3 DRYDOCK SUPPLEMENT SEPTEMBER 2006 At the beginning of last year the vessel Provider 1 (renamed Calamity Jane after repairs) underwent a major conversion project at ASTANDER Shipyard in Spain. The vessel is owned by the Swiss-based Allseas Group, which is one of the major offshore pipelay and subsea construction companies in the world; which operating a number of specialised vessels, has gained year after year world-wide experience in all types of offshore and subsea construction projects. Allseas had previously worked with ASTANDER, as much in conversion projects as in works for general repair. The good relationship between both companies brought this important contract. The vessel was built in 1978 and converted into a cable layer in 1999 The work carried out this time at ASTANDER, was the conversion of the existing cable ship into a trenching and offshore support vessel; starting with the arrival of the vessel at the Shipyard on 24 of January, until her delivery on 18 of May. Calamity Jane is now the successor of the vessel Trenchsetter, also converted in ASTANDER in 1989 from dock ship/barge carrier into a trenching-pipe carrying vessel, and successfully working from this date until the delivery of this new conversion in 2005. Calamity Jane performs as a support vessel for Allseas’ mechanical subsea pipeline trencher Digging Donald. In addition to trenching, other support services on dynamic positioning can be performed, such as pipeline crossing preparation, mattress installation in deep water, surveys and digging and testing of pipelines. Another succesful conversion at ASTANDER Another succesful conversion at ASTANDER PROVIDER 1 CONVERSION PROJECT Provider 1 Calamity Jane
Transcript
3DRYDOCK SUPPLEMENT SEPTEMBER 2006
At the beginning of last year the vesselProvider 1 (renamed Calamity Jane afterrepairs) underwent a major conversionproject at ASTANDER Shipyard in Spain.
The vessel is owned by the Swiss-based AAllllsseeaassGGrroouupp, which is one of the major offshorepipelay and subsea construction companies inthe world; which operating a number ofspecialised vessels, has gained year after yearworld-wide experience in all types of offshoreand subsea construction projects.
AAllllsseeaass had previously worked with ASTANDER,as much in conversion projects as in works forgeneral repair. The good relationship betweenboth companies brought this important contract.
The vessel was built in 1978 and converted intoa cable layer in 1999
The work carried out this time at ASTANDER,was the conversion of the existing cable shipinto a trenching and offshore support vessel;starting with the arrival of the vessel at theShipyard on 24 of January, until her delivery on18 of May.
Calamity Jane is now the successor of the vesselTrenchsetter, also converted in ASTANDER in1989 from dock ship/barge carrier into atrenching-pipe carrying vessel, and successfullyworking from this date until the delivery of thisnew conversion in 2005.
Calamity Jane performs as a support vessel forAAllllsseeaass’ mechanical subsea pipeline trencherDigging Donald.
In addition to trenching, other support serviceson dynamic positioning can be performed, suchas pipeline crossing preparation, mattressinstallation in deep water, surveys and diggingand testing of pipelines.
Another succesfulconversion at
ASTANDER
Another succesfulconversion at
ASTANDER
PROVIDER 1 CONVERSION PROJECT
Provider 1
Calamity Jane
PROVIDER 1 CONVERSION PROJECT
4 DRYDOCK SUPPLEMENT SEPTEMBER 2006
Trenching is possible for pipelines up to 48”diameter in water depth up to 350 m.
The trencher, known as Digging Donald, is theonly mechanical pipeline trencher that nevertouches the pipelines. It is fully remote controlledfrom Calamity Jane.
Ship in general
In the following, a description of the vessel isgiven after completion of the whole conversion.
Introduction
The vessel, a cable layer, DP(AA), has beenconverted into a DP(AA) operated vessel capable of:
Trenching with trencher Digging Donald;
Mattress and tunnel installation with MattressInstallation Frame (MIF);
Trenching is done with the existing trencher,Digging Donald. The trencher is launched overthe stern of the vessel by means of the TrencherHandling Frame (THF). Both trencher and THFhad to be transferred from the vessel Trenchsetter.
The trencher is stored in former cable tank/hold 5,which had to be closed with a large weathertighthatch. Extending parts of the trencher had to bemodified or made removable, in order to make itfit in the hold. The trencher is stored in the holdduring skidding/installation operations. It ispossible to keep the trencher on the hatch,fastened to the vessel during survival conditions.
After the trencher is lifted out of the hold bymeans of the THF, the hatch is closed while thetrencher is still suspended from the THF. Thetrencher is then placed on the hatch andprepared for launch.
Repair activities can take place both inside formercable tank/hold 5 and on top of the hatch.
In the hold, the trencher isaccessible from all sides,by a free corridor ofapproximately 1.5 m wideon all sides.
Workshops and stores areeasily accessible from therepair area, on the samelevel.
The trencher is controlledand powered through anumbilical. Umbilical andreel, were also transferredfrom the Trenchsetter.
The power supply related items (switchboards,converters) have been placed in one of the sidetanks of the vessel. A new control cabin (aftcontrol room) was constructed on the portside ofthe THF, in order to provide an optimum view onthe trencher when it is launched/recovered.
