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
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
- Commissioning and system performance checks.
- Validation of a system
- Monitoring, inspection and maintenance of systems.
- Records and reporting.