calibration of electrical metering and protection equipment and a small workshop at Sha Tin Treatment Works carries out repair and testing of electronic instrumentation equipment. Details of routine works carried out by the division are given in Appendix CC under item (8).
Maintenance
10.52 Two fully automatic electric pumping stations and one semi-automatic diesel pumping station were commissioned. Eighty-two pumping stations, thirteen treatment works and thirty-six minor installations are now maintained by the Division. The total installed horse-power of electrical plant, including that commissioned by consulting engineers, increased from 63,103 HP to 66,864 HP, an increase of 5.6%.
10.53 One 825 HP pumpset was transferred from Sha Tin temporary pumping station to River Indus Pumping Station and one 75 HP pumpset from North Point Upper Pumping Station to Eastern Pumping Station.
10.54 The cathodic protection system for the Shek Pik submarine pipeline was damaged during Typhoon Rose, the anode support structure in Sandy Bay being totally destroyed. A temporary anode was installed pending rebuilding of a permanent structure.
10.55 The unsatisfactory air-hydraulic filter controllers and the original signal tubing at Silver Mine Bay Treatment Works were replaced by more reliable equipment.
10.56 Tests were carried out at North Point Salt Water Pumping Station on a new electrolytic chlorinator supplied on trial by the manufacturers. These tests showed that this type of unit was unsatisfactory owing to unreliability and high replacement cost of parts. The unit has been replaced by a conventional chlorinator.
10.57 Eight existing electrical services installations including one pumping station were completely rewired.
10.58 In-service training of technical staff, instrument mechanics and apprentices continued but Government salaries were sufficiently attractive to retain newly trained staff.
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calibration of electrical metering and protection equipment and a small workshop at Sha Tin Treatment Works carries out repair and testing of electronic instrumentation equipment. Details of routine works carried out by the division are given in Appendix CC under item (8).
Maintenance
10.52 Two fully automatic electric pumping stations and one semi- automatic diesel pumping station were commissioned. Eighty-two pumping stations, thirteen treatment works and thirty-six minor installations are now maintained by the Division. The total installed horse-power of electrical plant, including that commissioned by con- sulting engineers, increased from 63,103 HP to 66,864 HP, an increase of 5.6%.
10.53 One 825 HP pumpset was transferred from Sha Tin tem- porary pumping station to River Indus Pumping Station and one 75 HP pumpset from North Point Upper Pumping Station to Eastern Pumping Station.
10.54 The cathodic protection system for the Shek Pik submarine pipeline was damaged during Typhoon Rose, the anode support structure in Sandy Bay being totally destroyed. A temporary anode was installed pending rebuilding of a permanent structure.
10.55 The unsatisfactory air-hydraulic filter controllers and the original signal tubing at Silver Mine Bay Treatment Works were replaced by more reliable equipment.
10.56 Tests were carried out at North Point Salt Water Pumping Station on a new electrolytic chlorinator supplied on trial by the manufacturers. These tests showed that this type of unit was unsatis- factory owing to unreliability and high replacement cost of parts. The unit has been replaced by a conventional chlorinator.
10.57 Eight existing electrical services installations including one pumping station were completely rewired.
10.58 In-service training of technical staff, instrument mechanics and apprentices continued but Government salaries were sufficiently attractive to retain newly trained staff.
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