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Howdy All, I have a bit of a value engineering problem, and would like to see what your thoughts are on my solution. I'm dealing with a pipeline which is carrying high TDS seawater (lots of salt), at a pressure of around 75 barg. I have to take a sample from that line, so there's a branch...

Ed, That's exactly what I was asking; I think we're really close to a solution. To give more insight, I am dealing with a vertical tank which is open to the atmosphere. The external forces can be considered negligible (for now), and I plan on using a separate equation to derive the loading due...

Thanks for the reply, Stephen. ASME RTP-1 is specifically written for FRP vessels with pressures up to 15 psi. Meaning that it's not as stringent as the other codes for pressure vessels. However, my question is more related to the theoretical applications of these given values. If you have any...

Hi All, I'm trying to use the ASME RTP-1 code to calculate the minimum allowable thickness of a torispherical head on an FRP tank. The equation I'm using is 3A-230, it's the first case: t = (M*P*Rc)/(2*(Su/F)) I'm now unsure of the pressure value, P. The formula doesn't really define it in...

Amen to that. Aljosa Mitrovic Mechanical Engineer

Thank you for your replies, but I think you misunderstand my questions. I am aware of the rules of thumb and have considered them in my primary design. I am asking for references which specify industry standards, if there are any. From what I gather, they don't exist. Bimr, I'll check out...

Thanks for your reply. Just to give you more details, the fluid in question is municipal water at ambient temperature, and the piping is located on a skid. Would API RP-17 apply in this case? As I mentioned, I'm fine with using the rules of thumb, but I'm on the high end and want to back up my...

Howdy all, Is there an API or any other US standard that specifies acceptable velocity limits in metal pipes? I know there are a lot of general rules of thumb that people use, and I'm familiar with them, but I'm trying to make a case for something and would like to bring up reference...

I understand now. You are correct, the ASME certification is a requirement, but not the API sizing. Thanks again.

Thank you for reply, Mr. Ivanovic. Just for clarification, what you are saying is that if the valve was sized according to ASME Sec. VIII Div.1, the orifice designation is not applicable? Does ASME have its own designation tables? I have received many valve datasheets for a project, and my...

Hi all, I have a quick question on how nozzle orifice areas are classified according sizes. (Sorry if this is in the wrong thread; I thought it fits best here since to my understanding, the BPV Code, Sec. VIII, Div. 1 is used as a primary design basis on pressure relief valves. Please correct...