ISO 5925-1:2007

Overview

ISO 5925-1:2007 - Fire tests - Smoke-control door and shutter assemblies - Part 1: Ambient- and medium-temperature leakage tests defines a standardized method to measure smoke leakage through door and shutter assemblies at ambient and medium temperatures. The test determines the leakage rate (m3/h, corrected to standard conditions) under specified differential pressures and temperatures and is intended for assemblies used to control smoke movement in buildings. The standard does not set acceptable leakage limits; those are determined by regulators and authorities having jurisdiction.

Key topics and requirements

• Scope: Test applies to a range of door and shutter configurations intended for smoke control (single- or multi-leaf, rolling/folding curtains, vision panels, grilles).
• Test temperatures:
  • Ambient: average air temperature (20 ± 10) °C
  • Medium: average air temperature (200 ± 20) °C
• Differential pressure: Equipment must create and measure the pressure differential across the closed assembly; test requires at least 55 Pa.
• Leakage measurement:
  • Leakage rate expressed in m3/h (corrected to standard temperature and pressure).
  • Apparatus leakage q_a shall not exceed 7 m3/h.
  • System must measure leakage up to at least 55 m3/h with around 1 m3/h accuracy.
• Instrumentation: Differential pressure accuracy (5 Pa or 10% of measured), barometric ±5%; for medium-temperature tests, 12 thermocouples arranged in four horizontal rows to monitor chamber temperature.
• Test specimen: Full-size assemblies (or largest that fit, typically up to 3 m × 3 m); specimens should be representative of in-service construction, seals and finishes. Doors often tested from both sides (two specimens) unless fully symmetrical.
• Pre-test requirements: Record physical characteristics and all gaps/seals; disengage latches during test; conditioning per ISO 834-1 where applicable.
• Procedure and reporting: Mounting, setting up, leakage test method, observations, expression of results and detailed test report requirements are specified.

Applications and users

ISO 5925-1 is used by:

• Test laboratories performing type and performance testing of smoke-control doors and shutters.
• Manufacturers for product development, quality control and performance claims.
• Fire safety engineers and consultants for smoke containment strategy and specification of components.
• Architects and building designers specifying compliant smoke-control assemblies.
• Regulatory authorities and certification bodies evaluating compliance with national codes (note: leakage acceptance criteria are set by local regulations).

Practical uses include verifying smoke containment performance, comparing sealing strategies, and supporting compliance documentation for building safety strategies.

Related standards

• ISO 5925-2 (commentary on methods and applicability)
• ISO 834-1 (conditioning requirements)
• Other fire-door and smoke-control standards (e.g., ISO 3008 and national regulations)