Field erection cost and time can be greatly reduced by modularisation, particularly important for projects built in areas of limited work force or facilities. The need for heavy lifting equipment and scaffolding can be minimised or eliminated, saving time, space and costs. The advantages of modular construction are detectable in terms of quality, since a controlled shop environment provides skilled, specialised work forces and facilitates inspection and monitoring to assure quality products.
We have considerable experience in modularisation of very large heaters for transportation by road, rail and ship.
Regardless of the type or size of a fired heater or heat recovery boiler, the safe and correct assembly of its many components is critical to the successful performance of the unit. The steel casing and structure, refractories, radiant and convection coils, alloy supports, stacks and ducts can each be pre-assembled prior to shipment from fabricators’ shops.
Modular construction typically means large-scale pre-assembly, which combines the assembly of various components into complete, integral units or sub-units.
The most frequent application of modular construction is the convection section of a fired heater or heat recovery unit. This comprises a large number of tubes with associated manifolds and return fittings, tubesheet, refractories and steel casing with structural members. Modular construction can be executed to any level, even to complete heaters, with burners, piping and duct work installed.
Modules are structurally integrated and 'self-protecting' to resist damage in shipping and handling, and ease installation in the field.