E-Crane ™ at work @ barge unloading facility

E-Crane ™ at work @ barge unloading facility



(Picture left) The E-Crane equilibrium crane at the Progress Energy Carolina’s Sutton Plant is discharging coal into the hopper system that feeds the conveyor system @ a rate of three (3) grabs in 75 seconds.

(Picture right) Close-up of the E-Crane equilibrium crane at the Progress Energy Carolina’s Sutton Plant.
Some of the major equipment manufacturers in the United States have given Dry Cargo Internationaldetails of their latest projects and recent developments.
These companies cover such diverse bulk handling aspects as equilibrium cranes, conveying systems (including chains) and dome storage.
 E-Crane at work at barge unloading facility
An E-Crane equilibrium crane is the workhorse of a new barge unloading facility that went into operation in November last year for Progress Energy Carolina’s Sutton Plant, just north of Wilmington, NC on the Cape Fear River.
The increasing cost of US coal and escalating rail freight rated were forcing Progress Energy to find a more economical coal source. Therefore, Atlantic Diving and Marine Contractors developed and built a ship receiving facility to transload the coal from the ships to barges and then transport it upriver to the plants, efficiently unloading it from the barges and moving it by conveyor from the shoreline to the plant.
The E-Crane transfers the coal from barges to an 855ft conveyor system that carries it up to the plant. Because the barges are 52′ wide, 14′ deep and 250′ long, offloading with a traditional hydraulic excavator would be very inefficient. The E-Crane selected for the job (1000 Series, Model 7248) is equipped with an eight cubic yard hydraulic clamshell bucket that can reach out horizontally a distance of 81ft, making it possible to offload the coal from the barges efficiently.
The E-Crane uses half the energy to move twice the payload of conventional cabled or excavator-type cranes. That is because the payload and the weight of the boom and are always counter-balanced. As the arm extends out, the counterweight extends back. As the arm moves in, the counterweight moves in also. Unlike a conventional crane that requires up to 80% of its energy just to move, the E-Crane has to do substantially less work, so it needs a much smaller (and less expensive) motor to move its hydraulics. Therefore, it handles about twice the coal with less than half the horsepower, resulting in lower operating and maintenance costs.
Atlantic has a three-year contract to provide Progress Energy’s Sutton Plant with coal. Progress Energy Carolinas provides electric power and services to 1.3 million customers in North Carolina and South Carolina.
Atlantic Diving & Marine construction company located in Wilmington, NC. E-Crane international-USA, Bucyrus, Ohio, assisted North American Equipment, the E-Crane dealer in Nicholasville, KY, handled the sale, consulted on the specifications and installed the E-Crane. The E-Crane is manufactured in Adegem, Belgium by NV Indusign.


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