Division of design interfaces for underground pipes in the plant area

The first question: regarding the boundary between pipes inside and outside the area, it depends on how your pipes are planned; generally, the pipes that enter and exit the area are planned in a unified manner by the utilities engineering department. Experienced project managers, when carrying out the overall layout of a project, will communicate with the project managers of other projects outside that area to agree on where the main pipelines should intersect. As for whether the buried pipe at the interface is 1 meter within the BL line or 1 meter outside the boundary line, this is a design detail that will be considered by the civil engineering team. The second question is whether the valves (wells) and instrumentation components (wells) on the pipelines are located inside or outside the area, which depends on whether the valves and instruments are shown within or outside the boundary lines on the PID diagram. In short, all the pipes, valves, and instruments shown on your PID diagram must be designed and installed within your installation area. The design details on the piping layout diagram should be consistent with those on the PID diagram.

I agree with the second point, but not the first one.

Actually, I’m not quite sure what the first question here refers to specifically. As I understand it, it’s about from which point within the boundary area the buried pipes should be led out.

The first question is: where is the design boundary within and outside the land management area?

At first, I understood it from the perspective of pipeline layout design. Looking at your rephrased question, does it refer to the division of responsibilities in the design work within and outside the buried pipeline boundary zone? I’m not sure if I understand it correctly. This should be the scope of work division specified in the project design management document. If I still don’t understand correctly, then I dare not say anything; I’ll take a look at other answers first.

It is the division point for design work inside and outside the buried pipe boundary area.

The design principles stipulate that the design boundary for pressure-flow underground pipelines is defined as 1 meter outside the BL line of the installation (or boundary zone)； Valves (wells) and instrumentation components (wells) on pressure-flow underground pipelines are installed within the unit (or boundary zone) ； The design interface for gravity-flow underground pipelines is divided into the connection wells or inspection wells located outside the BL line of the installation (or boundary zone); the installation team is responsible for the pipeline design up to the manholes, while the overall design team is responsible for the design of the manholes themselves.

I’ve learned that, regarding the division of tasks within and outside the project area, in the past it was the civil engineering department that would handle negotiations with the general contractor; the specific details of this task allocation weren’t thoroughly understood