What is BS EN 1364-5 - Fire resistance tests of air transfer grilles about?
BS EN 1364-5 is the fifth part of the multi-series standard that specifies a method for determining the fire resistance of air transfer grilles (ATG). It is applicable to air transfer grilles intended for installation in building components (typically walls, floors or ceilings). The orientation of the installation of the air transfer grille can be vertical or horizontal. The closing mechanism of the air transfer grille can come from the expansion of material and/or from any mechanical or electrical closing device. This test method is valid for fire resistant or fire resistant and smoke control air transfer grilles.
An additional test configuration is valid for fire resistant or fire resistant and smoke control air transfer grilles in applications where flame impingement is a risk during open state from the start of fire (Annex A).
Note-
BS EN 1364-5 test method is not valid for determining the fire resistance of air transfer grilles that are used in ducts because ATG is considered a separate element. The test method for ATG, used in ducts is described in the corresponding duct standards.
BS EN 1364-5 test method is not valid for determining the fire resistance of a fire damper or a fire barrier connected to a duct on either or both sides because an ATG is tested as a fire-separating element on its own. Fire dampers are tested according to EN 1366-2. Non-mechanical fire barriers are tested according to EN 1366-12.
BS EN 1364-5 test method is not valid for determining the fire resistance of air transfer grilles in fire doors, shutters and openable windows as specified in EN 1634-1 and EN 1364-2, because the deformation of fire doors, shutters and openable windows in fire conditions differ from the deformation of flexible/rigid walls. Moreover, the location of thermocouples in the door standard is too specific to be handled in this standard.
Who is BS EN 1364-5 - Fire resistance tests of air transfer grilles for?
BS EN 1364-5 on fire resistance tests for non-loadbearing elements - Air transfer grilles is useful for:
- Contractors  
- Fire engineers  
- Fire departments  
- Health and safety inspectors
- Equipment suppliers and manufacturers  
Why should you use BS EN 1364-5 - Fire resistance tests of air transfer grilles?
The air transfer grille is exposed to a specified regime of heating and the performance of the test specimen is monitored on the basis of criteria given in BS EN 1364-5. Fire-resistance of the test specimen is expressed as the time for which the appropriate criteria have been satisfied. The times so obtained will help you to measure the adequacy of the construction in a fire but have no direct relationship with the duration of a real fire.
BS EN 1364-5 test method evaluates the behaviour of the air transfer grille when exposed to the standard fire curve described in EN 1363-1 and the standard pressure described in EN 1363-1. BS EN 1364-5 specifies test for immediate heat exposure apply exclusively to products required to resist flaming during the open state and then become additional to the procedures described in the BS EN 1364-5.
You can use BS EN 1364-5 to measure the ability of a representative specimen of an air transfer grille to resist the spread of fire from one side to another.
