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Gas Technology Services P/L

Gas Technology Services P/L. CMRS Customer Meter Reading Service Presentation. Gas Technology Services P/L. Overview of Gas Technology Services (GTS) Overview of Gas Measurement How flow computers log metering data Extraction of metering data from flow computers Overview of CMRS Online

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Gas Technology Services P/L

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  1. Gas Technology Services P/L CMRS Customer Meter Reading Service Presentation

  2. Gas Technology Services P/L • Overview of Gas Technology Services (GTS) • Overview of Gas Measurement • How flow computers log metering data • Extraction of metering data from flow computers • Overview of CMRS Online • Retail clients accessing CMRS

  3. Overview of GTS • Independent Company • > 25 years experience in Gas • National experts in gas flow • Analysis of Gas Composition and Odour • Testing of Gas Appliances for Manufacturers • Calibration of Gas Detectors / Gas Equipment • Gas Flow Metering • Field Calibration • Data Collection

  4. Overview of Gas Measurement • How is Natural Gas Flow Measured? • How is Natural Gas Flow Recorded?

  5. Overview of Gas Measurement • Effects of Pressure on Gas Volume • Effects of Temperature on Gas Volume • If you pressurise and cool gas, you can fit more in a given area • Resulting in a correction factor

  6. Calculates True Volume (Sm3) Pressure measured in Kpa Turbine Meter (Uncorrected flow) Temperature in Deg C Gas Flow Corrector Calculates true volume in Sm3 Records Hourly Data

  7. Corrected (True) Volume = Uncorrected Volume X Correction Factor Corr.Factor = (Gas Press+101.325) X (273.515) (Gas Temp. + 273.15) X 101.325 ) X FPV 2

  8. Corrected (True) Volume = Uncorrected Volume X Correction Factor Corr.Factor = (Gas Press+101.325) X (273.515) (Gas Temp. + 273.15) X 101.325 ) X FPV 2

  9. How flow computers log metering data • Metering data is logged at 60 min intervals • Gas Temperature in Degrees Celcius • Gas Pressure in kilo pascals (gauge) (kPaG) • Uncorrected Volume in cubic meters (m3) • Corrected Volume in standard cubic meters (SM3)

  10. Extraction of metering data from flow computers • Daily extraction – telemetry sites • Monthly extraction – non telemetry sites

  11. GSM Telemetry OR Daily data extraction Monthly data extraction GTS Port Melbourne Desktop Modem Hand Held Reader Collection of raw hourly Data

  12. Extracted metering data What happens to data once it has been collected?

  13. Validation of extracted metering data • Metering Data is uploaded into CMRS and validated • What is Data Validation?

  14. Validation of extracted metering data • Data Validation is • The application of predetermined tolerances to Gas Measurement Attributes

  15. Validation of extracted metering Data For a given Metering site • Expected Correction Factor • Expected Gas Pressure • Contract Maximum Hourly Quantity Limit • Contract Maximum Daily Quantity Limit • More than 72 hours consecutive zero flow records

  16. Validation of extracted metering Data Metering data can be wrong • Mechanical Meter Failure (Results in zero records) • Flow Corrector / Data Logger Can Fail • Pressure Transducer (Out of calibration or faulty) • Temperature Transducer (Out of calibration or faulty) • Corrupt Profile Data

  17. Validation of extracted metering data For Validation Log Example Please refer to hand out

  18. Validation of extracted metering data What can happen if Metering Data is not Validated?

  19. Metering Pressure fault example

  20. Previous example can cause • Unnecessary substitution • Un monitored MHQ & MDQ breakages • Incorrect billed customers • Times wasted • Unhappy customers

  21. Overview of CMRS On - Line • Web based Gas meter reading service • For Gas Retailers • For Gas Retail customers

  22. Conclusion • Validation of gas meter data is important • The service provided by GTS ensures that Retailers have correct metering data for client contracts • Technical support provided by GTS • Retail clients can access their metering data online

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