The US Navy's USS Donald Cook DDG 75 destroyer will be used to demonstrate GE Marine Engines (GE) online remote diagnostics system later this year. This follows testing of the system on a GE LM2500 aeroderivative gas turbine at the US Navy land-based engineering site in Philadelphia. The US Navy is integrating GE's online remote diagnostics system with its Integrated Condition Assessment System, a condition-based maintenance system.
The GE system being demonstrated uses an onsite monitor (OSM) to gather engine operating data providing a communication interface with the Remote Monitoring Center at GE Marine Engines' Ohio headquarters. Up to 1000 parameters may be monitored on the gas turbine at one time, including engine operating temperatures, pressures, speeds, vibration, controls and status data such as alarms, trips and equipment on-off conditions. By applying statistical tools, GE can identify changes in engine performance that may indicate a gas turbine or site problem.
The OSM is electronically linked to the site's gas turbine control system either through a dedicated serial bus or an Ethernet connection. The OSM continuously archives parametric data for frequent retrieval and analysis. The result is a clear picture of the state of the gas turbine for maintenance planning, helping to avoid forced outages, minimise outage downtime and reduce the extent of repairs needed.