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EQUIPMENT DIRECTORYBELOW THE HOOK more news at www.heavyliftpfi.com Below the Hook Companies Name A Noble & Son Ltd Access and Lifting Services


ActiveLifting Equipment Co Pty Ltd Alps Wire Rope Corporation


American Crane and Equipment Corporation American Riggers Supply Inc American Wire Rope & Sling Anglia Handling Services Ltd Arbil Ltd


Argon Isotank Ltd Bairstow Lifting Products Co


Brindley Chains Ltd Brunton Shaw


Bushman Equipment Inc Carl Stahl


CASAR Drahtseilwerk Saar GmbH Crane Services Ltd


Dalian Binhai Crane Hoist Co., Ltd De Haan Special Equipment BV


DIEPA Drahtseilwerk Dietz GmbH & Co. KG Downs Crane & Hoist Co. Ltd. DSD Hilgers Stahlbau GmbH East West Engineering EET Corporation


Eide Marine Engineering B.V.


Engineered Lifting Technologies, Inc. Esmet Inc


F&M Mafco Inc.


Gunnebo Industries AB H-Lift Industries Co., Ltd.


Website www.nobles.com.au


www.accessandliftingservices.com www.activelifting.com.au www.alpswirerope.com www.americancrane.com www.americanriggers.com www.awrsling.com


www.angliahandling.co.uk www.arbil.co.uk


www.argon-isotank.co.uk www.bairstow.com


Beacon Material Handling Equipment www.beacontechnology.com Bridon


www.bridon.com


www.brindleychains.co.uk www.brunton-shaw.com www.Bushman.com www.carlstahl.com www.casar.de


www.craneservices.co.uk www.liftingchina.com www.dehaan-se.com www.diepa.de


www.downscrane.com www.dsd-hilgers.de


www.eastwesteng.com.au www.eetcorp.com www.eide.nl


www.eltlift.com www.esmet.com


www.fmmafco.com


www.gunneboindustries.com www.h-lift.com


Hammond & Taylor Superlift Ltd. www.hammondandtaylor.co.uk Harold Potter Ltd


www.haroldpotter.co.uk


Harrison Fabrication Lifting Limited www.harrisonfabrication.co.uk Hercules SLR Inc. HoistQuip Ltd Hunter Lift, Ltd.


Industrial Power & Control Inc ITNAC Corporation. J. Herbert Corporation J.Barnsley Cranes Ltd Kaup GmbH & Co. KG


Konecranes Lifting Businesses LeDoux Industries, Inc.


www.herculesslr.com www.hoistquip.co.uk www.hunterlift.com www.ipandc.com www.itnac.com


www.jherbertcorp.com www.jbarnsleycranes.com www.kaup.de


www.konecranes.com


KPK www.kpk.sk Lankhorst Ropes


Lift-All www.lift-all.com Lift-It Manufacturing Company, Inc. lift-rite engineering services Lifting Gear Products Lloyds Somers


Mennens Steel Cable, Hoisting & Lifting Mentor Dynamics, Ltd. Mercian Lifting Gear


Paceco España, S.A.


Parsons Chain Company Pearson and Curtiss Ltd Peerless Industrial Group


www.lift-it.com www.lift-rite.com


www.liftinggearprod.co.uk www.somershandling.co.uk www.mennens.nl


www.mentordynamics.com www.mercian.co.uk


Modulift www.modulift.com Northern Strands


www.parsonschain.co.uk www.pearsoncurtiss.com www.customlifting.com


Pfeifer www.pfeifer.de Protherm Engineering Pvt Ltd


www.prothermindia.com


www.northernstrands.com www.paceco.es


www.lankhorstropes.com www.ledouxindustries.com


showing its calculations and test data for a given scenario to a classification society such as DNV, Samson could achieve derogation on that lift factor. One of the key enablers for synthetics in slings is the focus on the load envelope rather than the weight of the rigging, allowing accommodation of more weight on the actual package lifted, explained Sherman, who also emphasised easier handling on deck with less risk of personal injury. Offshore, there are advantages for remotely operated vehicles (ROVs) in the handling of lightweight rigging. However, while polyester is


relatively inexpensive, high-performance materials are not. Dyneema is two to four times the price of wire rigging, but is often justified by the faster rigging speed, leading to improved vessel utilisation on offshore projects. Modulift’s experience of Dyneema slings is that they are easier to store onboard than steel and Spivey noted that the higher cost of fibre has generally been less of a factor than safety. According to Sherman at Sansom, the synthetics option is catching on. “We are starting to build a performance track record and people are becoming more comfortable with the projects under way,” he said.


Subsea projects that have utilised Dyneema for rigging include the massive Gorgon offshore project in Western Australia and the Clov project off Angola. The offshore wind energy business, particularly in the UK, has understood Dyneema’s appeal in securing and transferring turbine


components, including use on the London Array offshore wind farm under construction in the outer Thames Estuary with a massive order for 20,000 m of Amsteel-Blue. However, given its wide application and relative economy, total replacement of


130 July/August 2013


steel wire rope would not be realistic.


Synthetic rope solutions could, however, be used as an alternative to roundslings, as they are inspectable (roundslings are jacketed), repairable and less expensive, said Sherman, although he admitted that use of roundslings often remains the best solution where tight tolerances exist for a lift. The increasing use and range of high-performance fibres used in roundslings has prompted the need for a comprehensive performance standard. This should be available later this year from the Web Sling & Tie Down Association (WSTDA) – a US based technical association that writes and routinely updates voluntary recommended standard specifications and associated warning information relating to synthetic sling and load securing products in line with industry needs and changes.


WSTDA standards


WSTDA standards address the construction, testing, identification, marking and capacity information of these products, along with practical advice on their use,


maintenance and inspection, and serve as a guide to industry in product construction, as well as to governmental and other regulatory bodies for the purpose of proper use and inspection. Polyester fibres have always been the leading fibre type used for the load bearing inner core yarns of a roundsling, pointed out Robert Jasany, WSTDA technical coordinator. Recent development by the yarn industry and roundsling manufacturers have led to the production of a roundsling with load bearing core yarns that utilise high performance yarns possessing a much greater tensile strength. “Roundslings of this type


perform differently in application, www.heavyliftpfi.com


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