1950 — Page 46

Public Works Department Annual Report 工務司署年報 All AI Reviewed

216. Periods when water was lost by overflow were:-

Reservoir Overflow Periods.

Tytam Tuk ISLAND.

45 days between 8th and 24th August, 1949
1st and 2nd Sept., 1949
8th and 14th Sept., 1949
17th Sept., 1949
21st Sept. and 2nd October, 1949
8th and 13th October, 1949

Aberdeen Lower 116 days between 28th June and 21st October, 1949

Pokfulam 20 days between 25th and 28th June, 1949

Kowloon Byewash... MAINLAND.

62 days between 6th and 23rd August, 1949
25th August, 1949
31st August and 5th Sept., 1949
8th Sept., and 14th October, 1949

Jubilee 82 days between 16th and 30th July, 1949
1st and 27th August, 1949
31st Aug. and 4th October, 1949
8th and 12th October, 1949

217. After consideration of various methods of dealing with the leakage through the 30" Scour Valve at Jubilee Dam (referred to in paragraph 199 of last year's Report) it was decided to refer the matter to the Consulting Engineers for the Dam—Messrs. Binnie, Deacon & Gourley. Their recommendation was that the Bombay representative of Messrs. Glenfield & Kennedy, Ltd., the manufacturers of the Valve, should go to Hong Kong to advise after inspection on the site. Arrangements were made accordingly and a Mr. Cunningham duly arrived in October and prepared his report. His suggestion was to fix the new replacement valve in the Recorder House at the downstream face of the Dam and then seal up the defective valve permanently by placing a steel chamber over it and concreting the chamber in. This proposal was accepted and by the end of the year all the necessary designs had been prepared and the materials fabricated in preparation for carrying out the work when the water level in the reservoir reached its lowest level, probably in April 1950.

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36 216. Periods when water was lost by overflow were:- Reservoir Overflow Periods. Tytam Tuk ISLAND. 45 days between 8th and 24th August, 1949 1st and 2nd Sept., 1949 8th and 14th Sept., 1949 17th Sept., 1949 21st Sept. and 2nd October, 1949 8th and 13th October, 1949 Aberdeen Lower 116 days between 28th June and 21st October, 1949 Pokfulam 20 days between 25th and 28th June, 1949 Kowloon Byewash... MAINLAND. 62 days between 6th and 23rd August, 1949 25th August, 1949 31st August and 5th Sept., 1949 8th Sept., and 14th October, 1949 Jubilee 82 days between 16th and 30th July, 1949 1st and 27th August, 1949 31st Aug. and 4th October, 1949 8th and 12th October, 1949 217. After consideration of various methods of dealing with the leakage through the 30" Scour Valve at Jubilee Dam (referred to in paragraph 199 of last year's Report) it was decided to refer the matter to the Consulting Engineers for the Dam—Messrs. Binnie, Deacon & Gourley. Their recommendation was that the Bombay representative of Messrs. Glenfield & Kennedy, Ltd., the manufacturers of the Valve, should go to Hong Kong to advise after inspection on the site. Arrangements were made accordingly and a Mr. Cunningham duly arrived in October and prepared his report. His suggestion was to fix the new replacement valve in the Recorder House at the downstream face of the Dam and then seal up the defective valve permanently by placing a steel chamber over it and concreting the chamber in. This proposal was accepted and by the end of the year all the necessary designs had been prepared and the materials fabricated in preparation for carrying out the work when the water level in the reservoir reached its lowest level, probably in April 1950. Page 37

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36 216. Periods when water was lost by overflow were:- Reservoir. Tytam Tuk Aberdeen Lower Pokfulam Kowloon Byewash... Jubilee Overflow Periods. ISLAND. 45 days between 8th and 24th August, 1949 1st and 2nd Sept., 1949 8th and 14th Sept., 1949 17th Sept., 1949 21st Sept. and 2nd October, 1949 8th and 13th October, 1949 116 days between 28th June and 21st October, 1949 20 days between 25th and 28th June, 1949 16th and 17th August, 1949 1st Sept., 1949 9th Sept., 1949 11th and 12th Sept., 1949 21st and 28th Sept., 1949 8th October, 1949 16th November, 1949 MAINLAND. 62 days between 6th and 23rd August, 1949 25th August, 1949 31st August and 5th Sept., 1949 8th Sept., and 14th October, 1949 82 days between 16th and 30th July, 1949 1st and 27th August, 1949 31st Aug. and 4th October, 1949 8th and 12th October, 1949 217. After consideration of various methods of dealing with the leakage through the 30" Scour Valve at Jubilee Dam (referred to in paragraph 199 of last year's Report) it was decided to refer the matter to the Consulting Engineers for the Dam-Messrs. Binnie, Deacon & Gourley. Their recommenda- tion was that the Bombay representative of Messrs. Glenfield & Kennedy, Ltd., the manufacturers of the Valve, should go to Hong Kong to advise after inspection on the site. Arrange- ments were made accordingly and a Mr. Cunningham duly arrived in October and prepared his report. His suggestion was to fix the new replacement valve in the Recorder House at the downstream face of the Dam and then seal up the defective valve permanently by placing a steel chamber over it and con- creting the chamber in. This proposal was accepted and by the end of the year all the necessary designs had been prepared and the materials fabricated in preparation for carrying out the work when the water level in the reservoir reached its lowest level, probably in April 1950. Page

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216. Periods when water was lost by overflow were:-

Reservoir.

Tytam Tuk

Aberdeen Lower

Pokfulam

Kowloon Byewash...

Jubilee

Overflow Periods.

ISLAND.

45 days between 8th and 24th August, 1949

1st and 2nd Sept., 1949

8th and 14th Sept., 1949

17th Sept., 1949

21st Sept. and 2nd October, 1949 8th and 13th October, 1949

116 days between 28th June and 21st October, 1949

20 days between 25th and 28th June, 1949

16th and 17th August, 1949

1st Sept., 1949

9th Sept., 1949

11th and 12th Sept., 1949

21st and 28th Sept., 1949 8th October, 1949

16th November, 1949

MAINLAND.

62 days between 6th and 23rd August, 1949

25th August, 1949

31st August and 5th Sept., 1949 8th Sept., and 14th October, 1949

82 days between 16th and 30th July, 1949

1st and 27th August, 1949 31st Aug. and 4th October, 1949 8th and 12th October, 1949

217. After consideration of various methods of dealing with the leakage through the 30" Scour Valve at Jubilee Dam (referred to in paragraph 199 of last year's Report) it was decided to refer the matter to the Consulting Engineers for the Dam-Messrs. Binnie, Deacon & Gourley. Their recommenda- tion was that the Bombay representative of Messrs. Glenfield & Kennedy, Ltd., the manufacturers of the Valve, should go to Hong Kong to advise after inspection on the site. Arrange- ments were made accordingly and a Mr. Cunningham duly arrived in October and prepared his report. His suggestion was to fix the new replacement valve in the Recorder House at the downstream face of the Dam and then seal up the defective valve permanently by placing a steel chamber over it and con- creting the chamber in. This proposal was accepted and by the end of the year all the necessary designs had been prepared and the materials fabricated in preparation for carrying out the work when the water level in the reservoir reached its lowest level, probably in April 1950.

1950 — Page 46

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