4

It may be dependent on the industry, but in my experience that type of information is not included on a P&ID for instrumentation lines. Instead, there is an Instrumentation Installation Specification which defines the requirements for these lines, including material, size, routing, type and location of valves, etc.


3

From Tip #16 — What is the condition of your diamonds? Example d), as I’m sure you can easily figure out, is a heater. With all other things being equal, this one shows the inward arrows adding thermal energy to the hydraulic oil. I have left out the coolant flow arrows, which is common, meaning the coolant circuit isn’t specified. Symbol is clearly a ...


2

I would guess it's a non-standard symbol for a check valve. @NMech is correct that it looks like a diode, but that would not appear on a P&ID. A check valve is a fluid flow equivalent of a diode though. I did find a reference that shows that symbol as a check valve here.


1

Physical location It depends. Ideally, every actutator(including hand operated valves) and sensor should have a unique identifier (Don't know the english term, the german terms are AKZ or KKS). These usually show up in the wiring diagram too. The identifying scheme changes from plant to plant, it is IME unusual to indicate physcial location - usually it's ...


1

To my understanding, autocad belongs to one of the first generations of computer drafting solutions, which did not cater for needs such as the one you are describing. I think this need is cater by the later generations that try to capture the design intent, through various means (e.g. parametric feature based modelling). The progress in this domain -IMHO- ...


1

Axsys may be what you are looking for: http://www.bentley.com/en-us/products/bentley+axsys+process/features-list.htm You can link your drawings to your simulation files (HYSYS, PRO/II etc). I.e. Axsys can read relevant data (heat exchanger sizing, pipes, valves etc) and then allows you to generate datasheets, equipment lists etc. So if you need to make a ...


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