1970BS EN 12952-9:2022 Water-tube boilers and auxiliary installations. Part 9. Requirements for firing systems for pulverized solid fuels for the boiler
2003BS EN 12952-9:2003 Water-tube boilers and auxiliary installations. Requirements for firing systems for pulverized solid fuels for the boiler
2003BS EN 12952-9:2002 Water-tube boilers and auxiliary installations - Requirements for firing systems for pulverized solid fuels for the boiler