What does this symbol mean in PID?
Thread Content
The image only shows a part of it. This is the PID diagram of the plant’s cooling water system. What do A/G and U/G mean in this diagram? What does B above the arrow mean? Does A/G U/G mean above ground/below ground? Does B refer to underground pipelines? This is my first post.
Firstly, A/G and U/G refer to above ground and below ground respectively, which is clear. As for what B represents, I think it should be the protection for pipelines
Do not post the same thread repeatedly~~~
Above Ground; Under Ground B may represent pressure levels – specific details can be found in the legend on the homepage of the design institute that designed the pipeline
Haha, still haven’t guessed it? It means buried underground, lol
I couldn’t find the PID legend, so I have no idea. :'(
This post was last edited by ZXY_ZVKP on 2019-1-18 at 14:20. Above Ground/Down Ground – that’s the boundary between above-ground and below-ground areas; flowcharts usually indicate this in this way!