Lng tanks rely on abb instrumentation

Temperature and pressure sensors from ABB's UK Measurement Products business are helping to maintain safety at the world's largest above ground liquid natural gas (LNG) tanks at National Grid's Isle of Grain terminal.

The four 50m high tanks, each holding 200,000m3 of LNG, form Phase 2 and 3 of an expansion plan that will eventually see the site capable of supplying 20% of the UK's gas demand. For Phase 2, ABB supplied 93 temperature units and 99 pressure units, while for Phase 3, it supplied 74 temperature units and 140 pressure units.

These are used throughout the site on every process line and utility. A typical application is in the management of boil-off vapour, which is produced in the tanks and liquid fill lines during normal operations by heat transfer from the surroundings.

Some of the ABB temperature sensors are of a clamp-on design, allowing them to be installed around the pipe work rather than needing to intrude through the pipe wall.