Investigation of losses at the Gradiška Customs Terminal

Inspection and control of sanitary water supply network

Based on the Contract for the execution of works on the detection of invisible loss with the company "ECO trade" d.o.o. Gradiška, in June.2019. The team for measurements and research of losses on water supply systems of the company NMAqua, performed, inspection, control and measurement on the water supply system of the new border crossing in Gradiška.

New Customs Terminal Gradiška

Flow control on the water meter

On that occasion, an ultrasonic flow meter was installed in the water meter shaft on the installation behind the water meter with a diameter of DN100 mm. The purpose of the measurement is to monitor the current state of the network, during the research and manipulation of the network. Preliminary control and inspection determined the existence of a malfunction on the sanitary network, while no more visible losses were noticed on the hydrant installation.

Initial flow measurement results showed a value between 1.3 l / s to 1.6 l / s. Based on the situation on the ground, where there are currently no consumers, it was evident that there was a significant leak and loss on the installation of the sanitary network.

Based on preliminary measurements, the monthly loss was about 3758.40 m³.

Installation and shaft control

The network was checked and controlled, based on the situation with the condition of the water supply installations from the water meters to the facilities.

On that occasion, a visual and physical inspection of the valve in the pump substation was performed, as well as the line shafts in which the valve is located. Inspection and control was performed first on the main direction of the pipeline, and then on its side branches.

Locating the fault location

The investigation led to the location of the fault and located the problem. The mentioned part of the abandoned installation is blocked, and in the part of the business department "F" and "D", detected defects on the cisterns, which are out of order, are blocked.

After several days of control of the water meter, it was determined that there are no uncontrolled leaks and losses at the sanitary installation, and the Project was successfully completed.