Double Cycling of Crane at Container Port
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Transcript of Double Cycling of Crane at Container Port
Double CyclingWhy Double CyclingWorld Seaborne Trade By Types Of CargoWorld FleetDouble Cycling ProcessCase Of MICTFinancial Benefits Of Double CyclingImpact On Storage Space & EquipmentOperational Changes To Support Double CyclingEconomic Evaluation Of Double Cycling
Double Cycling
Double cycling is an operating technique that can be used to improve the utilization of quay cranes by converting empty crane moves into productive ones. Instead of using the current method, single cycling, where all relevant containers are unloaded before any are loaded, with double cycling, containers are loaded and unloaded simultaneously.
World Seaborne Trade By Type of Cargo
1995 2000 2005 20100
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ContainerBulkCrude Oil
Source:RMT2011,UNCTAD
World Fleet(DWT IN Mn)
1995 2000 2005 20100
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ContainerOil TankerDry Bulk
Source:UNCTAD2011
Case OF AMICT
Single CyclingDouble cycling(Proposed)
Crane productivity : 30 moves per hour
Cost Per Moves:$100
Vessel turnaround time : 12 hours (1000lifts per call)
Berth productivity : 60 moves per hour
Crane Productivity:60 Moves per hour
Cost Per Move:$150
Vessel turnaround time:07
hours(1000lifts per call)
• Berth Productivity:100 moves per hour
(Source : Adani Mundra International Container Terminal)
Financial Benefit Of Double Cycling
During the trial at the Port Of Rottardam , the adjusted average time for a single cycle was 1 minute and 45 seconds, and for a double cycle, 2 minutes and 50 seconds. Intercontinental freight rates are estimated at $.045 per TEU-km (Notteboom 2004). At this rate, each hour of idle vessel time costs the ship operator $10,000. The 40 second benefit of each double cycle is worth approximately $100. During typical operations, double cycling could provide approximately $350 per hour, saving about $15,000 on a large container vessel. With three cranes per vessel, this is comparable to the total crane operator’s wages for loading and unloading the vessel
OPERATIONAL CHANGES TO SUPPORT DOUBLE CYCLINGLoading Plans
Load Sequencing
Yard Storage Locations
Stevedores
Container Handling Equipment
Economic Evaluation Of Double CyclingVessel Productivity
Crane Productivity
Berth Utilization
Landside Vehicles & Drivers
Chassis