Thank you both for the replies, rmw I did check on the website but did not have much luck.
Katmar, I am pretty new on this I will do a search on down leg for self venting flow.
Have a nice day
Are there any rules of thumb for design of seal legs besides taking into consideration that the height of the system should be larger than the pressure of the system?
thank you all for the suggestions, I checked the specs for this system and the NPSHA/NPSHR margin is only 1, which from literature reviews indicates is not enough (literature indicates at least 5). The pumps are installed in parallel, with a common header. We tried doing a velocity study but...
Sorry if I misled you all with my explanation. I have a set of three parallel pumps that draw water from an open pit. Ideally we'd like to have two pumps running and one on stand by but with current conditions all three pumps are running all the time. Now, we are undergoing an expansion and...
I was wondering if any body could lead me to a better understanding of suction lift. I've been able to learn a few concepts from the Cameron Hydraulic Data book, but from what I've seen, the use of a set of centrifugal pumps in parallel we have at the plant is not ideal for this kind of...
the line is not heat traced, and the temperature of the sulfuric acid is maintained at approximately 65-75 degrees F. Thanks for the link I will look it up.
Hi,
I've been going through the threads looking for information regarding the mechanism for corrosion of carbon steel piping under chlorinated sulfuric acid (98-96%) service. One of our spools failed (it had a hole in one side inside the pipe and the corrosion was uneven) and I'm trying to...
As a matter of fact the flow becomes chocked as the gas experiences both restriction and expansion.
I'd be more than happy to get a hold of some software to do the calculation however with the current economic downturn it is difficult to do since our corporate office cut our budget.
I think...
Hi,
Recently I came across a copy of "Gas-Flow Calculations: Don't Choke from Trey Walters" that describes the behavior compressible fluids undergo as they travel down the line. He describes a series of steps and iterations to carry out in order to come up with an accurate solution to...
desnov74,
haven't you noticed that this trend is in every single industry? i.e. doctors, teachers, nurses, engineers, people without university education included etc. seem to be getting way too comfortable with making money without having to work "hard". I suspect this is the reason for our...
mtngreen,
You are absolutely right. As a matter of fact according to operations (before my time) those pumps would cavitate quite often. It seems the previous engineer worked on this system but unfortunately the data left with him so it's difficult to say how the system was analyzed in the...
Thank you all for the great tips. I will start working on gatherind field data right away. We are scheduled to put pressure gauges sometime today or tomorrow. I will continue posting as we work towards solving this issue. Again thank you and have a great day.
