1. Twin 40 Dockside Cranes and Associated Terminal Operations AAPA Facilities Engineering Seminar
Arun K. Bhimani, S.E.
President
Liftech Consultants Inc.
Introduce yourself, Liftech … Dave Rudolf, VIT
Robert Johansen, P.E.
Planning Director
DMJM HARRIS – AECOM

2. Presentation Outline Twin 40 Dockside Cranes – Arun Bhimani
Terminal Operations – Bob Johansen
Summary
Comments – Q & A

3. Outline - Twin 40 Dockside Cranes
General Information
Head Blocks and Coupling
Head Block Stowage
Operational Issues
Design Considerations

4. General Information
We’ll start with Crane Procurement …

5. Typical Dimensions Rail Gauge 100 ft typical, some 115 ft
Outreach 200 – 225 ft
Backreach 50 – 75 ft
Lift Height 136 ft
Overall Width 88.5 ft

6. Lift Capacity – Under Spreader
Up to 40 t
Up to 60 t
Up to 40 t
30 t
30 t
30 t
80 t Total
80 t Total
120 t Total
Metric Tons

7. Speeds Main Hoist 60 t Single Lift 245 - 295 fpm
80 t Tandem Lift fpm
Empty fpm
Trolley fpm

8. Crane Weights – Metric Tons
Single Hoist DHT40 Increase
61 t 80 t
Dead Load t t
Trolley 27 t 50 t
HB + Spreader 18 t 40 t
Total t t 30%
Rope Towed Trolley Crane in Typhoon Area

9. Operating Wheel Loads – Seaside
Type Single Hoist DHT40 Increase
80 t
Service 42 k/ft 56 k/ft 33.3%
Factored 60 k/ft 81 k/ft 37.5%
(ASCE)
- Rope Towed Trolley Crane in Hurricane Area - 8 Wheels per Corner

10. Single Hoist
Dual Hoist
Bromma

11. Single Hoist Twin 40 Advantages Use with single hoist cranes
Multiple spreader suppliers
Disadvantages
Remove twin 20 spreader
Spread sheaves on trolley
Add twin 40 spreaders
Store on ground when through
Initial tandem 40 operation with existing STS cranes promoted by the spreader manufacturers
Source: Bromma Presentation

12. Dual Hoist Twin 40 (DHT40) - Shanghai

13. Number of DHT40 Cranes – ZPMC
PRC Other* Total
Delivered
On Order
Capacity t 90%
100 – 120 t 10%
* Primarily Dubai, Singapore

14. DHT40 Machinery Two Main Hoists One Extended Trolley
Complex Dual Head Blocks
Special Operator Controls
WS Hoist
LS Hoist
Suggest add to Mechanical

15. Extended Trolley Waterside Sheaves Two HB Power Cable Reels
Landside Sheaves

16. DHT 40 Head Blocks
The crane manufacturer taking back the DHT40 with purpose designed cranes

17. Operator’s Controls
Left Console Foot Switches Right Console

18. DHT Head Blocks Landside Waterside
We’ll start with Crane Procurement …
Waterside

19. Waterside Headblock
Separating Cylinder
Pitch Cylinder
Yaw Cylinder

20. Landside Headblock
Ball clamp extended Ball clamp retracted

21. Headblock Relative Motion
Translation
Vertical offset
Separation and Relative Skew Control
500 mm

22. DHT40 Challenges

23. DHT40 Challenges

24. DHT40 Challenges

25. DHT40 Challenges

26. DHT40 Challenges

27. DHT40 Challenges

28. Head Block Stowage
We’ll start with Crane Procurement …

29. DHT40 – Headblock Stowage
For single hoist operation, unused headblock and spreader “two blocked” to trolley
Converting from single hoist to dual hoist without outside assistance

30. DHT40 Challenges

31. DHT40 Challenges

32. DHT40 Challenges

33. DHT40 Challenges

34. DHT Operations
We’ll start with Crane Procurement …

35. Ship Side Landside
Typical Tandem 40 operation

36. Ideal Ship Stow

37. Ideal Land Side Operations
Bomb carts in position
Extra bomb carts in line behind
Evenly stacked deck containers
Same height containers

38. Not an Ideal World
Efficient headblock uncoupling and re-coupling is required

39. Bomb cart landing

40. Simultaneous Entry Staggered Entry

41. Spreaders repositioned while handling two containers of differing size
Head Block Coupling
Spreaders close together and level while handling two containers of the same size and working within cell guides
Spreaders spread apart and not level while handling two containers of differing size and spotting containers onto yard chassis
Hydraulic cylinder used to accommodate container geometry and space the spreaders
Spreaders repositioned while handling two containers of differing size

42. Productivity Potential
DHT40 is expected to be at least 50% more productive than a single lift crane.
Crane Type FEU Potential
Single-Lift 25 – 30
Dual-Hoist 35 – 45
FEU – Forty-foot Equivalent Container Moves per Hour; Single Cycle

43. Productivity Challenge
Efficient Head Block Coupling
Operator’s controls
Operator training
Terminal infrastructure

44. Design Considerations
We’ll start with Crane Procurement …

45. Fatigue Design Criteria – Single Hoist
Lift Capacity 61 t
Fatigue Load 38 t

46. Fatigue Design Criteria – DHT40
Lift Capacity t – Landside
40 t – Seaside
Fatigue Load 38 t – 4 x 106 Cycles; Landside or
50 t – 2 x106 Cycles; Total

47. Fatigue Spectrum
Single Cycles
Waterside
Double Cycles

48. Snag Load
Head block and empty spreader traveling at high speed striking the cell guide

49. Summary – DHT Cranes Predominantly 80 t Capacity
Landside 60 t, Seaside 40 t
Premium Over Single Hoist
Weight %
Wheel Loads 30% – 40%
Potential Productivity Increase 50%

50. What is Next? Triple 40
We’ll start with Crane Procurement …

51. Triple 40
100 t Total

52. Triple 40

53. Terminal Operations
Circa 1960

54. Summary Twin 40 Cranes are Here Primarily Used for Trans-shipment Hubs
Twin 40 Content Average 20%
Increase over Single Hoist Crane
Weight – 30% Wheel Loads – 35%

55. Is the DHT40 Crane For You? Summary DHT40 Crane Design still Evolving
Productivity Potential 50%
Operator Training
Infrastructure Planning
Is the DHT40 Crane For You?

56. Your Comments
We’ll start with Crane Procurement …

57. Acknowledgements Engineering and Operations Personnel
Hutchison Port Holdings
Yantian Int’l Container Terminals
Modern Terminals Limited
Dachan Bay Container Terminals
ZPMC
McKay International Engineers

58. www.liftech.net Thank You
This presentation is available for download on our website:

59. Liftech Consultants Inc. file data:
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Copyright 2007 by Liftech Consultants Inc. All rights reserved.
This material may not be duplicated without the written consent of Liftech Consultants Inc., except in the form of excerpts or quotations for the purposes of review.
The information included in this presentation may not be altered, copied, or used for any other project without written authorization from Liftech Consultants Inc. Anyone making use of the information assumes all liability arising from such use.
Quality Assurance Review:
Author: Arun Bhimani
Editor: Teresa Ferguson
Principal: Arun Bhimani