NEMOURS BUILDING COOLING TOWER REPLACEMENT

The project consisted of removing and replacing four roof top cooling towers, their piping and the associated electrical/instrumentation work.

This would typically be a big crane to D+R and load the roof with the new piping and then roll back in a month later with a bigger crane to set the cooling tower units. The challenge came into view when we realized that the original cooling towers weren’t structurally safe to rig off the roof in any sort of sizable section. We opted to demo the towers and piping and store them in the mechanical lofts below the roof. At night and on weekends, we ran the scrap from the loft down the freight elevator and out of the building and into dumpsters.

That got our roof clear but how would we load the roof with the new 16” piping without the use of a crane. We designed the entire new piping systems in sections that would fit into the freight elevator and loaded the roof in reverse of how it had been cleared.

This gave us a few weeks to get all of the new piping in place as well as do the prep work in the panels for the electrical and instrumentation package.

Our crews set up the crane on a Friday night and had all of the new units in place by Sunday afternoon. The piping connections were made, the instrumentation was put on line and this customer had badly needed cooling capacity come Monday morning.

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