mongstad panorama22 (FILEminimizer)
mongstad panorama22 (FILEminimizer)
MODULEitus
a general understanding of Modules 
Index, Section  5, Modules Onshore
General
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These comments are by way of introduction to Modules Onshore and are  followed by  a second page of other generalisations on Onshore Modules. There then follows 3 typical Type examples relate to typical; examples.

Modules Onshore often have the reverse of restraints  that are common for Offshore, the main one being that  lack of Space Offshore is not often a premium  happening Onshore. Where lack of Space is a problem then as with Offshore,  modularisation becomes more attractive. Two projects (Mongstad  and Shell Quest Carbon Project) separated by 3 decades  hang on the availability of Space to allow some modularisation.  They  both rely on  space availability to favour some modularisation, both are not heavily modularised with large one piece module.
The result of the Study to Modularise the Mongstad Refinery established just two General Process Modules, Modularised Boilers and Platformer (1000 te mark each). All other equipment was  where ever possible dressed and systems of commonality established for design.  Apart from the Modules mentioned other assemblies of Machinery of the order of 300 te, and Pipe rack assemblies  of 250 te which had a repetitive content were  extensively used.
The first items in the figure at the top of the page are a Reactor Regenerator and a Concentration column of the order of  400 te each.  Both are substantial in size and weight  and in a dressed state provided complications in transportation and installation even without additions to establish a module form. The figure shows twin ringer cranes (outlined in Red,350 te capacity) Lifting and slewing the Reactor  into place on a heavy  RC structure(outlined in fawn). Such items in Module steel do not show an advantage
Reactor RC Support
Reactor RC Support
Reactor Vessel
Reactor Vessel
Vessel from Ground into Support
The Diagram at the head of this introduction shows a Process Train at Mongstad. Mongstad had some space and bedrock for foundations. The Project Modularisation Study showed that concentration of equipment did not necessarily show an advantage. Concentration puts  demands on Classification Uplift as hazards become adjacent or intrude into safer areas. Another aspect is weight  or mass.