vertically by way of beams and custom struts that created a complete and safe structure.īoth elevator cars provided vertical transportation to the seven landing levels on the splitter to assist with turnaround activities being performed simultaneously at all levels. The elevator and scaffolding were braced simultaneously every 29 ft. The elevator tie-in system distributed the loads back through the scaffolding and evenly along the entire scaffold structure. Their elevators operate very smoothly, putting less torque on the scaffold.” “They have a newer product line, which was important for this project. “Century is very responsive, and they’re very knowledgeable about their products,” King said. Having worked together in the past on several projects, Century had the experience and confidence needed to attach its elevators to Excel’s scaffolding system. capacity dual car elevator that carries 30 workers per car. Houston-based Century Elevators installed a 6,000-lb. “This relationship fostered an environment that helped to bring this project in on time and on budget.” “Century, Excel, and Gallop worked so closely together that it was almost as if we were all one company with the constant flow of communication,” expressed Gil Prado, regional sales manager with Century. The seven decks also provided landing levels for two temporary elevators that moved men and materials up and down the 262 ft. Utilizing compression or “butt” ties created a higher degree of stabilization and a greater safety factor for the larger decks. That meant that the lower part of Excel’s modular scaffold system that wrapped the entire tower had to be built with shoring legs with allowable loads of 37,500 lbs. The work had to be done without any of the equipment making contact with the split- ter itself. Execution went flawlessly on this project.” “We put a lot of emphasis on the planning side and our manufacturer, Deltak Manufacturing, was able to fabricate components that would distribute the weight of everything. “The whole purpose of the scaffold and elevator structure was to save crane time,” said Chad King, vice president of operations, Excel Modular Scaffold. Additionally, the dance floors provided overhead protection from the crane work above, allowing workers to continuously keep up the pace of work with no stoppages due to overhead hazards, including the transporting or ‘flying’ of the MD trays by the overhead crane. capacity, oversized decks were large enough to provide a staging area for supplies, reducing the number of trips up and down the side of the structure for workers, and housing the dehumidifying hoses used during the process. The dance floors, provided by Excel Modular Scaffolding, were fully enclosed with netting and adhering to OSHA’s 1926 Subpart L for scaffolding included toe boards, mid-rail, and top rail. high and featured seven dance floors or decks that provided man-ways for workers, tools, and the necessary parts and equipment to complete the work. The scaffold structure that surrounded the unit was 262 ft. The nature and design of the C2 splitter made achieving the goal challenging. Gallop Tower Field Services oversaw the logistics on site during the massive turnaround that included creating the safest possible work environment for more than 2,500 workers, while maintaining an efficient working schedule. (Other benefits of routine maintenance include a decrease in emissions and leaks as a result of better performance, and greater operating efficiencies resulting from process upgrades.) Maintenance to the C2 splitter was performed to increase equipment service life and reduce the number of costly equipment replacements. The unit was expected to be down approximately 50 to 60 days for the work to be completed. annually in support of the company’s ethylene integration strategy. The expansion increases the ethane-based ethylene capacity by approximately 230 million to 240 million lbs. In September 2012, Westlake announced plans to perform routine maintenance on the plant’s C2 splitter-a tower structure that splits chemicals- as well as expand its Petro 2 ethylene unit. Sulphur, La., is home to Westlake Chemical Corporation’s largest and most productive polyethylene plant.
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