ISO 9902-4:2001/Amd 1:2009

ISO 9902-4:2001/Amd 1:2009 Overview

ISO 9902-4:2001/Amd 1:2009 is an important amendment to the International Standard ISO 9902-4:2001, which specifies the noise test code for textile machinery used in yarn processing, cordage, and rope manufacturing. Developed by ISO Technical Committee ISO/TC 72 and Subcommittee SC 8, this amendment updates normative references and aligns test procedures with part 1 of the ISO 9902 series-a set of standards dedicated to noise testing in textile machinery.

As noise control and occupational safety remain critical concerns within the textile manufacturing industry, ISO 9902-4 helps manufacturers, testing bodies, and regulatory authorities implement consistent noise measurement practices. Compliance with this standard promotes improved workplace health and safety by enabling accurate assessment and management of noise emissions from yarn and cordage production machinery.

Key Topics of ISO 9902-4:2001/Amd 1:2009

• Noise Test Code Updates: The amendment revises normative references, removing specific publication years and adding newer related standards to ensure consistency across the ISO 9902 series and other safety standards for textile machinery.

• Integration with ISO 9902-1: Several clauses including measurement procedures and test environment requirements now refer to the updated ISO 9902-1:2001/Amd.1:2009, which addresses common noise measurement requirements for textile machinery.

• Safety and Acoustic Performance: The standard harmonizes noise testing methods with ISO 11111-1:2005/Amd.1, focused on safety requirements, ensuring that noise assessment is aligned with overall machinery safety standards.

• Applicability to Yarn and Rope Machinery: Tailored noise test procedures address specialized equipment used in yarn processing, cordage making, and rope manufacturing, reflecting industry-specific operational environments and noise sources.

Applications of the Standard

• Textile Machinery Manufacturers: Use ISO 9902-4 to design and validate machinery compliance with internationally recognized noise limits, facilitating market access and customer assurance.

• Testing Laboratories: Implement uniform noise measurement protocols for certification, product approvals, and quality assurance within the yarn and rope manufacturing sector.

• Workplace Safety Officers: Assess machinery noise impact on workers and ensure compliance with occupational health regulations by applying standardized noise data.

• Regulatory Compliance: Assist governmental and industry regulators in setting and enforcing noise emission limits based on ISO-compliant testing methods.

• Research & Development: Guide development of quieter textile machinery technology through reliable acoustic performance benchmarking.

Related Standards

• ISO 9902-1:2001/Amd 1:2009 – Noise test code part addressing common requirements for textile machinery noise measurement.

• ISO 11111-1:2005/Amd 1:- – Safety requirements for textile machinery, including noise and vibration safety aspects.

• ISO 3743, 3744, 3746, 3747 – Series on sound power levels and noise emission measurement techniques referenced within the noise test code.

• ISO 9614-1 and 9614-2 – Standards detailing sound intensity measurement methods applicable in textile machinery noise assessment.

• ISO 11201, 11202, 11203, 11204 – Standards covering noise measurement in various working conditions and environments.

Practical Value and Benefits

Adherence to ISO 9902-4:2001/Amd 1:2009 ensures textile manufacturers and testing organizations can:

• Achieve consistent and reliable noise measurement results across different facilities and equipment models.
• Enable effective noise control strategies to protect worker hearing and improve factory conditions.
• Facilitate international trade by meeting recognized global standards for machine noise emissions.
• Support machine design optimization by providing clear acoustic performance metrics.
• Ensure compliance with occupational health and safety regulations, minimizing legal and operational risks.

By integrating this amendment into the broader ISO 9902 noise test code framework, stakeholders in yarn processing, cordage, and rope manufacturing benefit from improved clarity, harmonization, and technical rigor in noise testing procedures. This ultimately leads to safer, quieter, and more sustainable textile production environments.