b)Fuel OilIn the Na Duong II TPP, under normal stable operation conditions at loads greater than 40% rated output, CFB boiler shall be capable of firing fully coal fuel, and no fuel oil support required until the boiler operational load down to 40% rated output and below, then support fuel oil shall be added to stabilize the boiler combustion. Support fuel oil shall be used only at partial load below 40% rated output and during start up/shutdown.Notwithstanding the minimum partial load of 40% for non-oil firing envisaged by the Owner as above mentioned, the Bidder is required to propose his design figure based on its own boiler design and operation experiences. Fuel oil to be used to fire Na Duong II TPP boilers will have the following characteristics: