severe restrictions on the hours of supply were not in themselves sufficient to ensure that adequate reserves would be held to maintain the supply until the next rainy season.
276. A rapid review of possible additional sources of supply and of the equipment available was accordingly made and it was decided that two pumping schemes offered a practical solution to the problem. The first, which was comparatively simple, consisted of pumping water from the Shing Mun River at Shatin against the static head of approximately 500 feet to the Beacon Hill catchwater. The diesel pump unit was removed for this purpose from the Rumsey Street Pumphouse of the Salt Water Pumping Scheme and installed at Shatin; an intake was constructed on the stream and 3,900 feet of 8 inch pipe laid to Beacon Hill catchwater. Work was completed and the scheme which was put into operation on the 21st December resulted in an additional 800,000 gallons per day being supplied to Kowloon Reservoir.
277. The second scheme was more elaborate and provided for the construction of an intake dam on the Lam Tsuen Valley stream and another on the large stream which flows into the sea to the east of Tai Po Market. It involved the laying of 600 feet of 12 inch, 1,500 feet of 15 inch and 15,000 feet of 18 inch piping and the installation of five pumping stations, housing seven pumping units, to pump the water by stages over the 1,300 feet high Lead Mine Pass and into the Jubilee Reservoir.
278. The pumps taken for the scheme were the Booster pump from the Aberdeen trunk main and one diesel set from a dismantled P.W.D. dredger for use at the Lam Tsuen stream intake; the diesel and two electrically driven sets, which had been received for the New Tsun Wan Pumping Station, for use at the second intake and at the first and second booster stations respectively; and the two small electric sets from Tytam Tuk for the final boost below Lead Mine Pass. This scheme was completed in February and commenced delivering water to Jubilee Reservoir at the rate of 2 million gallons per day towards the end of the month. By the end of March the two schemes had added 131 million gallons to the resources.
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severe restrictions on the hours of supply were not in them- selves sufficient to ensure that adequate reserves would be held to maintain the supply until the next rainy season.
276. A rapid review of possible additional sources of supply and of the equipment available was accordingly made and it was decided that two pumping schemes offered a practical solution to the problem. The first, which was comparatively simple, consisted of pumping water from the Shing Mun River at Shatin against the static head of approximately 500 feet to the Beacon Hill catchwater. The diesel pump unit was removed for this purpose from the Rumsey Street Pumphouse of the Salt Water Pumping Scheme and installed at Shatin; an intake was con- structed on the stream and 3,900 feet of 8 inch pipe laid to Beacon Hill catchwater. Work was completed and the scheme which was put into operation on the 21st December resulted in an additional 800,000 gallons per day being supplied to Kowloon Reservoir.
277. The second scheme was more elaborate and provided for the construction of an intake dam on the Lam Tsuen Valley stream and another on the large stream which flows into the sea to the east of Taipo Market. It involved the laying of 600 feet of 12 inch, 1,500 feet of 15 inch and 15,000 feet of 18 inch piping and the installation of five pumping stations, housing seven pumping units, to pump the water by stages over the 1,300 feet high Lead Mine Pass and into the Jubilee Reservoir.
278. The pumps taken for the scheme were the Booster pump from the Aberdeen trunk main and one diesel set from a dismantled P. W. D. dredger for use at the Lam Tsuen stream intake; the diesel and two electrically driven sets, which had been received for the New Tsun Wan Pumping Station, for use at the second intake and at the first and second booster stations respectively; and the two small electric sets from Tytam Tuk for the final boost below Lead Mine Pass. This scheme was completed in February and commenced delivering water to Jubilee Reservoir at the rate of 2 million gallons per day towards the end of the month. By the end of March the two schemes had added 131 million gallons to the resources.
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