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Civil LOCATION: PLYMOUTH, ENGLAND JOB: REMOVING A LARGE DOCK CRANE CHALLENGE: CONGESTED SITE 32 33 “The rig was set up in six weeks using mobile cranes” Removal of a Refuelling Crane Mammoet’s client had to remove their huge dockside refuelling crane. This 1,450 ton, 125 meter long steel structure was built in the 1970s to handle fuel for nuclear submarines and will be replaced by a gantry system. The client assumed that the crane would have to be demolished on site which would mean extensive working at height and closing the offices underneath the crane. However, a UK/Dutch Mammoet team proposed removing the crane in one piece, lowering it onto a barge and transporting it to a demolition yard. The 2,000 tons of equipment Mammoet needed included the “Kursk gantry beams” (now extended to almost 40 meters) skid shoes, MSG towers, strand jacks and four mobile cranes. The skid shoes would slide over the beams suspended from the towers using the strand jacks. The rig was set up in six weeks using mobile cranes on the congested site. Helped by perfect weather, Mammoet jacked the 1,450-ton crane up and skidded it across the Kursk beams. Using strand jacks (4x 600-ton and 2x 900-ton) Mammoet then lowered the crane 40 meters onto the barge. The whole operation took less than 20 hours. After removing one of the gantry towers the barge was transferred to a quay. Mammoet skidded the crane onto the quay and the crane was finally at the position where it will be demolished. This was a challenging but satisfying project which offered a much better option to the customer.
Dubai Metro Project LOCATION: SALT LAKE CITY, UTAH, USA JOB: TRANSPORTING TWELVE BRIDGES CHALLENGE: WORKING IN THE MOUNTAINS As traffic is very busy in Dubai, United Arab Emirates, the Roads and Transport Authority decided to build a metro rail system. This is one of the authority’s largest investments and will be the longest fully automated system of its kind in the world. The project includes two lines, with a total length of 68.9 kilometers and 44 stations and is being built by JTMJV (Japan Turkey Metro Joint Venture). A tunnel boring machine (TBM) was required as some of the stations will be built underground. Mammoet was contracted to lift the TBM which weighs approximately 870 tons. Due to limited space on the site, the client decided to lift the TBM in parts and assemble it underground. Mammoet used a CC 2400-1 (400-ton capacity crawler crane) to handle the TBM units. The heaviest unit weighed 160 tons and was installed approximately 25 meters below ground. On the other hand Mammoet was also contracted to transport thousands of precast concrete segments for the same project, namely the pier cap segments (maximum weight 75 tons) and the viaduct deck segments (maximum weight 91 tons). Mammoet utilized many trailers for this operation in order to meet the demands of the client and to attain the required transport per day. Trailers used are lowbed trailers and hydraulic platform trailers. Bridge Projects in Salt Lake City In the summer of 2008 Mammoet USA undertook three bridge projects in Salt Lake City, Utah. The first project was to transport seven bridges by SPMTs from the “bridge farm” where they were built to their installation sites. The weights ranged from 450 to 1,350 tons. Once delivered to the site, each bridge was placed on skid shoes and skidded across steel beams and support beams onto towers with climbing jacks to lower them five meters. All the equipment was then moved to the next site. The next project was in the mountains where four bridges had to be replaced over two weekends. Due to site and time constraints the client choose to demolish two of the bridges and Mammoet would remove the other two and install the four new bridges. The last project was to transport an 800 ton bridge over a distance of over two kilometers on SPMTs and install it on its abutment. Here the Mammoet team had to engineer a solution to deal with the grade changes which exceeded the stroke of the transporters. To overcome that, four swivels of the 600 ton Mammoet skid system were installed on top of the red beams. This set- up then served as foundation for the two beams that supported the bridge. Civil LOCATION: DUBAI, UNITED ARAB EMIRATES JOB: TRANSPORTING A TBM CHALLENGE: LIMITED SPACE ON SITE “ The longest fully automated system of its kind in the world”
Page 1 and 2: 8Petrochemical page 6 Power page 16
Page 3 and 4: LOCATION: THE HAGUE, THE NETHERLAND
Page 5 and 6: “We are confidently looking towar
Page 7 and 8: LOCATION: SINGAPORE JOB: INSTALLING
Page 9 and 10: Offloading, Transporting and Positi
Page 11 and 12: “The coordination of necessary de
Page 13 and 14: Record for Mammoet Dubai Turnaround
Page 15 and 16: SHE-Q “Improving the translations
Page 17 and 18: “This required the Moscow ring ro
Page 19 and 20: Photographs courtesy of Robert de H
Page 21 and 22: Nacelle Changeout Mammoet originall
Page 23 and 24: Challenge: Organize a special progr
Page 25 and 26: day one has been to save the client
Page 27 and 28: ups and mega load-outs Angel Platfo
Page 29 and 30: Skidding 5% Downhill A Chinese yard
Page 31: Mammoet LTM 1200 (1:50) √ Limited
Page 35 and 36: “We combined the SPMTs with a gan
Page 37 and 38: not to become a shipowner, apart fr
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