Controller Retrofitting for Aged LNG Carrier

Mitsubishi Heavy Industries Marine Machinery & Equipment Co., Ltd. has a proven track record of having retrofitted our boiler and turbine controllers on more than 110 systems for LNG carriers and recently completed its first retrofitting work which sets up individual standalone boiler control panel by separating its functionality from a distributed control system (“DCS”) originally installed in the vessel.

We recommend the replacement of aging controllers for boilers and turbines installed on LNG carriers to ensure their safe, long-term operation. We began a service for systems incorporated into a DCS, which separates boiler and turbine controllers from a DCS into a standalone system without the assistance of a DCS manufacturer. After a retrofit to separate the controller, it becomes possible for us to carry out services specialized for boiler and turbine controllers, thereby enabling speedy troubleshooting.

In terms of performance, a gateway (*1) is set up on the controller of an independent system to enable data communication with the existing DCS so as to achieve operability equal to that of the controller incorporated in the DCS prior to a retrofit. What is more, the DCS parts, etc., that were used for the boiler controller can be kept as spare parts for that ship, which will help customers secure spare parts in the case that the DCS for portions other than a discontinued boiler will continue to be used.

We will continue to utilize the experience and technical capabilities accumulated up to now to provide controller modification solutions in ways that meet customer requests.

(*1) Gateway:
A device that relays communication between two devices and networks that utilize different communication methods and procedures

Before retrofitting　　　　　　　　　　　After retrofitting