Moving large process-plant pressure vessels usually requires special handling facilities because of both the size and weight of the vessels. The extreme weight of many process vessels must be dispersed to avoid damage to docks, roadways, and ground surfaces. Two vessel moves have demonstrated how a temporary mat system can be used to provide an adequate loadbearing surface for moving a vessel from fabricating facilities to final plant site. Davenport/Mammoet, a heavy equipment transportation company in Rosharon, Tex., used a temporary mat system made by Uni-Mat International, Houston, to disperse the weight of a 150,000-ton recycle colu...

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