challenges for special application cranes in …project management challenges for special...
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Carsten Bohnenkamp
October 11, 2012
Challenges for Special Application cranes in constructing the next generation of infrastructure
INTERNATIONAL TOWER CRANES 2012, BERLIN
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Challenges for special application cranes in constructing the next generation of infrastructure
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Potain started building tower cranes 85 years ago
Born from the need for modular and easily transportable lifting equipment
Special Application cranes are adapted from standard cranes
Where the story began
French Power Plant in the 70s
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The birth of Special Application cranes
The first Special Application cranes appeared in the 60s
Main applications in power plants and shipyards
Harbour cranes in the 60s
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The future for Special Application cranes
Emerging countries represent strong potential
Special Application cranes are less sensitive to cyclical demand markets
Energy and Infrastructure generate strong demand
Dam project in India
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What are the key markets?
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Key markets
Dams
Bridges
Power plants
Shipyards
High-rise buildings
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Typical applications
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Infrastructure Shipyards High-rise buildings
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Dam projects
Saddle jib cranes are preferred
Crane performance: from 500 to 3,000 tm
Typical loads: steelwork, scaffolding or mechanical components needed for power generation
Concrete conveyors are used for high volume concrete pouring
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Shipyards
Yard cranes are frequently equipped with traveling portals
Crane performance: from 500 to 1,000 tm
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High-rise buildings
Luffing-jib cranes are preferred
Crane performance: 90 to 10,000tm
Typical loads: prefabricated components or heavy steel trusses
High line speeds are key
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Bridges
Hammerhead cranes are preferred
Crane performance: 400 to 5,000tm
Typical loads: prefabricated components, heavy steel trusses or concrete buckets
High out of service winds need to be considered
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Nuclear Power
Hammerheads are preferred but luffing jib cranes offer higher “hook density”
Crane performance: 300 to 3,000tm
Typical loads: prefabricated components
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What products are available?
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Derived from serial production cranes
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Shipyard Dam
Customers require complete solutions incroporating:
- Technical engineering and studies
- Budget cost evaluation
- Training, maintenance and service
Customization
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High-rise Power plants Bridges
Tailor-made cranes better fit their application and maximize productivity
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Customization
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Adapting and customizing
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Special adaptations
Use of a standard « tool box » to adapt cranes
Special design to integrate other construction equipment (eg. concrete pumps or conveyor belts)
Yard cranes often used with special traveling portals
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Tailored design and dimensions
Tower cranes are designed to recognized standards, such as EN14439
Guidelines have been published by CECE
Depending on the duty cycle of the crane, the design must be adapted
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Design and manufacturing
Special Application cranes are based on proven design
Well organized manufacturing is prerequisite for delivering high quality products
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Transportation
Job sites are often remote
Crane needs to breakdown in small transportable units
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Must collapse to standard container size
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Easy to erect
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Easy to assemble without sophisticated tooling
Capable of assembly by local workforce
Erection, commissioning, training managed by highly qualified supervisor
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Easy to dismantle
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Dismantling is planned at the start
Bigger cranes are dismantled by smaller cranes
Smaller cranes are disassembled by small « recovery » or derrick cranes
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Lift planning and other service requirements
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Project management
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Establish a dedicated team
Assure project management from inquiry to commissioning
Set-up a multidisplinary project team
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Begin with initial job site layout
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Initial job site layout
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Standard cranes adapted to the job site
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Cranes implemented into the job site plan
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Special Application and service cranes covering the job site
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Special Application and service cranes covering the job site
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Special Application cranes on a dam project
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Maintenance and service a key factor in success
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Special Application cranes are becoming more « standard »
• Shorter job site durations
• More heavy and prefabricated construction components
• Customers looking for highly skilled experts to propose the right lifting solutions
• Increase productivity and reduce costs
CONCLUSION
Demanding but rewarding market segment
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