Bailey Supplies Control System For World's Largest Submersible Derrick Barge
The world's largest submersible derrick barge, built by Mitsui Engineering and Shipbuilding Co., Ltd.
for McDermott International, Inc., has been equipped with an advanced ballast control system supplied by Bailey Controls.
The Bailey Network 90 microprocessor- based system provides integrated control of ballast pumps and valves as it monitors the list and trim relative to the load on the crane, mooring line tension and feed out, current ballast tank status and wave motion. Network 90 also provides the communication link between the crane safety and dynamic positioning computer systems.
Through three CRT-based Oper- ator Interface Units, operators are able to control and monitor equip- ment via real-time interactive graphics, obtain equipment trend- ing and status reports, and alarm summary reports.
Employing an enhanced Multi- function Controller Module, the system can simulate projected barge movement based on actual or antici- pated conditions. This procedure is directly applicable to cargo loading and discharge of tankers as well as general cargo carriers, The DB 102 barge is equipped with dual revolving cranes with a total lifting capacity of 13,200 short tons, and is designed to work in the world's most severe marine environ ments such as the North Sea.
The self-propelled DB 102 has complete accommodations, health, and recreational facilities for 750 personnel. These can be expanded to accommodate as many as 1,500 persons in order to meet the most demanding project requirements including lifting, installing and dismantling offshore structures and facilities.
In addition to a 12-point mooring system, the barge possesses a dynamic positioning system and is equipped with six sets of 3,000 horsepower thrusters to ensure stable barge operation.
The 136,709-gross-ton vessel has an overall length of 662 feet, width of 320 feet and height of 162 feet.
The twin lower hulls are 505 feet long, 92 feet wide and 44 feet deep.
The maximum operating draft is 104 feet and the deck load capacity is 12,000 metric tons. DB 102 has a transit speed of 8 knots.
Bailey Controls is a division of Babcock & Wilcox, and a leading worldwide supplier of instrumentation, controls, and computer systems for power generation, process automation and energy management in the petrochemical, electric utility and process industries.
For further literature containing full information, Circle 52 on Reader Service Card
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