Barnhart Completes Erection of 80 1.8Mw Wind Turbines in Eight Weeks
Nov 26, 2003
(MEMPHIS) - Barnhart Crane & Rigging Co. was contracted to transport 80 wind turbines from their various U.S. ports of entry and erect them on site at a wind farm in Wyoming.
Barnhart was awarded the job based on its ability to handle the entire project logistics, as well as erection, and meet an extremely aggressive erection schedule.
The renewable energy project, which stretches over 50 square miles, is expected to more than double Wyoming’s wind generating capacity. The project will have a generating capacity of 144 megawatts, providing enough electricity to power more than 43,000 homes. The wind farm represents “a significant new source of clean, renewable power [for] the region,” according to a statement released by the energy firm developing the project, which is scheduled to be complete by the end of this year.
Most of the components arrived by ocean-going carriers at the Port of Houston and the Port of Longview, Wash., over a two-month period that began in August. The cargoes consisted of 240 tower sections, 80 nacelles, 80 hubs and 240 blades manufactured by the world’s largest producer of wind turbines.
A total of 11 complete trains delivered the wind turbines to a railhead at Kemmerer, Wyoming, approximately 26 miles from the project’s laydown yard. Barnhart Crane & Rigging provided logistics to receive, secure and deliver the cargoes from Houston, Longview and North Dakota and then off-loaded the components from railcar using a pair of Manitowoc Model 2250 cranes and set on trucks for transport to the project site. The nacelles and hubs were pre-assembled on site at the laydown yard and then moved by Goldhofer trailers to the pad site.
According to John Battle, Quality Assurance manager, Barnhart Crane & Rigging, the crews utilized a Manitowoc Model 777 lattice boom crane to set the bases and the majority of the mid-sections of the wind turbines.
Manitowoc Model 250 and Model 2250 cranes configured in the MAX-ER™ mode were used to set the pre-assembled nacelles and hubs, each of which weighed approximately 220,000 lbs. In the MAX-ER mode, the cranes have a 500-ton heavy-lift boom capacity with up to 620 feet of boom and jib. Manitowoc Model 888 cranes were used to set the blades. Barnhart chose a single blade erection, Battle said, explaining that the Barnhart engineering team determined that it would be more efficient to install one blade at a time rather than installing the entire rotor assembly. As many as four crane crews were working at the same time, Battle said, two setting bases or mid-sections, one setting tops, nacelles and blades, and a fourth setting blades only. “It’s been a big job,” Battle said. “I came out here the first of August, and I’m still here more than 12 weeks later,” he added with a laugh.
Barnhart Crane & Rigging, established in 1969, is a leading national supplier of specialized heavy rigging and transportation solutions. The company, with 13 locations across the United States, also provides crane services, machinery moving and plant relocations, as well as project cargo logistics and heavy equipment storage at its 100-acre, 700,000-square-foot warehouse facility in Memphis, Tenn.
Barnhart Crane & Rigging, an ISO 9001 certified supplier, also operates terminal facilities at the Port of Memphis and the deepwater Port of Mobile, Ala. For more information, visit www.barnhartcrane.com.
Barnhart Crane & Rigging Co. (Home Office) (901) 775-3000 or toll-free (800) 727-0149
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