The THF was placed as far aft as possible, in orderto maximise control of the longitudinal motions ofthe trencher during launch and recovery and tominimise the risk of impact on the transom.
Mattress installation
Mattresses and other subsea protectionstructures (tunnels) have to be installed with theMattress Installation Frame (MIF). The maindimensions are 14.5 m x 3.6 m x 9 m.
Mattresses are stored primarily on the main deck,and skidded to the rear. If deck space isinsufficient, some can be stored in hold 2 and 3as well. Payload of mattresses or other structuresshall at least be 1000 t. Standard sizemattresses are 3 m x 6 m, max. 18 t each. Themattresses are stacked up to three tiers high witha weight of 60 t in total. The skidding system isdriven by means of chains. The system is capableto pull fully loaded skids.
Survey/ROV (Remote OperatedVehicle) support
The ROV deck is located behind the aft thrusters,in order to allow the ROV unobstructed access tothe stern of the vessel, where the installationwork takes place. All ROV equipment is situatedat upper deck level. This deck areaaccommodates the ROV plus A-frame,winch/umbilical reel, ROV workshop, spare partscontainer and ROV control cabin. ROV activities can take place simultaneously withinstallation activities, so the ROV can assist orobserve the installation work.The office spaces required for survey arepositioned in hold 1.
Provider 1 particulars:
Length oa. 141.00mLength pp. 120.00mBreadth mld. 20.24mBreadth extr. 20.28mDepth to main deck 12.60m
to raised main deck 13.450mto upper deck 16.850mto tween deck 10.00mto dock deck 6.400mDraught summer 7.630mFreeboard summer 5.007mLightweight 6,853tTonnage GT 10,493Tonnage NT 3,147IMO No. 7616779Year of built 1977/
1978Building yard Hollming,
Rauma, Finland, Hull 218
Converted to cable ship June
1998 / Feb 1999 DaewooMangalia, Romania
5DRYDOCK SUPPLEMENT SEPTEMBER 2006
PRO ELECTRONICA SUR, S.A. (PROELSUR) has actively taken part in thisconversion, carrying out the following works:Mounting of electrical conduits.
Installation of switchboards, transformers and starters.
As additional jobs, we have carried out the electrical installation of theHelideck, and the Matress & Hatch Diggind Donald systems.
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Cable Laying for power, lighting, automatism, data, optical fibre, safety,surveillance and medium voltage systems.Connection of above mentioned systems, with special emphasis onmedium voltage connection.Manufacturing and delivery of lighting switchboards, pump starters andcontrol panels for bridge.Integration of new systems with existing ones.Installation of new accomodation.
Poligono Industrial “El Trocadero” - C/ Francia nº111510 - Pto. Real (CÁDIZ) - SPAIN
Apart from the works above, PROELSUR has prepared the electrical protocols,and carried out the commissioning and delivery of all systems mentioned above,having a highly qualified personnel and in record time.
It is appropriate to underline the display performed by PROELSUR in all theworks, regarding the project management, production control, logistics and allother actions necessary for the project delivery within the contractual date.
ISO 9001 Certificate by
ESPMDD003374
ISO 14001 Certificate by
6000442
Stripped by Yard
Flooding/Pigging/Gauging/Testing (FPGT)
A permanent pump room has been installed in the vessel. Also,high-pressure pump capacity to carry out hydro testing ofpipelines. Space has been reserved (100 m2 on upper deck area)for flooding activities with larger pipe diameters.
A number of main equipment items installed on board AAllllsseeaass
trenching vessel Trenchsetter had to be removed, overhauled andinstalled on Calamity Jane.
General arrangement plans
In the general arrangement plans it is possible to see thecondition of the vessel before conversion, with stripping structures
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6 DRYDOCK SUPPLEMENT SEPTEMBER 2006
and equipment (shown in red); and the general arrangement planafter conversion; and easy to note the main differences andappearance of the ship before and after carrying out the works.
Structures and equipment to be stripped andremoved in the existing vessel
Modification of the aft ship.
Removal of cable guides in raising main deck.
Removal of 5 cable tanks for storing of the cable.
Removal of gantry crane on deck
Removal of existing funnels and exhaust gas pipes.
Other structures and equipments such as mooring equipment,ventilation trunks, internal structures in tanks and existing localsthat is necessary to remove or modify because of the installationof new equipments.
Main works done at the shipyard, modificationof vessel’s structures.
Aft part of the ship, designed to lay the cable had to be scrappedand a new structure built as follow:
Provision of a new tramson at frame 0.
Lengthening of the existing outriggers at Ps and Sb offrame -21.
Closing of the inner part of the outriggers at Ps and Sbafter stripping.
The provision of coamings for the trencher hatch in way ofthe stripped raised main deck.
Provision of a rail at Ps and Sb for the trencher hatch.
Provision of fastening when at sea for the trencher hatch.
provision of hatch lift restrictions at Ps and Sb.
Where cable guides have been removed at five locations, holeshad to be closed with deck plating and stiffeners.
