EN 12416-2:2001+A1:2007

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Expellant gas
5 Extinguishing powder
6 Components
7 Reserve quantity
8 Location of extinguishing powder container and
   expellant gas container
9 Safety precautions
10 Total flooding systems
11 Local application systems
12 Control and release of powder extinguishing systems
13 Pipework design
14 Documentation, inspection and maintenance
15 Evaluation of conformity
Annex A (informative) Example calculations for local
        application system - surface fire
Annex B (informative) Example calculations for local
        application systems
Annex C (informative) Minimum design conditions for powder
        based on sodium bicarbonate

This European Standard specifies requirements and gives recommendations for the design, construction and maintenance of kits covering components of powder fire extinguishing systems which discharge powder from a container, or centrally grouped containers, through nozzles by means of expellant gas in accordance with EN 12416-1:2001 and the relevant part of EN 54 where required.This European standard covers systems which are suitable for general use in buildings and other construction works as well as outdoor hazards. This standard does not cover stored pressure systems or pre-engineered systems up to 150 kg of the extinguishing media quantity, powder hose lines and monitor systems, nor areas with a risk of explosion, earthquake zones or extreme environmental conditions e.g. marine, offshore, mining or aircraft.This European standard does not apply to systems where there is a risk of class "D" fires according to EN 2.