and testing of electronic instrumentation equipment. Details of routine works carried out by the division are given in Appendix CC.
Maintenance
11.56 A total of 75 pumping stations, 15 treatment works and 48 minor installations are included in planned maintenance programmes set up by the Division. During the year, the total installed electrical plant horse-power increased by approximately 0.96% from 66,864 brake horse power to 67,506 brake horse power.
11.57 The anode support structure for the Shek Pik submarine pipeline damaged during Typhoon Rose in 1971 was rebuilt by Port Works Office and the system restored to normal operation.
11.58 Extensive tests were initiated to investigate the problem of brush breakage and deterioration of commutators on the high voltage variable speed motors at the River Indus pumping station.
11.59 Automatic fire fighting equipment was installed in the Switch and Transformer rooms at Sandy Bay pumping station to meet the conventional requirements for such installations.
11.60 Work continued on routine maintenance programmes and a number of major faults were attended to on an emergency basis. Two medium voltage and one high voltage motors were rewound.
Development and New Projects
11.61 Co-ordination with the consultants was maintained in connection with specifications for electrical and instrumentation equipment to be installed on the Plover Cove and the High Island schemes.
11.62 The Electrical Project Design Manual was updated and two new supplements were issued. The General Specification for Electrical Installations was revised and standard specifications for control cables and related installations were developed. Reports on insertion flowmeters and telephone requirements for the desalting plant and Sha Tin treatment works were completed.
11.63 Three new pumping stations at Holy Cross Path, Hong Lok Yuen and Ting Kok and two treatment works at Tuen Mun and Leung Uk were commissioned. The installation of electrical services at four new stations was completed and installation of equipment at Bowen Road, Cheung Sha Wan, Peninsula and Tsuen Wan was in progress. Design work on four pumping stations was in hand.
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Connaught Road Central Widening and the New Central Bus Terminus.
Botanic Garden Flyover (upper) and Church Flyover (lower) over Garden Road.