across a functioning railway line, and into a refinery unit. Teams faced a broken water main the day before the haul, the resulting last-minute route change, and less than 3” clearances to get the reactor into the unit. Te reactor made the scheduled railway crossing and was in place on time.
back to the 1930s, to determine exactly where the weak spots might be. As a result, the project, which involved lifting ten 270-ton condensers, some of them over a bank of transformers, went smoothly. In Washington State, Barnhart was tasked with removing an 80’ diameter carbon steel containment dome and polar crane from a nuclear facility. Te dome weighed 145,000 pounds and the thin carbon steel would bend and flex during lifting. Engineers analyzed the dome, custom-designed a system of brackets to stabilize it, and determined where to attach the rigging for optimum stability. Tey were then able to lift the dome off of its concrete base. Te crane was successfully transported on a Goldhofer trailer, and the job was finished with no injuries and ahead of schedule. Other recent jobs were safely carried out at hydroelectric dams, in live units of refineries, at a dock with a 17’ tidal swing, and even in “clean rooms” where small traces of dirt would cause contamination.
With over forty years of project experience behind them, Barnhart has developed a culture that leads them to expect the unexpected during any project.
After a competitor won a bid but was unable to get the permits,
Barnhart stepped in at the last minute to haul six large combustion units. Tis was despite having to secure permits, disassemble and reassemble the transporter six times, remove an old building, cross bridges on the haul route, and ease a load almost 18' wide down an 18' to 19' wide road. Te job was finished ahead of schedule, just before Christmas.
While decommissioning a power plant in Ohio, Barnhart engineers needed to go into investigative mode. Old transfer lines and sewer lines weakened the ground, posing a risk that it might collapse under the weight of the 600-ton crane. Engineers analyzed the soil compaction and researched different sets of records, going
Two 850-ton strand jacks lifted the a 1000-ton ULSD (Ultra Low Sulfur Diesel) reactor with the uprated 1330-ton spreader bar. Barnhart used new 25" wide slide track atop 8' girders and new, high-capacity sliding end trucks.
WIRE ROPE EXCHANGE NOVEMBER-DECEMBER 2011 27
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