In the pipeline industry it is not uncommon to experience massive flange misalignments when trying to install a new gasket. I have been asked to write a proceedure for proper installation and torquing of flanges in our system, but I don't know how to adress these misalignment issues. Stating...
I'm trying to figure out the freezing point og ethylene glycol/water solution at various mass % concentrations. Heres the problem: What I remember from Highschool Chemistry is freezing point depression is calculated by Delta F.P= Kfreezing*molality. That will produce a freezing point that...
On the first page of my program you fill in data about the pipe that can be obtained before the fill (and should be). That will be used to estimate the volume of the line and the amount of water needed to bring it up to pressure. Then you would add data about the test such as begining and...
TD2K,
Those are my feelings also and yes the proceedure was written by a non-engineer. My hope was not to use a high entrained air estimate to justify a hydrotest but to have it at the begining of the hydrotest, just after pressuration to know if the feild engineer had to drain the line back...
Alright i have another hydrotesting question. We will need to perform a hydrotest with product as our media, does anyone know the relationship of the density of fuel oil to elevated pressure, and the relationship between the density and temperature?
Thanks
Ian
In our hydrotesting guidelines it is suggested that the engineer calculate the percent of entrained air in the pipe (6-30" hydrocarbon pipeline). I'm attempting to simplify and standardize our hydrotesting program, but I can't seem to find any method for determining the percent of...
Alright this is a dumb newbie question, but I never learned anything about boilers in school. I've just been asked to evaluate our heat tracing at one of our sites. There we generate steam with 2 500 hp Kewanne units. I talked to an engineer today at our maintenance contractor about all of...
Alright I feel really dumb, but I just can't figure this one out. I spent several days building a very helpful spreadsheet, then I password protected it. Then I covered the entire sheet in a transparent chart so you can only axcess the input fields. Now I'm sure no one can bungle up my sheet...
I have been working on organizing and verifying our hydrotest data. Last week I came across a few test that were performed with a 70:30 mix of water and antifreeze. The method I am using from the Pipeline Rules of Thumb Handbook does not take a mixture like this into account. Being a dumb...
Eugenp,
I tried to write you at your yahoo address, but it was returned. Please forward the PDF file to datsun661600@hotmail.com .
Thank you for all your help.
Ian Miller
Thanks for all the great information. Vista Research confirms many of the doubts I was having about the accuracy of hydrotesting as a leak detection method. Has anyone had any experience with the company or its products, especially in large diameter (24") high pressure (200psi)...
CRG,
Thank you for your response, it was very informative. As I dive deeper into this problem the The more confused I become.
The systems I am pressure testing are burried ductile iron pipelines. I'm just examining our methods and I have found some proceedures I do not understand the basis...
As I am sure many of you are aware, after hydrotesting a pipe a series of calculations must be completed to correlate the actual pressure trends with calculated effects of thermal expansion, pipe wall expansion durring high pressures ect. I was wondering if anyone knew of a software package...
