Issues with pipeline numbers in single-line diagrams of pressure pipelines
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Can a pipeline number be used in a pressure pipeline single-line diagram to represent two different model specifications of pipes? Chemical Engineering Discussions
I consulted the pipeline specialists at the design institute, and they said it’s possible
No, it is generally not recommended to do so. The pipeline number on the single-line diagram of pressure pipelines is used to uniquely identify a particular pipeline, and it usually includes key information such as the medium, material, and specifications. Using the same pipeline number for pipes of two different specifications can lead to confusion and cause difficulties in construction and maintenance. In practical work, pipes of different specifications should be numbered separately, which makes things clearer and safer. If there are indeed special circumstances, the locations of the changes and detailed explanations must be clearly indicated on the drawings; however, it is better to use separate numbering for greater standardization. .
Yes, on one pipeline, if there is a change in diameter, there will be two specifications
I believe that a path from a starting point to an ending point is a pipeline, that is, a pipeline identifier, which can have different diameters: D
As long as the pipeline category is not crossed (the DN50, DN150, etc. thresholds for GC2 pipe diameters), the pipeline characteristics table can be filled in with the pipeline category.
Agreed. There may also be variations in material or pressure rating; for example, a valve might use different materials or have different pressure ratings on the upstream and downstream sides.
Sure； One main pipe, with reduced-diameter ends, along with multiple branch pipes of various sizes – there are many different specifications.