How to design the pipe rack

Update:14-03-2020
Summary:

The design of the pipe rack requires extensive planning […]

The design of the pipe rack requires extensive planning and coordination with other engineering teams. The rack design involves the following activities.

1. Pipe rack width calculation.

2. Pipe layer elevation calculation.

3. Pipe rack pipe layout

4. Channels on the pipe rack

5. Cable tray arrangement

6. Future space

7. Spacing between rack beams

8. Pipe rack loading to civilian

9. Flow meter in pipe rack

10. Tube holder on the tube stand.

11. Gas station on pipe rack

12. Expansion ring on pipe rack

Pipeline layout

The rack should be designed to run the pipes as short as possible and provide headroom for headroom on the primary, secondary and platform. The main production line should remain on the lower levels. Upper level utilities and thermal processing lines.

Cable tray

In general, the top layer should be reserved for cable trays (if not provided in underground trenches) and instrumentation cable ducts / trays. The cable bridge should be laid with the necessary clearance to prevent the structure from fire.

Row grouping

Hot and cold wires should be placed on the same floor separately. Larger wires should be kept closer to the rack posts.

Spacing between pipes

The minimum distance between adjacent lines should be based on the outer diameter of the larger flange (minimum rating should be considered 300 #), the outer diameter of the smaller pipe, the separate insulation thickness and an additional 25 mm gap (even No flanges appear) to determine. The actual line spacing, especially in the "L" -shaped bend and ring position, should pay attention to the thermal expansion / thermal contraction / non-expansion of adjacent rows. No expansion / heat shrinkage may prevent the adjacent wires from expanding freely in the "L" shaped bending position.

Pipe anchor

If the concept of an anchoring bracket is adopted, anchorage on the rack should be provided on the anchoring bracket. Otherwise, the anchors should be distributed on two to three consecutive brackets. Anchor points should be provided within the equipment on all hotlines leaving the equipment.

Limit valve

Cross-device production lines (within the equipment or from the equipment to the main pipeline) are usually equipped with shut-off valves, blind plates, and drain valves. Shut-off valves should be grouped. It is best to install shut-off valves in vertical pipelines. If the shut-off valve must be located in an elevated pipeline, a staircase access to the platform above the pipeline should be provided.

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