Piping design specialty: Single-line diagram. Is it necessary to indicate the heat tracing pipelines?
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Pipeline design specialty: If the heat tracing pipeline is indicated on a single-line diagram, is it shown together with the pipe that is being heat traced? Should it be a single-line diagram showing only the heat tracing tube?
A single-line diagram does not need to show the heat tracing pipelines; this can be indicated in the material table.
There are two types I’ve seen: one shows the heat tracing pipes with dashed lines on a single-line diagram, and the other is a separate heat tracing diagram
Single-line diagrams are generally prepared through conversion design by construction companies for pipeline prefabrication.
In our factory, dashed lines are drawn next to the pipes to indicate the heat tracing tubes
Today, the axonometric drawings (single-line diagrams) of pipelines are generally prepared by the designers; at least a schematic diagram along with accompanying explanations should be provided for the heat tracing lines, otherwise there will be no basis for construction.
The single-line diagram does not show the heat tracing pipes; a heat tracing gauge is sufficient
The single-line diagram shows that heating is provided to facilitate construction; a separate table for the heating system is included, detailing aspects such as the diameter of the heating pipes, their length, and the source station from which the heating comes
You are referring to the production of drawings – the construction unit extracts the drawings based on the model data provided by the design institute; no changes are allowed, and approval is required
Wrong; even if design institutes use 3D design, the output drawings are still in paper form. The design institute’s models (including data) will not be submitted to the owner and the construction contractor. The single-line diagram required for construction is one that is drawn independently based on the construction version of the pipe layout diagram prepared by the piping department of the design institute (referred to as Version G). Of course, if one has sufficient experience, it may not be necessary to draw such a single-line diagram.