IGEM/GM/8 - Non-domestic meter installations - Part 1 - Design
This standard covers the basic design principles and functions
required of gas meter installations.
These procedures apply to all new, onshore, gas supply meter
installations of flow rate > 6m3 h-1 and
MOP upstream ≤ 38 bar. It covers diaphragm, rotary displacement,
turbine and ultrasonic meters. They cover installations intended to
carry Natural Gas that are wholly downstream of the emergency
control valve, in which case the installation is not part of the
network. It contains details of:
- Legal considerations such as Gas Safety (Installation and Use)
Regulations and Electricity at Work Regulations.
- Design objectives and principles, including accuracy and
- Information exchange requirements between all parties
- Gas transport authorisations, including for meter installations
and meter by-passes.
- Design considerations such as gas velocity, noise, heating,
provision and arrangement of components.
- Gas cleaning, including filtration.
- Pressure control, including regulator selection and required
- Slam-shut valve systems.
- Pressure (creep) relief.
- Meter requirements and factors affecting meter selection,
accuracy and performance.
- Valve types and uses.
- Selection of material and pipework requirements.
- Supports and framework
- Ancillary connections such as pressure test and temperature
- Vent pipework for breathers, vent lines and creep relief vent
- Electrical equipment, lightning, earthing and lighting.