February 2026: Updates in Fluid System Standards Covering Acoustic Testing and Pipeline Rehabilitation

Fluid systems professionals received key updates this February 2026 with the release of two new international standards relevant to acoustic measurement and pipeline rehabilitation. These foundational specifications—ISO 20145:2026 and ISO 11295:2026—raise the bar for safety, quality, and operational efficiency in the design, testing, and maintenance of pneumatic and piping systems. For organizations operating in manufacturing, infrastructure, water, and gas distribution, understanding these changes is essential to maintain compliance, achieve performance goals, and mitigate operational risks.

Overview / Introduction

Fluid systems and components are integral to countless industries—from industrial automation and manufacturing to municipal water supply, wastewater collection, and gas distribution. International standards help harmonize technical requirements, safety benchmarks, and best practices, ensuring interoperability and reducing compliance uncertainty across global markets.

Professionals reading this article will gain:

• An expert summary of the new standards in fluid systems published in February 2026
• Practical insights into the latest methods for acoustic emission testing and pipeline rehabilitation planning
• Compliance considerations and actionable next steps for engineers, quality managers, and procurement specialists

Detailed Standards Coverage

ISO 20145:2026 – Acoustic Emission Testing of Pneumatic Exhaust Silencers

Pneumatic fluid power — Test methods for measuring acoustic emission pressure levels of exhaust silencers

This revised edition ( second edition, replacing ISO 20145:2019) outlines standardized procedures for measuring sound pressure levels at the outlet of pneumatic exhaust silencers. ISO 20145:2026 introduces two clearly defined test methods:

• Steady-state mode: Measuring noise at a constant upstream pressure, simulating normal operating conditions (aligned with ISO 6358-1).
• Discharge mode: Capturing noise during pressure decrease, mimicking real-world discharge events (referencing ISO 6358-2).

These methods are essential for equipment manufacturers, test laboratories, and industrial operators seeking to reliably control and compare silencer performance. Key sections detail test set-up, environmental controls (with updated guidance in Annex E on sound attenuation), instrumentation calibration, measurement positioning (one or three microphones for increased accuracy), and result reporting.

Who needs to comply:

• Pneumatic equipment manufacturers
• Test labs and acoustic engineers
• Quality and regulatory personnel in automation, assembly, and process industries

Practical implementation demands adherence to the precise test environment, rigorous calibration procedures (IEC 61672-1 for sound meters, IEC 60942 for calibrators), and thorough documentation for catalog rating and regulatory reporting. The update places new emphasis on environmental correction and measurement uncertainty, ensuring results are both repeatable and comparable across the industry.

Key highlights:

• Two test modes (steady-state and discharge) for versatile, real-world silencer assessment
• Requirement for Class 1 acoustic instrumentation and annual calibration
• Enhanced environmental correction guidance and new annex on silencer sound attenuation

Access the full standard:View ISO 20145:2026 on iTeh Standards

ISO 11295:2026 – Plastics Piping Rehabilitation Classifications and Processes

Plastics piping systems used for the rehabilitation of pipelines — Classification and overview of strategic, tactical and operational activities

This comprehensive update (fourth edition, superseding ISO 11295:2022) provides a holistic framework for the rehabilitation of existing underground pipelines—covering drains, sewers, and water/gas supply networks. ISO 11295:2026 clearly delineates the overall process, from initial condition assessment through planning, execution, and documentation.

The standard establishes:

• Strategic and tactical activities, including investigation, performance assessment, and rehabilitation planning
• Operational activities, detailing project specification, technique selection, and thorough design documentation
• Classification of renovation and trenchless replacement families, with an in-depth review of methods such as continuous and close-fit pipe lining, cured-in-place pipe (CIPP) lining, burst pipe replacement, horizontal directional drilling (HDD), impact moling, and pipe jacking

Applicability covers system owners and contractors for underground utilities—municipalities, water and wastewater authorities, gas network operators, and rehabilitation service providers. The revision expands the terminology database, updates references, and enhances guidance on performance criteria, risk analysis, and acceptability testing.

Practical implementation benefits from:

• Clear definitions and categories for advanced rehabilitation techniques (minimizing excavation and social disruption)
• Detailed processes for performance evaluation, risk management, and quality control throughout project lifecycles
• New and revised terms supporting consistent communication and documentation among stakeholders

Key highlights:

• Comprehensive, lifecycle-based framework for pipeline rehabilitation
• Expanded technique classifications for both renovation and trenchless replacement
• Enhanced guidance on performance, risk, and environmental criteria

Access the full standard:View ISO 11295:2026 on iTeh Standards

Industry Impact & Compliance

Adopting these standards yields significant operational, safety, and reputational benefits:

• Improved reliability and safety: Ensures pneumatic devices and pipelines meet stringent noise, environmental, and structural standards.
• Market access: Demonstrates quality and due diligence for regulatory authorities and global clients.
• Risk mitigation: Reduces liability exposure from non-compliant or underperforming components.

Compliance considerations:

• ISO 20145:2026 demands robust acoustic testing infrastructure, calibrated equipment, and skilled personnel.
• ISO 11295:2026 requires organizations to align their rehabilitation workflows (from assessment through documentation) with the new lifecycle-driven framework.

Timeline:

• Both standards are effective immediately upon publication (February 2026).
• A transition period may be advisable for organizations currently using superseded editions.

Benefits of early adoption:

• Competitive advantage via state-of-the-art testing, documentation, and risk management
• Smoother certification processes and streamlined client audits
• Enhanced operational continuity and future-proofing of asset management programs

Risks of non-compliance:

• Regulatory penalties or market access restrictions
• Increased risk of costly failures (noise, leaks, structural collapse)
• Loss of reputation with clients and partners

Technical Insights

Common technical requirements:

• Both standards emphasize data-driven evaluation—requiring precise measurement, consistent documentation, and clear terminology.
• Environmental controls, such as background noise correction and reflective surfaces in acoustic testing, or adjacent ecosystem analysis in pipeline rehabilitation, underpin reliable test and implementation outcomes.

Implementation best practices:

• Invest in Class 1 measurement devices, and maintain rigorous calibration schedules
• Train personnel in new/revised procedures reflecting each standard
• Ensure full traceability of test conditions, results, and project decisions within formal documentation
• For pipeline rehabilitation, establish cross-functional teams to integrate technical, environmental, and operational decision-making

Testing and certification:

• Organizations should consider partnering with accredited third-party labs for testing and certification, especially for catalog ratings or infrastructure compliance reporting
• Regular internal audits against new standard requirements will further support alignment and continual improvement

Conclusion / Next Steps

The publication of ISO 20145:2026 and ISO 11295:2026 marks an important step forward in harmonizing technical practices for noise measurement and pipeline rehabilitation within fluid systems. These new standards not only codify cutting-edge science and field-proven techniques but also promote greater uniformity and safety across international markets.

Key takeaways:

• Stay ahead of regulatory requirements and client expectations by assessing current workflows against the updated standards
• Train staff and upgrade equipment as needed for acoustic and performance testing
• Engage with accredited providers and use authoritative resources, such as iTeh Standards, to access authoritative content

Recommendations:

• Download and review the full standards via iTeh Standards
• Schedule internal compliance reviews and gap analyses
• Establish regular updates and training sessions for relevant teams

Be proactive: By adopting these international best practices today, your organization ensures operational excellence and future-readiness in a rapidly evolving industry.