonstrate conformity with EU directives.

Related standards

Key normative references integrated into EN ISO 9902‑7:2001:

• ISO 9902‑1 (Common requirements)
• ISO 1506 (Machine classification)
• ISO 3744 / ISO 3746 / ISO 3747 (Sound power by pressure methods)
• ISO 9614‑1 / ISO 9614‑2 (Sound intensity)
• ISO 11201 / ISO 11202 / ISO 11204 (Emission sound pressure measurement)

Keywords: EN ISO 9902-7:2001, noise test code, textile machinery, dyeing and finishing machinery, sound power, emission sound pressure, ISO 3744, ISO 9614, ISO 11201.