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Increasing Crane Productivity

www.liftech.net

Erik Soderberg, S.E.Liftech Consultants Inc.

Michael Jordan, S.E.Liftech Consultants Inc.

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Embryo to Jumbo

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Productivity vs. Ship Size

With identical machinery, productivity 24 wide / 17 wide = 85%Speeds and accelerations must increase 45% to maintain productivity.Other methods of improving productivity will be more practical.

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Tandem 40 dual hoist

Crane – Yard Interface

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Tandem 40 Container CranesIssues

Single HoistDual HoistSpreadersMachinery HouseHoist MachineryTrolleyProductionWeight and wheel loads

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Tandem 40 Hoist SystemsSingle hoist systems

Dual hoist systems

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Tandem 40 Single Hoist Equipment

Stinis Headblock and SpreaderSource: Cargo Systems, December 2005

Bromma Headblock and SpreaderSource: Bromma ConquipAB

RAM Headblock and SpreaderSource: World Cargo News, October 2005

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Tandem 40 Single Hoist Systems

Source: Bromma Conquip AB

AdvantagesCan use with existing single hoist systems

DisadvantagesCannot separate to fit into some ship holdsBalancing

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Tandem 40 Single Hoist Headblock

Source: Bromma Conquip AB

Tandem Hoist Mode

Single Hoist Mode

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Tandem 40 Dual Hoist System

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Dubai Tandem 40

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Two 40s, Four 20s 80 long tons

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Shanghai Tandem 40s

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Twin Tandem 20s

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Lowering to Chassis

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Lowering to Chassis

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IBC Removal

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Notice spacing cylinders

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Tandem Head Blocks, Spreaders

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Headblock Spacing Cylinders

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Trolley

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Trolley Arrangement

WS headblock stowed

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General Arrangement Combined Gearbox

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Combined Gearbox

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Combined Gearbox

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Two Gearboxes

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Two Gearboxes

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CraneSim Tandem 40 Productivity

Computed 40s = 2 x 46.3 = 92.6 moves/hourExpected 40s = 0.75 x 92.6 = 69.5 moves/hour

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A Few Statistics

45 - 7030 – 4540s per hour

55 / 7035 / 55LS / WS Factored Operating Rail loadskips/ft

18001300Weight metric tons

Tandem 40 Dual Hoist

80 lt capacityYantian, China

Single Hoist65 lt capacityOakland B55

Crane

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Crane – Yard Interface Lane ArrangementElevated LanesOverhead ProtectionConsiderations for Tandem 40 Operations

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Landside Lanes

Source: ZPMC

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Lane Overhead Protection

Source: ZPMC

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Tandem 40 trailer

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Crane Gage – Tandem Operations

Approximate gage required8 29.24 m

10 35.88 m

12 42.52 m

Containers

Landside ballast ?

Yes

Maybe

Unlikely

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Yard Layout - Equipment

Tandem yard cranes will be more viable

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Summary

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Increasing Crane Productivity

Liftech Consultants Inc.January 10, 2006www.liftech.net

Thank you

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Quality Assurance Review:

Mike JordanPrincipal:

Erik SoderbergEditor:

Erik Soderberg, Mike JordanAuthor:

Copyright 2006 by Liftech Consultants Inc. All rights reserved.

The information included in this presentation may not be altered, copied, or used without written authorization from Liftech Consultants Inc. Anyone making use of the information assumes all liability arising from such use.

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Liftech Consultants Inc. Presentation Source Documentation:

Source documents will be stored in: Presentation\Waiting to Archive\AAPA 2006\Crane_Productivity

FYI - Much content originally came from the Zelus Port Congestion 2005 presentation.