Turbine Hall Annexes

Side rooms off the main turbine hall at White Bay Power Station open off the turbine hall floor through steel-framed doorways, each room a concrete-walled space used for auxiliary equipment and storage associated with the turbine plant. The rooms carry steel shelving on the walls, some still holding oil sample bottles, filter elements, and maintenance records in manila folders. Pipework from the main plant enters each room through wall penetrations, feeding oil coolers or seal water supplies for the adjacent turbine units. Overhead, cable runs on steel trays connect the auxiliary panels in the rooms to the turbine instrumentation. The floors are concrete, stained with oil drips from the plant above.

Turbine hall annexes at White Bay Power Station housed the auxiliary systems that supported the main generating plant: lube oil conditioning equipment, cooling water headers, seal steam supplies, and control and instrumentation panels. The Parsons turbines at White Bay required a continuous supply of clean, filtered lube oil to the rotor bearings, and the lube oil conditioning plant typically occupied a room adjacent to the turbine hall floor. White Bay ran from 1917 to Christmas Eve 1983, with the turbine plant expanded in the phases completed 1928, 1953 and 1958. After the Christmas Eve 1983 shutdown the annexes were included in the 1990s decontamination survey. Heritage listing followed in April 1999.