With space for 10,000 TEU of empty containers on the 7th floor, the Cogent Logistics Hub in Singapore can stack containers up to 15 high.
Delegates at a Konecranes event in Singapore last week were given a tour of the new Cogent Logistics Hub in Singapore. This new logistics facility, now part of the Cosco group, occupies a total of 1.65 million square feet in a seven-story building in Jurong.
The Logistics Park features docks for unloading containers, warehousing, cold storage for refrigerated cargo, plugs for 160 reefer containers and a fully integrated container inspection system. The concept eliminates the need for a logistics facility to have a separate empty storage depot, enabling shipping lines and other customers to save money on empty container logistics. The disadvantage is the high capital cost, which means it is likely only viable in markets where land costs are extremely high.
The roof-top container stacking system features 11 overhead bridge cranes from Konecranes that can stack boxes up to 15 high. These are based on a standard Konecranes industrial crane with straight rope falls, electronic load control and a target positioning system. Remote control is possible, but at Cogent the operators are in the cabin.
The cranes have a lift capacity of 12t in total, and are fitted with a special light weight spreader from Elme with a 5t SWL. Operating speeds are 120m/min for long travel, 45m/min for cross travel, and a hoist speed of 65m/min laden and 100m/min with empty spreader.
The original concept was to use overhead bridge cranes to manage all the stacking on the 7th floor, and the cranes were estimated to be able to achieve 1,000 moves in ten hours. However, Cogent modified the design to integrate 7-high empty handlers on the same floor.
The empty handlers manage lower height stacks where containers experience a shorter dwell time, and the empty handlers have a faster cycle time than the 4-6 minutes it takes for an overhead crane to move a container. Together the empty handlers and overhead cranes are moving closer to 2,000 containers in ten hours currently.
While containers can be stacked 15 high, currently most stacking is limited to 13 high. Dwell times vary from three days for some customers to 15-21 days for others.
Cogent is now considering introducing technology to try and automate the container inspection process. The time for this ranges from around 5 minutes for a shipping line-owned container to 15 minutes for a leasing company box, where the inspection is much more rigorous.