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To: Doug & All the Experienced Engineers out there, I really appreciate your offer to help me review my MAWP/V Calcs spreadsheet. I've posted the spreadsheet on my public URL at http://www.geocities.com/kevllt/LPTank/MAWP_V.htm All comments and suggestions are very much appreciated.

Hey fellow ME's, I am finally done with my spreadsheet for the API 650 Low Pressure Tanks MAWP/V calculations. Thanks. Kevin

Mr Carthago, Thanks for your further explanation. I was almost confused the use of API 579. I really appreciate all your effort though. To All, I do realize that there are many engineers out there who has already developed a spreadsheet to calculate MAWP/ MAWV for API 650 Low Pressure...

Thanks everyone for all your precious inputs. Thanks for guiding me into the right track, cause I would have based my calculations on the PV Handbook, if it wasn't for y'all's precious comments. Will any of you care to review my spreadsheet once I'm done? Thanks. kevllt

Sorry fellas, I wasn't aware that the postings are inter-related? I thought that the postings were meant for different group of engineers, ie. Chemical, mechanical, or structural and I just needed a feedback from different disciplines. Thanks for making me aware of it. At least now I know...

Hi fellow Mechanical Engineers, I have some difficulty in calculating the MAWP & MAWV of low pressure Storage Tanks. I had spent long hours on the Pressure Vessel Handbook and I'm still not sure about the relevance of my calculations. I have almost a hundred tanks to determine the MAWP/V...

Hi fellow Engineers, I have some difficulty in calculating the MAWP & MAWV of low pressure Storage Tanks. I had spent long hours on the Pressure Vessel Handbook and I'm still not sure about the relevance of my calculations. I have almost a hundred low pressure storage tanks, some with conical...

Hi fellow Mechanical Engineers, I have some difficulty in calculating the MAWP & MAWV of low pressure Storage Tanks. I had spent long hours on the Pressure Vessel Handbook and I'm still not sure about the relevance of my calculations. I have almost a hundred tanks to determine the MAWP/V for...

Thanks again Milton. Sorry for leaving ut the details of my Atmospheric Tank. You are right on the money with your statement that my tank is cone roofed with an MAWP < 22psia. The tank has dimensions of 12 ft Dia x 24 ft high. Well the conservation vent is set at 8 in. WC, while the MAWP of...

Thanks Milton. We already have a program that calculates the sonic velocity flow rate. However, I am just having difficulty determining what density to use to calculate the relief flow through the coil tube rupture. If I use the density of the saturated steam at 40 psig pressure, 0.13...

The sonic flow calculation is not something I do very often so I'm certainly not an expert. I read through the section of the Crane book that discusses this issue. The texts that address this issue are: "Further decrease in the outlet pressure will not be felt upstream because the pressure...

Hey all, I was reading through this forum topic because I'm having some trouble with N2 regulators. And needless to say, I'm impressed with the responses. My problem involves some instrumentation work, control valves failure analysis. My system contains a letdown regulator from 70 psig N2...