New Pumping Plant
302. Cheung Chau Island. The installation of an additional pumpset ordered in 1957 together with its ancillary equipment doubled the capacity of the pumping station and permitted a much improved supply to the Island.
Supply Tunnels
303. During April a considerable leakage developed from the tunnel carrying raw water from the Tai Lam Chung Reservoir at a point where it emerges from the hillside to join a steel pipeline at Sham Tseng. The tunnel had to be put out of service while the concrete lining was repaired and the surrounding rock drilled and grouted. These repairs did not prove completely successful and further leaks in December again put the tunnel out of action. In addition to further extensive grouting, a 30-inch diameter steel pipe was laid in the tunnel to link the portal to a point beyond the doubtful section, a distance of approximately 400 feet. The work proceeded non-stop for twenty-four hours a day and took twenty-two days to complete.
Tsuen Wan Supply
304. The laying of mains continued as an extension to the distribution system.
Kwun Tong Development, Stages I and II and Housing Zone No. 1
305. Work continued on the laying of mains and sub-mains forming the distribution system for Housing Zone 1 and the reclamation.
Tai Lam Chung Scheme
306. The installation of an additional pump set of 10 million gallons per day in the Tsuen Wan Pumping Station enabled the second half of the filter station completed in 1957/58 to be used, and increased the capacity of the system to about 35 million gallons a day. 5,951 million gallons were supplied from this scheme over the whole year, an average of about 16.1 million gallons a day.
307. Further notes on this scheme are given in the Construction Section of this Report.
Waterworks Staff Quarters
308. Filtration staff occupied a new 3-storied block of quarters at Tsuen Wan, and reservoir maintenance staff took over quarters at Tai Lam Chung from the Chief Resident Engineer. New quarters at the Pok...
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New Pumping Plant
302. Cheung Chau Island. The installation of an additional pumpset ordered in 1957 together with its ancillary equipment doubled the capacity of the pumping station and permitted a much improved supply to the Island.
Supply Tunnels
303. During April a considerable leakage developed from the tunnel carrying raw water from the Tai Lam Chung Reservoir at a point where it emerges from the hillside to join a steel pipeline at Sham Tseng. The tunnel had to be put out of service while the concrete lining was repaired and the surrounding rock drilled and grouted. These repairs did not prove completely successful and further leaks in December again put the tunnel out of action. In addition to further extensive grouting, a 30-inch diameter steel pipe was laid in the tunnel to link the portal to a point beyond the doubtful section, a distance of approximately 400 feet. The work proceeded non-stop for twenty four hours a day and took twenty two days to complete.
Tsuen Wan Supply
304. The laying of mains continued as an extension to the distribu- tion system.
Kwun Tong Development, Stages I and II and Housing Zone No. 1
305. Work continued on the laying of mains and sub-mains forming the distribution system for Housing Zone 1 and the reclamation.
Tai Lam Chung Scheme
306. The installation of an additional pump set of 10 million gallons per day in the Tsuen Wan Pumping Station enabled the second half of the filter station completed in 1957/58 to be used, and increased the capacity of the system to about 35 million gallons a day. 5,951 million gallons were supplied from this scheme over the whole year an average of about 161 million gallons a day.
307. Further notes on this scheme are given in the Construction Section of this Report.
Waterworks Staff Quarters
308. Filtration staff occupied a new 3-storied block of quarters at Tsuen Wan, and reservoir maintenance staff took over quarters at Tai Lam Chung from the Chief Resident Engineer. New quarters at the Pok
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