Demand Area & Leakage Analysis in InfoWorks WS Pro

This course is aimed at Infoworks users who need to identify system losses or want to have "online" operational models. The course concentrates on flow balances in order to carry out demand allocation along with leakage analysis and level of service monitoring. Other subjects covered included the design and implementation of pressure managed areas and the concept of equivalent service pipe bursts.

Demand area analysis automatically and reliably calculates and distributes water consumption across the network based on DA boundaries, live data and demand categories (domestic, commercial, industrial, recreational, etc.). Clients with live data read from online SCADA and Telemetry systems are provided with a method to instantly update demand allocations based on the current system operation. Allowing models to be used for online operational modelling along with providing truthful, up to date data to improve model calibration.

DA analysis provides an audit trail for your flow balance and leakage analysis and removes the need for complicated and often messy and inaccurate spreadsheets. A report produced in either HTML or clipboard format provides summary information, which is further supplemented by graph and grid functionality within the DA property sheet.

The new Demand Area Window that has been added provides a Flow Balance and Leakage Analysis tool based on online data. Live data and simulation results can be used to view flow balances, leakage calculations and expected leakage calculations for individual DAs.

Leakage analysis is carried out using proven equation and incorporates the analysis of pressure zones and average zone night pressure within DAs. It can be used to consider both existing systems and future system conditions using the Infrastructure correction factor. The analysis allows leakage to be applied by varying methods depending on your geographic location and available data set e.g. rural leakage application may require applying based on length of mains rather than unmetered allocations.

Target points can be assigned or calculated for DAs to allow level of service monitoring at either nodes or customer points.

Prerequisites: A basic level of proficiency in the Microsoft Office and Windows environment is assumed and a fundamental understanding of the operation of a water distribution system is expected. A working knowledge of InfoWorks is also required.

The course covers the following topics:

  • Demand allocation from billing records
  • Demand allocation from land use information
  • Demand definition using SCADA data
  • Demand pattern identification from SCADA data
  • Leakage estimation
  • Pressure zones definition and management
  • Level of service monitoring
  • Equivalent service pipe burst analysis
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