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Trial run begins for bringing borewell water to Chennai

By Our Special Correspondent

VILLUPURAM, MAY 25. Trial run of water release into pipelines (for carrying it to Chennai) from the Kadampuliyar overhead tank has started.

Under heavy pressure, the pipeline is developing leaks at certain points, according to sources.

For the second time, the pipeline in the Vikkiravandi section near Villupuram developed a leak yesterday, pushing water to a height of over 20 feet. Experts plugged the leak after a two hour effort.

Sources said that before the system became operational, the trial run would have to be carried out for one-three months, depending upon the stability of the system.

Through the trial run, weak points could be identified and suitable remedial measure could be taken to either strengthen or replace the leaking pipes.

The sources said water was flowing from the Kadampuliyur overhead tank, situated at 105 metres above the mean sea level (MSL) into the pipeline at 42 metres above MSL. Therefore, heavy pressure would build up in the pipeline resulting in airlock and bursting of pipes at times.

This was a common phenomenon during laying of a new pipeline system, and there was no cause for concern.

The sources stated that at present water drawn from the borewells was being pumped in.

Though, the water level in the Veeranam tank was quite comfortable at about 41 feet now, against the maximum level of 45 ft., it could not be drawn, because a section of the main pipeline was yet to be completed.

Moreover, the Public Works Department should work in coordination with Metrowater officials. For instance, all along the Veeranam tank bund, there were over 50 valves for letting out water through channels for irrigation.

Only after these valves were made leak-proof could the required quantum be drawn from the tank.

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