This section describes the methods and procedures to model and extract jacketed piping systems. All aspects of jacketed piping can be accomplished using the current version of Smart 3D. There are currently no specific tools to model jacketed piping as one pipeline or to perform the routing of both internal and external piping in a single step. However, there are enough capabilities within the product and in the notation capabilities within the ISOGEN interface which makes it possible to create all the model graphics and necessary drawings to satisfy material requirements and to communicate fabrication and erection requirements through standard Smart 3D drawing output. This method, referred to hereafter as Redundant Modeling, requires that piping materials are placed in the Smart 3D model for both the external and internal portions of the jacket piping system.
Redundant modeling is a method where internal piping (the core) is contained in one pipeline, and the external piping (the jacket) is overlaid on the internal piping in a separate jacket pipeline. This allows for the independent extraction of internal and external piping materials, using ISOGEN, without any problems with overlapping segments. For example, if piping area 01 has the requirement for jacket piping systems, then create an associated pipeline to contain the external piping. Redundant modeling is the best way to handle jacket piping systems when the contractor's scope includes detailed fabrication drawings, isometric drawings, material procurement, and precise configuration depiction.