New generators installed at enhanced National Grid’s Grain LNG site
22 Jan 2019
The National Grid’s Grain LNG terminal in Rochester has completed the installation of two 7000kg/h VPX Rapid Steam Generators.
Work carried out by Babcock Wanson followed a substantial increase in the site’s handling capacity and the addition of new tanks that have quadrupled storage capacity available.
The increase prompted the National Grid’s decision to upgrade the process heating system and replace the two 3.5 tonne boilers it had previously employed.
The new vertical coil steam generators include three full gas passes, plus an in-built combustion air pre heater to give high operating efficiency.
Fully automated with automatic unattended start and stop capability, they have been designed with specialist PLC interfaces and controls, which also enable automatic changeover between the two generators on demand. They have also been adapted to operate at a lower steam pressure to work with the existing system on site.
Grain LNG is the largest terminal in Europe and eighth largest in the world by tank capacity (1,000,000m3), with a site that spans over 600 acres in total.