Issues with the production of construction drawings for long-distance transmission pipelines in renovation projects
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As the title suggests, I have a modification project on hand involving the delivery of oxygen; the distance involved is around 7-8 kilometers, with the oxygen being transported from one side of the factory to the other, passing through various turns along the way. Due to the factory’s long history, many civil engineering documents are unavailable; as a result, it is impossible to draw pipe layout diagrams or to locate pipe supports accurately. I have come here to seek advice from the experts on this forum. Faced with such a situation, how should the piping discipline carry out the detailed design? I’m in a hurry, waiting online! I hope the experts here can help out; I’d be extremely grateful!
I didn’t design it. When we work on modifying designs at the design institute, no one comes; we do the modifications and draw the diagrams by ourselves, and then they just stamp them and that’s it. Check the process on-site. Anyway, the drawings are just for show; we will direct the work on site during construction. . .
First, conduct an on-site inspection to determine the general direction and key support points, then draw diagrams. For information that cannot be obtained with precision, note that \"actual measurements are required during construction,\" and account for an appropriate margin when selecting materials.
Relying solely on technical specifications may result in failure during acceptance; formal construction drawings are necessary
Well, it was possible to do that in the past, but now the scrutiny is very strict; you can’t act carelessly
Special cases should be treated specially; I generally agree with the opinion from the third floor. At this point, on-site investigation becomes important; don’t be afraid of the hassle – carry it out thoroughly (to minimize the issues caused by incomplete information). The general direction and key support points can be determined, but the unpredictability of underground structures must also be taken into account; this aspect is handled by the civil engineering team during the design phase. The key is to produce the as-built drawings in the end!
1. Take photos using software like Amap, then process them and combine them to create a rough sketch for the overall layout design. At least understand the general direction of the floor plan. 2. Send letters to departments such as water supply, drainage, electricity, telecommunications, and transportation to inquire whether there are any pipelines passing through the factory area. (There should be a time limit for responses; at least since you’ve started working, if any issues arise, they can be resolved through negotiation.) ) 3. As mentioned above, a thorough on-site inspection will be carried out in conjunction with the civil engineering engineer. Properly prepare the support points for the pipe racks. After the draft is prepared, a letter is sent again to the various departments in Section 2 for confirmation. 4. Coordinate efforts – it’s best to have contact persons and contact information within your organization as well as in the second department. For communication. I hope it can be of some help to you.
The route of the pipeline has been basically determined; no on-site survey was actually carried out. The construction party proceeded with the work according to the planned route of the pipes, making many adjustments based on the conditions on site. The contractor has now returned to me a single-line diagram of the pipes to be installed, but it’s very simple – there are no support points indicated, only the direction and length of the pipes.
Go and inspect the site in person; if necessary, use a ruler to measure the relative dimensions compared to the existing equipment, as modifying it is quite troublesome.