Q 77
P.W.E. Hongkong.
specified to be capable of the above duty at 80% of their steaming capacity. The working steam pressure is 150 lbs. per square inch. A Green's economiser containing 96 pipes in two sets of 48 each is provided and multitubular superheaters, capable of raising the temperature of the steam 120 to 130 degrees Fahrenheit above the temperature of the steam at 150 lbs. pressure, are fitted in the smoke chamber of each boiler,
The official trials and tests of efficiency and steam consumption have not yet been carried out, pending the renewal of certain defective portions of the engines.
A Contract for the laying of the suction and rising mains and for certain improvements in the access road round the shore of Taitam Bay to the pumping station was let in March 1914, the work being completed in September 1916. In all, 5 miles of cast iron pipes, 18" in diameter, were laid. This quantity includes miles of pipe obtained by taking up the suction main laid in 1904-1908 from the Intermediate Reservoir, the removal of which was necessary on account of its becoming submerged by the new reservoir, the top-water level of which is 10 feet above the level of the stream-bed at the outer toe of the Intermediate Dam. The access road round the shore of Taitam Bay in which the suction mains are laid has been shortened and greatly improved in alignment by the construction of an embankment 358 yards in length. As the foreshore on which the new embankment was constructed was soft, the mains are supported at intervals of 12 feet on piers on piled foundations.
At the close of the year, there were still some liabilities outstanding, including a sum of $25,000 retained under the Contract for the Dam and Contingent Works,
1917 Estimates, $320,000.00 Total Estimates, $2,455,000.00 Expenditure to 1917 Expenditure, $262,422.40 31/12/17, $2,335,287.09119. Altering and installing hydraulic motor in connection with new Filter Beds, West Point.—A Contract for the erection of the motor-house was let in August and fair progress had been made with the work by the close of the year. The alterations to the motor itself were practically completed but a number of special pipe castings for connection with the mains were still required.
1917 Estimates, $10,000.00 Total Estimates, $10,000.00 1917 Expenditure, Expenditure to $5,495.78 31/12/17, $6,841.44* The actual expenditure during 1917 amounted to $278,675.90, from which a credit of $16,253.50, resulting from the transfer of surplus pipes to other works and from the disposal of scrap metal, etc., has been deducted.