Overview
ISO/TR 5925-2:2006 is an informative Technical Report that accompanies the ISO 5925 series on fire tests for smoke-control door and shutter assemblies. It provides commentary on the test method defined in Part 1 (ambient and medium temperature leakage test procedure), explains the design philosophy behind the tests, describes their limitations and appropriate application conditions, and gives guidance on using test results within a broader smoke containment strategy for life-safety and property-protection purposes.
Key topics
- Purpose and scope – Clarifies that smoke-control doors and shutters are intended to restrict smoke movement (not necessarily to provide fire resistance unless specifically rated) and to support smoke containment strategies.
- Definitions – Key terms such as door assembly, shutter assembly, smoke-control door, fire door, and temperature categories (ambient 20 ±10 °C, medium 200 ±20 °C, and high temperature per ISO 834‑1).
- Smoke dynamics – Discussion of buoyancy, entrainment, plume behaviour, stratification and how smoke transfers through gaps and openings around doors.
- Test applicability and limitations – When ambient- or medium-temperature leakage testing is appropriate, the significance of threshold gaps and sealing systems, and recognition that the Part 1 test does not generally address doors used in conjunction with active systems (pressurization, exhaust).
- Selection of sealing systems – Guidance on choosing perimeter seals and other features to reduce smoke leakage under expected pressure differentials.
- Use of test outputs – How to interpret leakage data and incorporate results into engineering decisions for containment, ventilation coordination and life-safety design.
Practical applications
Who uses ISO/TR 5925-2:2006 and how:
- Fire engineers & consultants - to interpret door leakage test data and integrate door performance into smoke-control and evacuation strategies.
- Architects & building designers - to specify appropriate door/shutter types and sealing strategies early in design.
- Door and shutter manufacturers - to understand test intent, limits of applicability, and to design assemblies that meet intended smoke-control performance.
- Test laboratories & code officials - to apply test results appropriately when evaluating compliance or suitability for a given building scenario.
- Facilities and safety managers - to select retrofit solutions and maintenance practices that preserve smoke containment effectiveness.
Related standards
- ISO 5925-1 - Ambient and medium temperature leakage test procedure (companion test specification).
- ISO 834-1 - Standard fire temperature-time curve (referenced for high-temperature conditions).
- ISO 3008 - Fire-resistance criteria referenced for fire doors.
Keywords: ISO/TR 5925-2:2006, smoke-control door, smoke containment strategy, leakage test, door assembly, shutter assembly, fire safety, ambient temperature, medium temperature.