A 6″×4″ eccentric reducer (FOB) is welded to the west side of the tee. At a centerline elevation of 110′-3 5 / 16″, an elbow turns south, travels 3′-2″, turns up 2′-0″ into the Main pipe rack, and tees again, branching in the east and west directions. Equidistant between the two pumps, the line tees with the branch oriented up to create another vertical run. A short vertical run of pipe is installed before two elbows, whose centerline elevation is at EL. A check valve, which is attached to the discharge nozzle, precedes a block valve, whose handwheel has been rotated 45° to the southwest. Rising vertically out of the pump discharge nozzle B, the configuration is a 6″ NPS. Line 01-7-C30-6″/4″ shown in Figures 10.28 and 10.29 is a long line that connects the discharge nozzles of pumps 01-P-101A and 01-P-101B to nozzle N4 on vessel 01-V-101. The fitting, flange, and valve symbols created in the previous chapters can be inserted into their appropriate locations. Draw all single-line pipes, those 12″ in diameter and smaller, with a 0.53 mm lineweight. The centerlines for double-line pipes are represented as a Center linetype. Pipes 14″ in diameter and larger are drawn double-line with actual OD dimensions having Default lineweight. This view will be especially beneficial to help visualize the routing and placement of pipe components needed to accurately depict the lines on the arrangement drawing. The 3D modeled, isometric view of each line is shown in the upper right corner of the drawing associated with each pipe. The dimensions that are needed to place the pipe on the arrangement drawing in its proper location and orientation can be found on the various dimensioning charts and vendor drawings found in this chapter and in the appendix. The written descriptions of the configurations will not include exact placement or size dimensions of the fittings, flanges, or valves required for the layout. That is, the written explanation of the development of each pipe configuration found in Unit-01 will dictate the sequential placement and orientation of fittings, flanges, and valves as it follows the direction of the flow of the commodity within the pipe. In procedures 7 and 8, the step-by-step routing of each pipe configuration from beginning to end will be described relative to the commodity flow direction. Reference drawings: Mechanical Flow Diagram, equipment vendor drawings, and Piping Specifications. Procedures 7 and 8: Development of pipe line configurations for Unit-01. When procedure 6 is completed, your drawing should look like Figure 10.15. Change the linetype of those portions of the beams, columns, and foundations that are hidden from “continuous” lines to “hidden” lines. The dimensions needed to draw and orientate the steel columns are provided in the section and detail drawings in Figures 10.11–10.14. Use the necessary commands to draw the main pipe rack and miscellaneous pipe supports. Change the linetype of those portions of the foundations located below the mechanical equipment from “continuous” lines to “hidden” lines. The dimensions needed to draw the cages are shown in Figures 10.40 and 10.41. The dimensions needed to draw and orientate the ladder and platforms for 01-V-101 are supplied with vendor drawings. ĭraw all mechanical equipment with the necessary commands.Make Equipment the current working layer.
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