7 replies to this topic

[IonCube]

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

[Bobby Strain]

I found this through a search

https://www.google.c...T4ULWXngFlLRmZT

 

Bobby

[breizh]

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.

[IonCube]

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

[breizh]

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.

[IonCube]

What is th way to calculate test duration. I know how to calculate test pressure?

[breizh]

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.

[IonCube]

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