 The boilers were of the radiant-heat type, comprising a water-cooled combustion chamber, controlled-type superheater and an economiser.Each of the boilers had an evaporation rating of 550 kL/h, a steam pressure of 950 psi and a steam temperature of 925 °F.Each boiler was equipped with two forced and two induced Howden fans, twenty-two electrically operated Clyde soot blowers, an automatic control system made by Bailey and Sturtevant electrostatic precipitators.