driving turbines or motors, were invited in May, following scrutiny and agreement of the documents by the Asian Development Bank, which has provided loan facilities for the purchase of the plant. A contract in the sum of $337 million was awarded to a Japanese engineering firm.
11.70 Two associated nominated sub-contracts for lighting and other electrical work in the administration building and for intake screens and ancillary equipment were awarded. An inspection service contract in connection with the manufacture of boilers, evaporators and ancillary equipment was awarded.
11.71 Tenders for steam turbine generators, electrical installation, instrumentation and controls, air conditioning plant and lifts were invited towards the end of the year and drafting of specifications for other minor associated contracts continued.
General
WATER QUALITY CONTROL UNIT
Senior Waterworks Chemist:
D. L. MAKER, A.R.I.C., P.A.I.W.E.
11.72 This Unit is responsible for controlling water treatment at filter stations and for maintaining a satisfactory quality of supply throughout the distribution system. It operates two main and two subsidiary laboratories for testing water samples and miscellaneous materials connected with the water supply industry.
11.73 The Unit also carries out investigations into improved or more economical methods of water treatment and deals with various problems arising in connection with water quality. Its analytical and advisory services are utilized in the planning and commissioning of new supply projects and by other government departments, commercial and industrial firms, and the general public.
11.74 The total number of samples examined increased by 14% to 38,659, of which 64% were for chemical testing, while 20% and 16% were for bacteriological and biological examination respectively. Other government departments, etc. submitted 1,148 samples, a 4% increase. In addition, a large number of analyses were carried out on stream samples in connection with the North Western Water Scheme Pollution Study on behalf of the consultants engaged on the study.
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