The OpreX Water Loss Management System (OW-LS) is a software product that detects water leakage occurrences at the District Metered Area (DMA) level, calculates the percentage of Non-Revenue Water (NRW), and provides optimized pressure management.
About OpreX Water Loss Management System OW-LS
What is "OW-LS" ?
OpreX Water Loss Management System OW-LS (hereinafter abbreviated as OW-LS) is a software product that detects and manages water leaks in water networks built based on DMA. It has the following three functions.
- Understanding the NRW rate in DMA by creating a Water Balance Sheet based on IWA guidelines
- Detection of increased water leakage within DMA
- Reducing the amount of water leakage by lowering the pressure of the entire DMA
The details of the functions are written in "Details".
Details
Water Balance(WB) Function
This function sets and displays data of each element according to the water balance table proposed by the International Water Association (IWA), based on the amount of inflow from the main pipe into the DMA and the amount of consumption obtained by using the water meters in the DMA. It also has a pie chart function, which shows the non-revenue water (NRW) ratio or the ratio of other parameters on the water balance table as a pie chart.
WB Standard screen
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Night Flow Analysis(NFA) Function
This function is used to find out the consumption or change rate in consumption within the DMA during the lowest water consumption time of day (commonly considered to be 2:00 am – 4:00 am) and set an alarm for them. The change in consumption during this time can be used to determine the potential for increased leakage within the DMA.
NFA Daily Trend screen
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Pressure Management (PM) Function
This function enables customers to find out the appropriate pressure setting value of the PRV(Pressure Reducing Valve) at the inlet of DMA.
The lower the pressure value set to the PRV is, the lower the pressure throughout the DMA is, as a result, the lower the amount of water leakage is in the DMA. The lowest pressure point in the DMA is called Critical Point (CP), and usually corresponds to the highest altitude. Customers can simulate the lowest inlet pressure value based upon the simulated data in the specified period to find out the lowest but enough pressure value to maintain the pressure within the DMA, especially at CP.
In the PM simulation, customers can simulate the pressure based on two different types of settings. One is "MNF (Minimum Night Flow) minimum day basis", which uses the MNF rates and pressures. The other is "All day basis", which relies on the MAX, MIN or Average data of flow-rates and pressures measured over multiple days.
PM Simulation screen
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