Hydraulic gantries demonstrate their diversity
23 July 2009
Barnhart Crane & Rigging carried out a project to transport and install a reactor at a petroleum plant in Billings, Montana, US.
The new hydrotreater reactor (D8423) weighed 918,250 pounds (416,511 kg) and measured 12 feet 6 inches (3.8 m) wide and 145 feet (44.2 m) long. The vessel has a 4.6 inch (11 cm) thick steel shell and aluminium-clad shell insulation. The new reactor is part of the Low Sulphur Gasoline Phase 2 project for the Conoco-Phillips refinery.
"We were to pick up the reactor right off the lake in Duluth where it was shipped in by Jumbo Shipping," says Donnie Thweatt, project manager. "Our job was first to load and secure the reactor onto a rail car so it could be shipped to Billings. Once it arrived at the rail station in Billings, we would haul it to the refinery and then install it."
While the logistics seemed simple enough, engineers Eric Barnhart and Scott Fletcher devised a plan that involved the use of its Goldhofer PST transporters, a Modular Lift Tower (MLT) and 716 US ton (650 tonne) capacity strand jack, plus two custom-designed 500 US ton (454 tonne) capacity (each) bolsters for transporting the reactor by rail, along with its gantry systems.
Once the vessel arrived in Billings, Barnhart crews were on site to off-load it onto their Goldhofer PST for transport to the final set location in the plant about 3.5 miles (5.6 km) away. "We off-loaded it from the railcar with our 800 US ton (726 tonne) Lift Systems gantries," explains Thweatt. "It was unloaded using the gantry system with Barnhart's 5 foot (1.6 m) deep girders to account for the 459 US ton (416 tonne) weight of the reactor."
Barnhart crews snaked the reactor through the refinery on the Goldhofer transporters and delivered it to the MLT already assembled at the erection site. As they inched closer to the installation site, the space became increasingly tight. For this project, Barnhart's engineering team spent significant engineering hours and time with the customer to finalise the set up of the modular lift towers in the highly confined plant space, Thweatt says.
As the lifting took place, the crews had to bring the vessel vertical and then shift it to the north about 20 feet (6.7 m), and then shift back to the east at around 10 feet (3.3 m) to clear the structure and get over the anchor bolts and to set the vessel in place, Thweatt says.
In many cases like this, a large-scale crane is used for the tailing process. Barnhart engineers knew this would be a much more costly operation if a crane had to be hauled in and set up, and the tight quarters made using a crane even less desirable - if not impossible.
In Mexico, Transportes Tellería carried out the transportation, rigging and installation of industrial equipment needed in the expansion of the country's largest coal-fired power plant.
As part of the national development programme in Mexico, the federal government endorsed the expansion of a coal-fired power plant in Petacalco, Guerrero. With the installation of the new equipment, the Pacifico power station will have the capacity to generate 700 Megawatts of electricity, making it among the largest power plants in Mexico.
Mitsubishi Heavy Industries and Transportes Tellería formed a new joint venture to make this work possible. The project required a full year of planning and involved the rigging and transport of more than 15,000 tonnes of machinery. The heavy cargo was offloaded from the Port of Lazaro Cardenas and transported to the plant in Petacalco.
On arrival at the plant, the Schnabel system was disassembled and the generator was unloaded onto a wood beam deck for temporary storage until the installation date. Some days later, using an 800 tonne capacity gantry, the generator was loaded back onto the transport system, a 14-modular line trailer for transport to the installation site.
In order to lift the generator to its final position at 16 m high, it was necessary to build a temporary structure comprising four strand jacks. The strand jacks were positioned over the rails using a self-propelled 2,400 tonne capacity gantry used to lift the generator 60 m up to its base. The same procedure was performed for the turbines of 190, 214 and 218 tonnes, which were lifted to 30, 40 and 50 m, respectively, up to their final positions.
In today's tough financial market conditions, now more than ever, the supply and assembly of printing presses requires technically perfect and cost-efficient solutions that satisfy contractor and end customer in equal measure, says Scholpp. The components of the second Goss Sunday 4000 press were moved onto the premises of Stark Group in the Altgefäll industrial area, Stuttgart, Germany, and installed in two phases of just a few days each without any interruption to production.
"Having worked on countless international projects, Scholpp Montage GmbH's expertise in all areas of the printing industry is well documented. And it is thanks to its many years of collaboration with the world's leading printing press manufacturers and its insider knowledge of the layout at Stark Druck that the second Sunday 4000 project was completed even more efficiently and cost-effectively than the first project a few years previously."