Provision of tweendeck and pillars in former cabletank/hold 1
The space below and above the new tweendeck wasconverted into recreation areas, fitness room and stores(dock deck); offices in tweendeck; and new changing roomand lockers on main deck.
The total surface converted in new accommodation wasabout 550 m2, with the installation of all auxiliary servicesas ventilation, air conditioning, electrical works,…. etc.
Provision of pillars in former cable tanks/hold 2 and 3 (onespace)
This new space is dedicated as a cargo hold, and providedin the raised main deck with pontoon type hatch foraccess.
Provision of tweendeck, bulkheads and pillars in cabletank/hold 4.
The space above and below the new tweendeck have beenconverted into store and workshop areas.
Cable tank/hold 5 was converted into a hangar for thetrencher Digging Donald.
Provision of a pontoon type hatch cover was made andfitted at upper deck level, giving access to the cargo holdarea.
Another hatch was fabricated above former cable/tank 5for storing the Digging Donald (trencher). The movement ofthis hatch forward and aft is arranged by means of achain, rolling over rails. A lifting system hydraulicallyoperated is fitted to lift the hatch cover out of its seal.
A chain driven mattress skidding system was provided atraised main deck level, the electrically driven system allowsto move the mattress to the aft part of the vessel and keepit ready for launching.
The tubular structure for laying the mattress, fabricatedand installed as well in ASTANDER, is named MIF.
A new raised compass deck was fabricated and installedon top of the bridge, to accommodate top mast, a newhelicopter waiting room and a new helideck.
The new helicopter landing platform was built inaluminium and fitted forward of the accommodation andabove compass deck level, with installation of firefightingsystem, power supply, illumination, motion measuringsystem, and all services and systems according toregulation.
Funnels and exhaust gas pipes were modified andextended, joined in a “A” shape structure from port side tostarboard side.
Modification of bilge wells and deepwells merging withnewly created ballast tanks and pump rooms
Provision of rubber profile bumper frames between/belowoutriggers, on raised main deck, on dock deck and on thetransom
Production equipment installation.
TTrreenncchheerr:: Installation of supporting equipment for trencher(foundations, brackets, cable trays, supports, etc) in newswitchboard rooms at dock deck and tweendeck levels. Cabling.
TTrreenncchheerr uummbbiilliiccaall wwiinncchh:: Provision of foundation for umbilicalwinch. Provision of foundation and access for umbilical heavecompensator. Cabling.
7DRYDOCK SUPPLEMENT SEPTEMBER 2006
PROVIDER 1 CONVERSION PROJECT
TTrreenncchheerr hhaannddlliinngg ffrraammee:: Provision of aft A-frame of the THF.Foundations on, in and below main deck for both aft and forwardnew A-frames. Installation of box girder and forward A-frame ofthe THF.
AAfftt ccoonnttrrooll rroooomm:: Provision of a new ACR module with foundation,access staircases and platforms. Equipment and cabling.
MMaattttrreessss iinnssttaallllaattiioonn ffrraammee:: Provision of new MIF structure. Provisionof foundation for MIF, umbilical winch and installation of winch.
FFllooooddiinngg aanndd tteessttiinngg eeqquuiippmmeenntt:: Modification of ballast tanks intoa Flooding/Pigging/Gauging /Testing (FPGT) pump room, abreakwater tank and a Glycol tank. Installation of eight mainpumps, five chemical injection pumps, pipelines, valves, etc.Installation of FPGT electrical equipment. Installation of FPGT hosereel, A-frame and chemical tanks.
RROOVV:: Installation of permanent equipment for ROV (180 kWconverter set, starter/control panel, ROV power distribution panel,potable water connection, survey junction box. Foundations,brackets, cable trays, etc.)
Material handlingModification of overhead crane under upper deck.Provision ofelevators and power packs in former cable holds 1 and4.Provision of pedestal for the new general purpose crane.Rerouting of transformer and cabling.
Mooring winchesRelocation of electrical driven capstans, mooring winches,fairleads and mooring winches after structural modifications inthe aftship and the installation of the helideck.
DP and navigation systems
Provision of new DP dive alert system and second tautwire systemon new platform. Installing of monitoring/control equipment.
Provision of second hydrophone. Building a cofferdam insideballast tank with access trunk. Alarms and cabling. Installation of new radar scanner and AIS system with antennae.Rerouting of piping and cabling for multi-beam echo sounder.Relocation of GPS antenna, and VSATdome.Relocation of all navigation lights, radars, windsensors, etc on topmast
Other systems
Installation / Modification / Extension of vessel’s MGO/MDOtransfer system, SW/FW cooling systems, Compressed air system,M/E, A/E, new incinerator and boiler exhaust gas systems,machinery automation systems, CCTV system, tank levelmeasurement system.
Modifications on vessel’s ballast system, bilge system, drain andscupper system, fire alarm system, Emergency stop systems, firemain system.
All common electric distribution ismodified:
380 V and 220 V emergencydistributions, 380 V and 440 Vnormal distribution
