NS EN 12953-12 : 1ED 2003

Foreword
1 Scope
   1.1 Firing systems
   1.2 Fuels
   1.3 Operational equipment
2 Normative references
3 Terms and definitions
4 Fuel bunkers with conveying plant
   4.1 General
   4.2 Conveying plant
   4.3 Fuel bunkers
   4.4 Fuel bins
5 Fuel treatment
   5.1 General
   5.2 Size reduction of the fuel
   5.3 Drying of the fuel
6 Fuel feeding
7 Explosion prevention measures
8 Equipment for combustion air supply and flue gas discharge
   8.1 Air supply
   8.2 Combustion air/fuel ratio
   8.3 Flue gas discharge
9 Firing system
   9.1 General
   9.2 Control and monitoring
   9.3 Electrical equipment
   9.4 Safety precautions
       9.4.1 General
       9.4.2 Purging of the flue gas passes
       9.4.3 Lightning-up
       9.4.4 Start-up
       9.4.5 Shutting down
   9.5 Common stack for several firing systems
10 Ash handling and extraction
11 Operation and maintenance
   11.1 General
   11.2 Operating instructions
Annex A (informative) Operational requirements for permanently
        supervised firing systems for solid fuels on grate firing
        systems
Annex ZA (informative) Relationship between this European Standard
         and the Essential Requirements of EU Directive 97/23/EC
Bibliography

Describes the requirements for internal or external grate firing systems commencing at the fuel bunkers and ending at the ash extraction plant.