station will be taken from the sea via the intake pumphouse on the south side of the site. From there it will pass through underground reinforced concrete box culverts to the con- densers at the turbine blocks. After passing through the condensers the cooling water will be fed into the outlet culverts, again of reinforced concrete construction, and discharged from an outfall at the western end of the site.
The eventual peak flow from this outfall for the full 840 MW station
will be 524,000 gallons per minute. The outfall is sited about 200 ft. to the south of the western entrance to Aberdeen Harbour.
Hydraulic Model Tests
There is always a large volume of light fishing boat traffic using this entrance and many of the boats on leaving the harbour steer due south round the western tip of Ap Lei Chau and into the Lamma Channel. It was therefore vital that every possible precaution be taken to ensure that the discharge of cooling water from the outfall was in no way a hazard to this traffic. A series of hydraulic model tests on the proposed outfall was un- dertaken by the University of Hong Kong.
The objective of these tests was to rationalise the design of the outfall to give maximum dissipation of the energy of the discharged cooling water and minimise the current velo- cities and elimate turbulence off shore from the outfall. Based on the results of the tests on a 1 in 16 scale model the final design incorporates a series of stilling basins' through which the cooling water is passed before reach- ing the sea.
The most visible feature of this first stage of the Ap Lei Chau Power station is the 400 ft. tall chimney. The reinforced concrete shell of the chimney was completed last month.
Other features will be the three tall
Floor slab for reservoir under construction
Intake structure partially completed. November 1966
PUMP HOUSE
BOILER HOUSE
T
TURBINE
HOUSE
Section from south to north
Far East Architect & Builder June, 1967
TURBO BLOCK
C W
CULVERTS
0199
„TRANSFORMER ANNEXE
TURBO BLOCK FOUNDATIONS
55