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Thank you all for the help

I thought the design margin was based from the yield strength and not from the tensile strength? Also, the 1943 unfired pressure vessel link that Christine74 shared (thank you by the way) can you find more information on SA-89? Such as the yield strength, chemical composition, and what...

Thank you all for the help eng741

Thank you r6155 I found it! Thank you all again for the help, eng741

Thank you TGS4, Out of curiosity how did you know the margin of yield is 1.5 times the allowable stress at the given temperature? Is it a rule of thumb? I am always interested in little tips that you provided so I can become more knowledgeable. Thanks for all the help, eng741

SA-89 Gr. B Spec. minimum tensile = 50,000 PSI maximum allowable working stress -20 F to 650 F = 10,000 PSI 700 F = 9600 PSI 750 F = 9000 PSI 800 F = 7500 PSI 850 F = 6000 PSI 900 F = 4400 PSI 950 F = 2600 PSI 1000 F = 1350 PSI 1050 F = ----- The stress goes no further than 1000 F and I could...

Hi all, I am searching for ASTM A-89 Grade B steel yield strength. The pressure vessel was initially constructed with the 1943 UPV code and uses that material. I know the tensile strength and the allowable stresses at given temperatures from the 1943 code book but cannot find the yield...

Thank you all for the help, it is much appreciated

Thanks again I will look more into it

It is and thank you

Thank you for the quick reply The tangential nozzle is just for maintenance purposes. They are wanting to attach the manway tangent to the shell for ease of cleaning. Would there not be limitations on how far the nozzle can be parallel/tangent to the shell since they would have to cut the...

Hello all, I am trying to find documentation/limitations about a manway being tangent to a horizontal shell. I found some documentation and formulas for the manway and how far it can be from the center of the elliptical head but nothing about being tangent to the shell. Thanks in advance

Hello all, Has anyone heard/read about a nozzle attached to a flange? There is a pressure vessel and the contractor would like to create a manhole. Unfortunately a nozzle that is blinded off, running a line of 4" pipe on the opposite end through the pressure vessel, is in the way. The...

Thank you for the help eng741

Hello all, I am trying to find a forum (I believe in API code issues) that talks about citing codes. I had found it not long ago and searched for hours and I have not had any luck. The forum talked about when someone has a code book in a certain year and a new addendum comes out the following...

Thank you for the advice, I will look more into it eng741

Thank you for the immediate responses. I will ask the company about the operating pressure. I assumed the design pressure would be higher (3P/2V) and the operating pressure would meet API 650 since the drawings I have say per API 650. Thank you again for the help, eng741

Hi all, I have a P&ID that give the following info.: Size: 50'-8"O.D. x 42'-0"HG. CAP: 15,000 BARRELS PRES: DESIGN: 3P/2V OPER: X PSIG TEMP: NORMAL 60 F MATERIAL: CARBON STEEL The height of the tank from a drawing is 42'-0" from the bottom shell to the very top shell. My three questions...

I will take a look at that, thank you KLee777

Thank you both for the help, it is much appreciated