1.1 Firing systems This document specifies requirements for liquid and gaseous fuel firing systems of steam boilers and hot water generators as defined in EN 12952-1:2015. These requirements also apply to firing systems of chemical recovery boilers (black liquor boilers) with the additions and amendments specified in Annex A. These requirements also apply to gas turbines in combination with fired\/unfired heat recovery steam generators with the additions and amendments specified in Annex B. NOTE 1 This document is not applicable to coil type boilers (flash boilers\/small boilers) that use burners in accordance with EN 12953-7 for single burner installations. NOTE 2 This document is not applicable to the storage of liquid fuels and to transfer stations of long-distance gas pipelines. 1.2 Fuels This document specifies requirements which cover the use of liquid and gaseous fuels as defined in this document. Fuels deviating from standardized commercially available types can require additional or alternative safety measures. For black liquor these safety measures are given in Annex A.<\/p>\n
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| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | Annex ZA (informative) Relationship between this European Standard and the essential requirements of Directive 2014\/68\/EU aimed to be covered Annex ZA (informative) Relationship between this European Standard and the essential requirements of Directive 2014\/68\/EU aimed to be covered Annex ZA (informative) Relationship between this European Standard and the essential requirements of Directive 2014\/68\/EU aimed to be covered <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | European foreword <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 1 Scope 1.1 Firing systems 1.2 Fuels 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4 Fuel supply 4.1 General 4.2 Fuel transfer and preparation <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 4.3 Fuel lines <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 4.4 Safety shut-off devices (Safety trip valves) <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 5 General 5.1 Air supply <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 5.2 Air\/fuel ratio 5.3 Flue gas discharge <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 6 Firing system 6.1 Burners <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 6.2 Flue gas recirculation 6.3 Control and monitoring <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 6.4 Electrical equipment 6.5 Safety precautions <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 6.6 Common stack for several firing systems 7 Operating manual 8 Particular requirements for firing systems burning gaseous fuels with high relative density 8.1 Main firing systems 8.1.1 Supply of gases <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 8.1.2 Safety shut-off device 8.1.3 Shutdown of burners for heavy gas in its liquid state 8.2 Ignition burner systems <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Annex A (normative) Chemical recovery boiler (black liquor boiler) <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Annex B (normative) Gas turbines in combination with heat recovery steam generators <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Annex C (informative) Operational requirements for permanent supervised firing systems for liquid and gaseous fuels <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Annex D (informative) Significant technical changes between this document and the previous edition <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Water-tube boilers and auxiliary installations – Requirements for firing systems for liquid and gaseous fuels for the boiler<\/b><\/p>\n |