Lopare

Program of works for the rehabilitation of water losses in the water supply system of Lopare

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REDUCTION OF WATER LOSSES IN THE LOPARE SYSTEM

The Municipality of Lopare, together with the JKP "Vodovod" Lopare, has prepared a program of works for the rehabilitation of water losses in the water supply system of Lopare. The main goal of the mentioned Program of Works is the definition of certain losses, i.e., uncontrolled leakage from the water supply network, which will be eliminated through other activities. The result of detection of losses and subsequent elimination should lead to a reduction of losses in the water supply system of Lopare.

Vodovodna mreza In order to prepare for the implementation of the activities in question from the Work Program at the end of 2022, together with the representatives of JKP "Vodovod" Lopare, we visited the distribution water supply system of Lopar and collected basic information about it.

According to the Work Program in question, the contractor for loss testing is required to perform two tasks:

  • Investigation of water losses in the city's distribution network, which includes the execution of the required number of simultaneous flow measurements for the purposes of confirming/controlling the water balance, as well as the required number of pressure measurements and noise recording with correlators and noise recorders on all main distribution pipelines.
  • Training of local staff to work with FUJI water loss research equipment, which the Municipal Administration received as a donation.

It should be noted that the plan is to train local staff during the period of loss investigation, using practical examples.

Also, the Work Program defined that the Contractor must carry out the following activities during the investigation of water losses:

  • Preparation of bases for the display of the distribution water supply system of Lopare;
  • Flow measurement;
  • Pressure measurement;
  • Noise measurement;
  • Other measurements that are determined to be necessary;
    After the field visit and the analysis of the transmitted data, it can be concluded that the losses in the water supply system of Lopare are about 60%, which will be additionally checked and confirmed by measurements.

The goal is to provide sufficient amounts of clean (drinking) water and create opportunities for expanding the existing network, given that the coverage of the municipality of Lopare by the water system is currently very low, around 30% of the population.

The mentioned activities will be financed from the own funds of the municipality of Lopare, EIB loans and Grant funds from the Government of the Republic of Srpska.

poslovna zona bl

Control of the condition of the water supply network in the Business Zone BL

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Control flow measurement and consumption analysis

Based on previously successful cooperation in metering, analysis of the state of the water supply network and fault detection on the same, we were invited by the management of the Business Zone to perform measurements and analysis of consumption in the water supply system within the "Business Zone".

After monitoring the water consumption on the water supply system "Business Zone", the difference in consumption was recorded by reading the main water meter and water meters of consumers who are leased business premises, as well as owned, and who are supplied through it.

According to the data, the difference in the monitoring of consumption by the technical service "Business Zone" is about 100m³ on a monthly basis for about 60 internal consumers.

Flow measurement and consumption comparison

Due to all the above, the engaged team "NMAqua" s.p. is on 05.01.2020. year, the installation of an ultrasonic flow meter was performed. The flow meter is programmed to operate and store data at an interval of 1 min and a time period of 72 hours, in order to obtain the most accurate state of the network.

Mjerenje protoka

Due to the impossibility of installing a flow meter in the water meter shaft in which the water meter is installed, through which the complete "Business Zone" is supplied with water, an alternative measuring point has been determined where quality flow control and measurement can be performed, which is in front of the water meter

Mjerač protoka

The main goal was to record the condition of the network, ie to measure the flow at night, in order to eliminate any possibility of any consumption on the installations.

By analyzing the obtained results and flow diagrams, we recorded at that time that there is no water consumption at night in the water supply network, as well as in installations, which indicates a difference in reading the main water meter and total consumption of user water meters, as well as inaccuracies of old meters.

Occurrence and detection of fault location

However, after a short time, there was a problem with an average difference on a daily basis of about 35m³, which indicated abnormal consumption or the existence of uncontrolled discharge.

By engaging the NMQau team, measurements were performed on the arms, with the manipulation of individual parts, as well as the consumers themselves. Based on the data, a malfunction was found on the part of the water supply network on the PEHD Ø110mm pipeline which is supplied to Nova banka.

An acoustic sound detector test determined the exact location of the fault on the asphalted part of the bank's parking lot

Detekcija kvara

An excavation was carried out, during which a fault was confirmed at the pipe joint at the mentioned location.