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IGEM/GM/5 Electronic gas volume conversion systems

This Standard contains guidance on the appropriate installation and usage of systems designed to convert gas volume readings to base conditions.

This Standard covers electronic gas volume conversion systems. However, many principles may equally be applied to flow computers and procedures for flow computers are included where appropriate. It is not intended to be used in conjunction with high accuracy meter installations where, for example, flow computers are configured to receive live data of gas composition. It covers installation, commissioning, validation, monitoring and maintenance of systems that convert gas volume readings to base conditions by taking into account temperature, pressure, and if appropriate, compressibility of the gas. In general they are not used at Operating Pressure exceeding 7 bar. The systems covered within may be designed for installation in either indoor or outdoor environments. Suitably designed systems may be installed in hazardous areas. Specifically, it contains details of:

  • Legal considerations such as Gas Safety (Installation and Use) Regulations  and the Health and Safety at Work etc. Act.
  • Pre-installation tests
  • Design and installation, including positioning and connecting of the components, along with security of the conversion systems.
  • Commissioning and system performance checks.
  • Validation of a system
  • Monitoring, inspection and maintenance of systems.
  • Records and reporting.

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