The boiler plant consists of three oil fired boilers which have an evaporation rate of 575.9kg/s at continuous maximum rating with thermal conditions of 541°C and 165.5 bar at the superheater outlet. The boilers have a single furnace, are front wall fired and are designed to operate either continuously or on a two shift basis.
Each boiler has four stages of superheat and two stages of reheat, employing roof tubes and pendant banks of tubes in the horizontal pass. The heat recovery system incorporates a plain tube economiser and twin rotary gas airheaters.
The boilers were manufactured by NEI Nuclear Systems Ltd.