Evaluate data to identify potential leakage

Overview

This Standard is about evaluating data to identify potential leakage.  This includes obtaining relevant data, analysing it against expectations, identifying the need for further investigations, identify areas of potential leakage and calculating potential water loss.

This Standard is for anyone who evaluates data to identify potential leakage.

Performance Criteria

You must be able to:

  1. obtain complete sets of data from specified control and monitoring activities
  2. use a combination of data from different sources and points on the distribution system to obtain a comprehensive picture of flow and pressure in specified areas
  3. analyse data received against expected data patterns taking into account any relevant additional information about network condition, network operations or consumption variations
  4. establish the type and nature of any differences which appear in data analysis in accordance with approved procedures and practices
  5. identify the need for further investigations when a viable explanation of identified differences cannot be found
  6. report details of the need for further investigations to relevant people
  7. formulate conclusions about the way the distribution system is operating based on accurate analysis and interpretation of data
  8. base conclusions on thorough and reliable analysis and interpretation of data from control and monitoring activities
  9. highlight and inform relevant people about any areas which appear to be exhibiting leakage problems
  10. estimate water loss from specified areas according to data analysis and conclusions reached
  11. record detail of area characteristics and water loss calculations in
  12. appropriate formats in accordance with approved procedures and practices

Knowledge & Understanding

You need to know and understand

  1. the purpose of control and monitoring activities
  2. the consequences of incorrectly performing control and monitoring activities
  3. how to interpret data from different control and monitoring activities
  4. factors which affect network performance including abnormal events
  5. how to read and interpret information about flow, pressure, water quality and customer contacts,
  6. why you may be unable to analyse data
  7. reporting procedures including the use of feedback from previous investigations
  8. how to interpret data
  9. types of leakage problems and ways they manifest themselves on the network
  10. sources of information on network condition, network operations, consumption variations, previous investigations and area characteristics
  11. how to relate analysed data to network plans
  12. how to calculate water loss
  13. recording and reporting requirements
  14. the factors to be taken into account when making a judgement about leakage problems
  15. health, safety and hygiene requirements