EN ISO 9902-3:2001 PDF

Overview

EN ISO 9902-3:2001 - Textile machinery: Noise test code - Part 3: Nonwoven machinery defines the mounting, operating and measuring conditions required for the measurement, declaration and verification of noise emitted by nonwoven textile machinery. It is a Part 3 supplement to ISO 9902-1 (Common requirements) and is applicable to engineering methods (grade 2) and survey methods (grade 3) for noise emission measurement. The standard targets nonwoven production equipment such as bale breakers, carding and web‑forming machines, needle punchers, stitch‑bonding and water‑jet bonding machines, lap drafters and other line components used in nonwoven manufacture.

Keywords: EN ISO 9902-3:2001, textile machinery noise test, nonwoven machinery noise, noise emission measurement, sound power level.

Key topics

• Scope and test object definition: Specifies which nonwoven machines are covered and references Table 1 and ISO 9902-1 for test‑object definition.
• Measurement methods: Permits sound power determination by:
  • Sound intensity (ISO 9614-1 discrete points or ISO 9614-2 scanning).
  • Emission sound pressure on prescribed measurement surfaces (ISO 3744, ISO 3747; ISO 3746 only if others impracticable).
• Work-station emission: Measurement of emission sound pressure levels at operator positions using recognised methods (see ISO 11201, ISO 11202, ISO 11204).
• Installation, mounting and operating conditions: Defines how the machine must be installed and operated during tests to ensure repeatable results.
• Measurement uncertainty and reporting: Requires assessment of uncertainties and specifies information to be recorded and reported for declaration and verification of noise values.
• Declaration and verification: Procedures for making and checking declared noise emission values for compliance and product information.

Applications

Who uses EN ISO 9902-3:2001:

• Machine manufacturers - to measure and declare noise levels for datasheets, CE marking and conformity with the Machinery Directive.
• Acoustic laboratories and test houses - for reproducible noise testing of nonwoven equipment using accepted engineering or survey methods.
• Occupational safety and compliance officers - to assess worker exposure and select appropriate controls or PPE.
• Plant engineers and purchasers - to compare equipment noise performance for procurement and factory layout planning.
• Design engineers - to guide noise‑control measures (enclosures, isolation, acoustic treatments) during product development.

Practical uses: product noise declarations, supplier specifications, factory acceptance tests, compliance with EU Machinery Directive 98/37/EC (informative Annex ZB), and noise‑control design for nonwoven production lines.

Related standards

• ISO 9902-1:2001 (Common requirements)
• ISO 3744 / ISO 3746 / ISO 3747 (sound power via sound pressure)
• ISO 9614-1 / ISO 9614-2 (sound intensity)
• ISO 11201 / ISO 11202 / ISO 11204 (emission sound pressure at work stations)

Using EN ISO 9902-3:2001 helps ensure consistent, repeatable noise measurements and clear noise declarations for nonwoven textile machinery.