1972-1973 — Page 171

General

MECHANICAL DIVISION

Chief Engineer:

R. J. JOHNSON, C.Eng., M.I.Mech.E., M.I.W.E.

C. Li, C.Eng., A.F.R.Ae.S., M.I.Mech.E. (Acting)

11.47 The Division is responsible for the operation and maintenance of waterworks mechanical plant and equipment and for the design, procurement, installation and commissioning of the mechanical component of all new waterworks plant except for plant associated with the Plover Cove and High Island Water Schemes and the 40 million gallons per day desalter.

11.48 Two workshops, one on the Island and one in Kowloon, provide support for maintenance activities including emergency works, together with manufacturing facilities for special new works items. The workshops are equipped with the latest machine tools and employ fitters, welders, machine tool operators, platers, blacksmiths, coppersmiths and pattern makers. More than 37,000 water meters and 150 engines and pumps were overhauled during the year. Details of other works carried out in the workshops, meter repair shops and by this division generally are given in Appendix CC under item 7.

Operation and Maintenance

11.49 Three new pumping stations, Tuen Mun, Peninsula and Ting Kok were taken over and put into service. Additional new plant was installed and commissioned at Cheung Chau, Cheung Sha Wan and Bowen Road pumping stations. At Tsuen Wan No. 1 the installation of two new 10 million gallons per day pumpsets was substantially completed. The division now operates 65 pumping stations which together house over 234 pumpsets. The total installed horsepower throughout the Colony increased by 1.9% to 84,426 brake horsepower.

11.50 A comprehensive marine survey on the hull of the floating pumping station at Plover Cove was undertaken. The survey, which included ultrasonic tests to determine plate thickness, revealed that the condition of some of the plates was unsatisfactory. The results indicated that an internal reinforced concrete lining to the four buoyancy tanks would be necessary and this work commenced.

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