BS ISO 21925-1:2018
$189.07
Fire resistance tests. Fire dampers for air distribution systems – Mechanical dampers
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 48 |
This document specifies a test method for the determination of the resistance of fire dampers to heat, and for the evaluation of their ability to prevent fire and smoke spreading from one fire compartment to another through an air distribution system.
It is applicable to mechanical fire dampers. It is not intended to be used for dampers used only in smoke control systems, for testing fire protection devices which only deal with air transfer applications, or for dampers used in suspended ceilings, as the installation of the damper and duct can have an adverse effect on the performance of the suspended ceiling, requiring other methods of evaluation.
NOTE “Air transfer” is a low-pressure application through a fire separation door (or wall, floor) without any connection to an air duct.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Principles of the test |
| 11 | 5 Apparatus |
| 20 | 6 Test construction 6.1 General 6.1.1 Side to be tested |
| 21 | 6.1.2 Dampers installed in both walls and floors 6.1.3 Dampers installed within a structural opening 6.1.4 Dampers mounted onto face of wall or floor. 6.1.5 Dampers remote from wall or floor 6.1.6 Minimum separation between dampers 6.2 Size of specimen |
| 23 | 6.3 Thermal release mechanism 6.4 Specimen installation |
| 24 | 6.5 Supporting construction 6.5.1 Principles 6.5.2 Recommended supporting constructions |
| 25 | 6.6 Conditioning 7 Determination of leakage of connecting duct and measuring station |
| 26 | 8 Determination of leakage at ambient temperature 9 Fire test |
| 27 | 10 Classification and criteria |
| 28 | 10.1 Number of tests required |
| 29 | 11 Test report |
| 30 | 12 Direct field of application of the test results 12.1 Size of fire damper 12.2 Fire dampers installed within structural openings 12.3 Fire dampers mounted onto the face of a wall 12.4 Fire dampers remote from a wall or floor 12.5 Separation between fire dampers and between fire dampers and construction elements 12.6 Supporting constructions |
| 32 | Annex A (informative) Historical background of the test methods |
| 35 | Annex B (informative) Alternative thermal release mechanisms |
| 36 | Annex C (informative) Test of thermal release mechanisms |
| 45 | Annex D (informative) Reliability tests for thermal release mechanisms |
| 47 | Bibliography |
