Overview
SIST ISO 5925:2026 - Smoke-control door, shutter assemblies and self-closing glazed elements - Ambient-temperature and medium-temperature leakage tests - specifies a standardized test method to determine the leakage rates of smoke at ambient and medium temperatures through door and shutter assemblies, including self-closing glazed elements. The test protocol covers varying configurations of doors, shutters, and glazed elements intended to control smoke spread during a fire, ensuring that such components perform their critical life safety and property protection functions under fire conditions. It is developed by SIST in adaptation of ISO 5925:2025.
Key Topics
- Smoke Control: The standard focuses on evaluating doors, shutters, and glazed elements designed to restrict smoke passage, a crucial element of passive fire safety.
- Leakage Rate Testing: It details the procedures to measure air leakage (as a proxy for smoke leakage) at both ambient (approx. 20 °C) and medium (approx. 200 °C) temperatures under controlled differential pressures.
- Test Apparatus and Procedure: Guidance is provided on setting up the test chamber, instrumentation for pressure and temperature measurement, specimen preparation, and recording observations.
- Reporting Requirements: Specifies mandatory elements to include in test reports, such as detailed specimen descriptions, measured leakage rates, and any physical damage or deformation noted during the test.
- Applicability: Results apply to tested configurations and specified installation details, informing the use and certification of smoke-control assemblies in accordance with regulatory requirements.
Applications
- Building Safety Compliance: Enables manufacturers, building designers, and regulators to verify the smoke-control performance of doors, shutter assemblies, and glazed elements in fire safety strategies for commercial, residential, industrial, and public buildings.
- Product Development and Certification: Supports the development, third-party testing, and certification processes for smoke-control doors and shutters, ensuring products meet national and international fire safety standards.
- Fire Protection Planning: Provides essential data for engineers and fire safety consultants assessing building compartmentation and safe evacuation routes.
- Regulatory Assessment: Used by authorities having jurisdiction to assess compliance of installed passive fire protection measures with designated smoke leakage criteria defined in local or national fire codes.
- International Trade: Facilitates cross-border recognition of test results and product acceptance through harmonized methods, supporting global supply chains in the fire protection industry.
Related Standards
- ISO 834-1 - Fire-resistance tests - Elements of building construction: General requirements: Outlines fire resistance testing protocols for building elements, referenced for conditioning test specimens.
- ISO 3008 series - Fire doors: Series provides broader context and additional test methods for fire resistance of doors.
- ISO 3009 - Fire resistance tests for glazed elements: Specifies fire-resistance test methods for glazed elements, complementing the smoke-leakage focus of ISO 5925.
- National Building Codes and Fire Regulations: Define acceptable smoke leakage rates and installation practices, which must be consulted in conjunction with ISO 5925 for full compliance.
Practical Value
Implementing the SIST ISO 5925:2026 standard ensures that smoke-control door and shutter assemblies, as well as self-closing glazed elements, are rigorously tested for their ability to minimize smoke migration during a fire. This supports safer building environments, compliance with regulatory requirements, and reliable performance of passive fire protection systems-critical factors in safeguarding occupants and assets. Adherence to this internationally recognized test method enhances trust in product performance and facilitates acceptance in varied regulatory contexts, promoting best practices in fire and smoke containment.
