What is ISO 21927-3 about?
ISO 21927-3 is the third part of a multi-series of international standards on smoke and heat control systems. ISO 21927-3 specifies the product characteristics for powered smoke and heat control ventilators (fans) intended to be used as part of a powered smoke and heat control ventilation system in construction works.
ISO 21927-3 provides test and assessment methods of the characteristics and the conformance criteria of the test assessment results.
ISO 21927-3 applies to the following:
- Fans for smoke and heat control ventilation
- Impulse/jet fans for smoke and heat control ventilation
Who is ISO 21927-3 for?
ISO 21927-3 on smoke and heat control systems is relevant to:
- Manufacturers of smoke and heat control systems
- Designers of exhaust and ventilation systems
- Fire safety department
- Fire engineers
- Installers
- Management authorities of a property
Why should you use ISO 21927-3?
A smoke control system is a system that controls the movement of smoke and air in a building. Smoke and heat exhaust ventilation systems create a smoke-free layer above the floor by removing smoke. They also exhaust hot gases released by a fire in the developing stage. The use of smoke and heat exhaust ventilation systems to create smoke-free areas beneath a buoyant smoke layer has become widespread.
ISO 21927-3 is beneficial as it protects escape routes for occupants to evacuate safely and unimpeded by the effects of smoke. You will also be able to provide assistance to firefighters entering the building to find and tackle the fire quickly, protect stock and machines and delay the lateral spread of fire.
BS ISO 21927-3 enables the timely protection of occupants, inventory, machines, and production capacity with an optimal ventilation system against smoke, and reducing problems such as roof collapses and explosions. Apart from establishing an efficient fire emergency system, you will be able to minimise the negative effects on production capacity and prevent financial losses.
What’s changed since the last update?
BS ISO 21927-3:2021 replaces the first edition (ISO 21927‑3:2006), which has been technically revised. The main changes compared to the previous edition is:
- Amendment of the test apparatus
