I need to develop a Hydrotest P&ID (not isometric) from an existing P&ID. It would be lot easier if I have some sample so that I can familiarize myself with the conventions & symbols for this particular task.
Currently reading: Chemical and Process Plant Commissioning Handbook - Martin Killcross (Elsevier, 2012).pdf
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Hydrotest Sample P&id
#1
Posted 16 October 2019 - 03:07 PM
#2
Posted 16 October 2019 - 04:21 PM
#3
Posted 16 October 2019 - 06:23 PM
Hi ,
Let you use your favorite search engine, key words : Hydrotest standard procedure
http://kolmetz.com/p...sting_Rev01.pdf
good luck
Breizh
Edited by breizh, 16 October 2019 - 06:25 PM.
#4
Posted 16 October 2019 - 11:28 PM
Guys thanks for your reply. The thing is that I want to develop a hydrotest diagram (& thus procedure isn't required). Whatever I had searched regarding this diagram comes out as an isometric diagram with highlighted nodes (like HAZID) but I need to construct hydrotest diagram using P&ID (please see attached PDF)
HydroTest.pdf 8.55MB 29 downloads
#5
Posted 17 October 2019 - 12:42 AM
Hi,
It's not that complicated .As soon as you have defined the conditions of the test (pressure ,duration) , the equipment ( hand pump, blinds, gaskets) you need to split your PID (lines) in a set of lines to be tested one by one , record the condition of the test ( time start , working pressure at the start , working pressure at the end , end time) , validation criterion.
You need to establish a template with all the information related to the test and signatures as well to keep track of the work .
Good luck
Breizh
Edited by breizh, 17 October 2019 - 12:53 AM.
#6
Posted 19 October 2019 - 05:30 AM
What is th way to calculate test duration. I know how to calculate test pressure?
#7
Posted 19 October 2019 - 07:29 AM
Hi,
A few hours , the pressure set and applied to the system should be stable !
This is purely empirical .
Breizh
Edited by breizh, 21 October 2019 - 11:52 PM.
#8
Posted 21 October 2019 - 11:44 AM
I have a question which I cannot understand from this markup. Sometimes this symbol is used *| & sometimes |* I cannot comprehend the orientation thing especially of * symbol
Secondly lets say my pipelines are attached to an equipment; design pressure of which is 27barg is it OK if I write a test pressure of 1.3x27=35barg without getting into the concept as laid out in ASME B31.3
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