Pipeline annotation knowledge
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This post was last edited by flute6 on 2010-10-6 at 23:03. Which expert can provide a detailed explanation of the specific rules regarding pipeline labeling? ! ! For example, 90-p-1039-LAI (H3): Please explain in detail what each digit and letter represents. If it refers to the pressure rating, please indicate what that range is; and if it relates to insulation, what is the insulation rating? Thank you
90-p-1039-LAI (H3) corresponds to: xx-xx-xxxx-xxx(x); the first part represents the nominal diameter； The second part is the medium of the pipeline ； The three parts represent the numbering of the pipelines ； The four parts represent the grades of the pipelines ； The number in parentheses indicates the pipeline insulation grade!
How are pipeline grades classified? Is it based on pressure rating? How is the insulation temperature calculated?
How are pipeline pressure grades classified, and what are the symbols corresponding to each grade?
I advise you to take a look at the P&ID homepage image
This is specified in the \"Uniform Requirements for the Content and Level of Detail in Process Design Construction Drawings for Chemical Engineering.\" It’s good to ask many questions, but I suggest you read more books first.
Regarding pipeline grades, different companies use their own classification systems, and even projects within the same company can vary. Pipeline classification is generally determined based on pressure, temperature, and the type of medium, with codes being assigned according to pressure and pipeline material. The temperature for heat retention is determined based on the operating temperature.
Example: P 01 0 101 - 4" - T2A1 -H a b c d e f g a--Code for the medium inside the pipeline； b--Unit code c--Production line code d--Sequential number e--Nominal DN diameter f--Pipe grade g--Insulation type
In standard 20519-2009, under the section on \"process systems\", there is a pipeline labeled as PLG1301-100-2J2-H8. What does this mean? This notation isn’t mentioned in the standard’s description of pipeline grades; I would like to know what the letter J represents here
I’m also a beginner in pipeline design; I’ve just worked on two projects and haven’t encountered pipes with a nominal diameter of 90 yet. There aren’t many pipes of this size, right? Where will I encounter it? ?