Mammoet’s PT 50 ring crane shortens schedule

Mammoet’s PT 50 ring crane lifted all three modules each as a single-piece and from a single lift position. This meant time and cost efficiencies for the client and minimal use of on-site space without compromising safety

Mammoet completed a heavy lift project using its PT 50 ring crane during an expansion project at India’s Paradip Refinery.

First opened in 2016, the refinery is India’s newest facility of its type. This latest project involved lifting a 646 tonne de-ethylenizer, a 1,141 tonne wash tower column and a 1,185 tonne ethylene-oxide reactor. Mammoet’s PT 50 ring crane was used to lift all three modules, each as a single piece, at two locations. Lower capacity lifting equipment would have required each module to be split into two separate pieces but using the PT 50 ring crane allowed installation lead-time to be reduced to between two and three days instead of three weeks.

The ring crane’s high load capacity also allowed it to lift multiple heavy items from a single lift position. As a result, it did not need to be relocated between lifts, shortening the overall project schedule compared with the use of a smaller crane.

Scheduling changes were required due to coronavirus regulations and the customer, L&T Hydrocarbon Engineering, and Mammoet increased resourcing, with Mammoet’s crew extending their stay in India. Mammoet said this allowed the project to be completed in an acceptable timescale for the customer, despite the complications.

The expansion of Paradip Refinery is expected to be completed in October 2021, adding a monothylene glycol plant to the facility, thereby broadening the range of products it can produce.

Commenting on the job an L&T Hydrocarbon Engineering spokesperson said, “The use of Mammoet’s PT 50 ring crane, over a crawler crane, allowed our components to be lifted each as a single module. This resulted in minimal disruption to our construction plans and brought about savings in our overall construction lead time.”