DCS (Distributed Control System) Replacement
on Old LNG Carriers

Mitsubishi Heavy Industries Marine Machinery & Equipment received two orders for work to replace the Distributed Control System (DCS) on two LNG carriers built at the Nagasaki Shipyard & Machinery Works of Mitsubishi Heavy Industries.
We are currently working on their design and manufacture to have them ready for delivery in April and August 2026, respectively.
To ensure the safe operation of the boiler and turbine control systems (Boiler ACC BMS: Automatic Combustion Control Burner Management System; Turbine MTRCS: Main Turbine Remote Control System) installed on LNG carriers over the long term, we recommend replacing control systems that have become obsolete.
For LNG carriers that DCS control is installed, we can help by carrying out to separate our boiler and turbine controllers, which use control systems incorporated into a DCS into standalone systems, in cases where the DCS supplier no longer offers service support or it is difficult for them to replace the system. As another option, we have begun to propose replacing entire control systems incorporated into a DCS in cooperation with DCS manufacturers.
LNG is currently the subject of attention as a transition energy geared towards carbon neutrality. We have delivered a large number of main steam engine plant control systems for LNG carriers, and are actively engaged in the maintenance of our equipment that is in operation around the world.
In order to maintain the stable marine transportation of energy resources in Japan and abroad, using the experience and technology we have cultivated, we will continue to provide solutions for control system modification and replacement tailored to your needs.
Please submit any inquiries to [email protected].