NEN EN 12845 : 2015 C1 2016

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Contract planning and documentation
   4.1 General
   4.2 Initial considerations
   4.3 Preliminary or estimating stage
   4.4 Design stage
5 Extent of sprinkler protection
   5.1 Buildings and areas to be protected
   5.2 Storage in the open air
   5.3 Fire resistant separation
   5.4 Protection of concealed spaces
   5.5 Height difference between the highest and lowest
        sprinklers
6 Classification of occupancies and fire hazards
   6.1 General
   6.2 Hazard classes
   6.3 Storage
7 Hydraulic design criteria
   7.1 LH, OH and HHP
   7.2 High Hazard Storage - HHS
   7.3 Pressure and flow requirements for pre-calculated
        systems
8 Water supplies
   8.1 General
   8.2 Maximum water pressure
   8.3 Connections for other services
   8.4 Housing of equipment for water supplies
   8.5 Test facility devices
   8.6 Water Supply test
9 Type of water supply
   9.1 General
   9.2 Town mains
   9.3 Storage tanks
   9.4 Inexhaustible sources - Settling and suction chambers
   9.5 Pressure tanks
   9.6 Choice of water supply
   9.7 Isolation of water supply
10 Pumps
   10.1 General
   10.2 Multiple pump arrangements
   10.3 Compartments for pumpsets
   10.4 Maximum temperature of water supply
   10.5 Valves and accessories
   10.6 Suction conditions
   10.7 Performance characteristics
   10.8 Electrically driven pumpsets
   10.9 Diesel engine driven pumpsets
11 Installation type and size
   11.1 Wet pipe installations
   11.2 Dry pipe installations
   11.3 Alternate installations
   11.4 Pre-action installations
   11.5 Subsidiary dry pipe or alternate extension
   11.6 Subsidiary water spray extension
12 Spacing and location of sprinklers
   12.1 General
   12.2 Maximum area of coverage per sprinkler
   12.3 Minimum distance between sprinklers
   12.4 Location of sprinklers in relation to building
        construction
   12.5 Intermediate sprinklers in HH occupancies
13 Pipe sizing and layout
   13.1 General
   13.2 Calculation of pressure losses in pipework
   13.3 Pre-calculated systems
14 Sprinkler design characteristics and uses
   14.1 General
   14.2 Sprinkler types and application
   14.3 Flow from sprinklers
   14.4 Sprinkler temperature ratings
   14.5 Sprinkler thermal sensitivity
   14.6 Sprinkler guards
   14.7 Sprinkler water shields
   14.8 Sprinkler rosettes
   14.9 Corrosion protection of sprinklers
15 Valves
   15.1 Control valve set
   15.2 Stop valves
   15.3 Ring main valves
   15.4 Drain valves
   15.5 Test valves
   15.6 Flushing connections
   15.7 Pressure gauges
16 Alarms and alarm devices
   16.1 Water flow alarms
   16.2 Electrical water flow and pressure switches
   16.3 Fire brigade and remote central station alarm
        connection
17 Pipework
   17.1 General
   17.2 Pipe supports
   17.3 Pipework in concealed spaces
18 Signs, notices, and information
   18.1 Block plan
   18.2 Signs and notices
19 Commissioning and acceptance tests and periodic inspection
   19.1 Commissioning tests
   19.2 Completion certificate and documents
20 Maintenance
   20.1 General
   20.2 User's programme of inspection and checking
   20.3 Service and maintenance schedule
21 Evaluation of conformity
   21.1 Sprinkler kit
   21.2 Sprinkler system
Annex A (normative) Classification of Typical typical hazards
Annex B (normative) Methodology for categorizing stored goods
  B.1 General
  B.2 Material factor (M)
  B.3 Storage configuration
Annex C (normative) Alphabetical listing of stored
        products and categories
Annex D (normative) Zoning of sprinkler installations
  D.1 General
  D.2 Zoning of installations
  D.3 Requirements for zoned installations
  D.4 Block plan
Annex E (normative) Special requirements for high rise systems
  E.1 General
  E.2 Design criteria
  E.3 Water supplies
Annex F (normative) Special requirements for life safety systems
  F.1 Subdivision into zones
  F.2 Wet Pipe pipe installations
  F.3 Sprinkler type and sensitivity
  F.4 Control Valve valve set
  F.5 Water supplies
  F.6 Theatres
  F.7 Additional precautions for maintenance
Annex G (normative) Protection of Special hazards
  G.1 General
  G.2 Aerosols
  G.3 Clothes in multiple garment hanging storage
  G.4 Flammable liquid storage
  G.5 Idle pallets
  G.6 Spirit based liquors in wooden barrels
  G.7 Non-woven synthetic fabric
  G.8 Polypropylene or polyethylene storage bins
Annex H (normative) Sprinkler systems monitoring
  H.1 General
  H.2 Functions to be monitored
Annex I (normative) Transmission of alarms
  I.1 Functions to be monitored
  I.2 Alarm levels
Annex J (informative) Precautions and procedures when a
        system is not fully operational
  J.1 Minimizing the effects
  J.2 Planned shut-down
  J.3 Unplanned shut-down
  J.4 Action following sprinkler operation
Annex K (informative) Twenty-five year inspection
Annex L (informative) Special technology
Annex ZA (informative) Clauses of this European
         Standard addressing the provisions of the
         EU Construction Products Directive
Bibliography

Defines requirements and gives recommendations for the design, installation and maintenance of fixed fire sprinkler systems in buildings and industrial plants, and particular requirements for sprinkler systems that are integral to measures for the protection of life.