Project: Chevron AGBAMI FPSO

Scope: Provide essential and emergency power

We provided engineering, programming for the master control panel and four power control modules that coordinated operations of the individual essential units. These include three Caterpillar 3608 engines and one Caterpillar 3606 engine supplied by MustangCAT and generators supplied by Kato Engineering. The controls provided synchronization and load sharing, as well as controlling the four tie breakers and incoming utility breakers feeding each essential bus.

We utilized Allen-Bradley's ControlLogix family of PLC's for controls. The three essential units, their remote I/O, four power control modules, and the master section were linked together by a redundant ControlNET network.

The emergency unit and its remote I/O had its own unique ControlNET network. While each of the individual generator panels had a single processor to control its respective I/O, due to its importance in controlling the essential system, the master panel had redundant processors.

Engine and generator vibration safeties were handled via a Bently-Nevada 3500 system. Customer SCADA communications were handled with redundant Prosoft Modbus-TCP cards in each rack, routed through the master panel where they went to a copper-fiber switch for easy customer use.

An Allen-Bradley HMI was provided on each generator's remote control panel, as well as at an engine mounted control panel, allowing for easy local and remote operator interface for monitoring engine status, alarm and shutdown displays, and animated gauges for all analog devices.

The HMI allowed the ability to change alarms and shutdowns, with password protected access to groups of features to prevent unauthorized changes.