flAnged JAcket lifting tool (fJ-lt) - Houlder Ltd · flAnged JAcket lifting tool ... , General...
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Application + Construction of Offshore Wind Farms (OWFs) – Installation of Jacket Foundations FLANGED JACKET LIFTING TOOL (FJ-LT) Lifting jacket foundations from the internal flange The tool, which can be operated remotely, engages with the underside of a jacket flange, negates the need for human intervention, thus increasing safety and speed of jacket installation.
Transcript of flAnged JAcket lifting tool (fJ-lt) - Houlder Ltd · flAnged JAcket lifting tool ... , General...
Application
+ Construction of Offshore Wind Farms (OWFs) – Installation of Jacket Foundations
flAnged JAcket lifting tool (fJ-lt) Lifting jacket foundations from the internal flange
The tool, which can be operated remotely, engages with the underside of a jacket flange, negates the need for human intervention, thus increasing safety and speed of jacket installation.
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• Thetooldesignandoperationshouldnotrequiremodificationtothejacketdesign
• Capableofliftinga1000tjacket
• Thedesignalsoaimstominimisetheheightandweightofthetooltomaximiseoperationalflexibilitywithregardstohookheight
• TheHoulderdesignconceptforthisequipmentallowsfortheremoteengagementanddisengagementofthetool,thusremovingtherequirementforpersonnelworkingatheighttoinstallthetoolpriortolifting
benefits
relevAnt codes, stAndArds & legislAtion
TheJLTwillcomplywiththefollowingcodes&standards:
• DNVGL-SE-0080ed.2015-12,NobleDentonmarineservices–marinewarrantysurvey
• DNVGL-CG-0127ed.2015-10,FiniteElementAnalysis
• 0001/NDrev.12015,GeneralGuidelinesforMarineProjects
• 0027/NDrev.62015,GuidelinesforMarineLiftingandLoweringOperations
• 0030/NDrev.62015,GuidelinesforMarineTransportations
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system specificAtion
• Toolengages/interfaceswiththeundersideofthejacketflange
• Weightoftoolisapproximately20t,notincludingrigging.Thetotalweightoftheentireliftingassemblyisestimatedat25t
• Ensurethatthejacketisnotoverstressedforanytemporaryloadcasesthroughoutitsoperation(i.e.engagement,liftingetc.)–thisistobeconfirmedviaFEAmodellingoftheliftingprocess
• Providestheremoteoperatorwithconfirmationthatthetoolisengagedandthattheliftingoperationissafetocommence
• Toolwilluse2mountedcamerastoenabletheoperatortopositiontheliftingtoolintothejacketflange
• Toolwillinclude2padeyestoallowtuggerlinestobeattachedforpositioning/steering
• Designedsuchthatitisinherentlysafeinasmuchthatitwouldnotlosetheloadshouldpowerbeterminatedfromthetoolorwhilstthereisanyloadbornbythetool
• Hasanintegratedpowersupplyandcontainsasecondarymeansofoperationshouldtheprimarycontrolsandorpowersystemfail
• Providessufficientprotectiononareasthatphysicallyinterfacewiththejacketsuchthatthetoolwillnotcauseanyformofdamagewhichmayaffecttheperformanceofthejacket
system components
TheliftingtoolsincludeHoulder’spatentpendinglatchdesignwhichusesa‘pianofinger’likeconfigurationtodistributetheloadsintotheflangewithgreaterspaceandweightefficiency.Aclose-upofthearrangementcanbeseenbelow.Ratherthanwithasinglebeam,wheretheloadwillconcentrateattheendoftheitsstiffestaxis,apianofingerlikelatchtransferstheloadevenlyacrossmultiplebeams,resultinginbetterloaddistributionintotheflange.
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Houlder is an independent, innovative offshore engineering company. We build on 30 years’ offshore expertise and work closely with clients to design solutions for their technical challenges. We provide complete EPCI services with special equipment, consultancy, project management and engineering solutions for the offshore wind and wider energy sector.
