7.14. Arising from the impending closure of the Waterworks pumping station at Kai Tak a scheme for the provision of a new sea-water pumphouse to supply 4.15 million g.p.d. to the Terminal Building air-conditioning plant and to be sited off the runway promontory was under investigation. The Civil Aviation Department carried out flight tests to confirm that the proposed structure would not have any adverse effects on the instrument landing system.
Incinerator Plant, Hong Kong Island
7.15. Design details and specifications for the 500-tons-per-day refuse incinerator plant to be erected at Kennedy Town were finalized and the order for manufacture placed. The civil engineering side of the project is being handled by the Port Works Office and site formation and piling was well advanced. Three incinerator units are being installed initially—with provision for a fourth to be added later—each capable of burning 10 tons per hour of refuse; the hot gases from the burning refuse will pass through two waste heat boilers each capable of producing 15,000 lbs/hour of steam. Part of the steam so produced will be fed to the new abattoir to be built in the adjacent site; but its main use will be to drive a 1,500 KVA turbo-alternator which will provide electric power to operate both the incinerator plant and various sections of the abattoir thus, in effect, producing free electricity from heat which otherwise would be lost up the chimney. The waste-heat boilers will be supplied as a part of the incinerator plant and separate orders have been placed for the condensing turbo-alternator set and associated switch board. Of some technical interest is the fact that the alternator will run in automatic synchronization with the local Electricity Company supply for the purposes of load changing from one to the other. It is anticipated that this plant will go into operation late in 1965.
Incinerator Plant, Kowloon
7.16. Design details and specification were also finalized for the Kowloon Incinerator Plant to be sited at Lai Chi Kok and the order placed on the manufacturer. This differs from the Kennedy Town plant only in that it will have all four units installed from the beginning and will be capable of a normal through-put of 750 tons per day with a maximum burning capacity of 1,000 tons per day; it will also incorporate an experimental composting plant of 50 tons capacity. A number of schemes for making use of the waste heat from the burning refuse have been under investigation including the possibility of installing desalination plants of various sizes up to 3 million gallons per day
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