Regarding the pipeline numbers on the PID diagram!
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Who knows how pipeline naming works on PID? Including the material code of the pipeline – do different design institutes use different codes as well? Or are there unified material standards? ? ?
There is a unified standard, HG20519.37-92. Let me give you an example to illustrate this. For instance: -300. A1A-H PG represents the material code, referring to process gas; 13 is the main item number, which is the sequence number for different systems in your factory’s installations; 10 is the pipeline sequence number. PG1310 together denotes the pipe section number, while 300 indicates the pipe diameter, usually referring to the nominal diameter. A1A represents the pipe grade, and H is a code indicating insulation or soundproofing
Generally speaking, different design institutes have different codes as well
The way pipeline numbers are indicated on the PID for each project varies; you should check the unified regulations for piping in your project, as those will certainly contain detailed explanations :) :victory:
Different projects have their differences. For example, this is the case with material grades~ The PID description also covers some of this.
Although there are unified standards, at present the pipeline numbering in various design institutes does not fully comply with these standards, and the numbering for different projects within the same design institute also varies
The pipeline numbers on a PID are primarily determined by the patent holder (or the provider of the process package); different patent holders use different methods for assigning pipeline numbers on their PIDs. If the design institute is responsible for designing the process package, then it is the institute that assigns the pipeline numbers. If, however, the design institute is only responsible for the detailed design, then the assignment of pipeline numbers still falls to the patent holder.
Don’t we have **standards? Why isn’t anyone following them, and why is no one overseeing this?
This should be a **uniform standard; what could possibly be different? But sometimes different standards are applied, which leads to such problems. Old standard or new standard?
Please refer to the \"Unified Regulations on the Content and Depth of Construction Drawings for Chemical Process Design HG-20519-92\", which provides detailed explanations. However, the material code is not unique; it is usually expressed in the form of an English abbreviation, which should be indicated on the homepage image.
Take a look at the homepage image; there is usually an introduction there. National standards are not necessarily suitable; different design institutes have their own standards
The \"Unified Regulations on the Content and Depth of Construction Drawings for Chemical Process Design HG-20519-92\" specify that, for example, RO101-DN400-M1B-S80 denotes a crude oil pipeline with a DN400 diameter, pressure class M, made of carbon steel, equipped with steam heating, and an insulation thickness of 80; the pipeline segment number is 101