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6060842 The following might be a useful reference for you. Method of Modeling Bolts in the Bolted Joint by Jerome Montgomery. MrVesselshttp://files.engineering.com/getfile.aspx?folder=843e843c-9c86-419a-bc5d-511019bcf3ec&file=methods_for_modeling_bolts.pdf

Hi JS. No this has not been done and cannot be done. The tank sees dual product service and when shifting from the lower temperature service (80C) to the higher it is necessary to empty and physically enter the tank for cleaning. The tank is then nitrogen purged and the high temperature...

Yes there is. The tank bottom plates are 8mm thick and the annular plate is 14mm thick and 1150mm wide.

I am looking for any past experiences that members may have on this subject. I have a 64 meter diameter high temperature (220C) petroleum storage tank built in 1997 that has suffered extensive buckling of the single fillet lap welded bottom plates to such a degree that one of these lap joints...

Is the weld on a 2:1 SE cover on a manway for an ASME VIII Div 1 vessel covered by the Code. We have several large stamped vessels to be installed in a nuclear waste clean up plant, that after shop hydro and National Board stamping are delivered with a tacked welded 2:1 SE head as a manway...

Section 3.7.5.4 of API 650 recommends the use of API 620 for the design of cover plates, manway necks etc. when utilizing hard gaskets but this can be used for other sheet type gaskets also. The reference is to section 3.20 and 3.21 of 620 but my version (10th Edition 2002) shows the correct...

Tables A-1a/b and A-3a/b of API 650 Appendix A gives optimum sizes of tanks up to 66m or 220ft dia based on course heights of standard plates of 1800mm/72inches or 2400mm/96inches.

First question to be asked is why are you using API 620 which is a Standard meant for pressurized tanks. Secondly if this is new construction it would be more appropriate to use either ANSI/AWWA D100 standard or API 650 Appendix J, as its size certainly classifies it as shop built, assuming...

Try Microprotol. This package comes with various design code options (ASME, BS5500, AD Merkblatter etc.) which can be purchased as separate modules. It also has the ability to produce drawings from the resultant calculations by it's own in-built CAD program and has ACAD and Microstation...

Depending on your diameter to thickness ratio there are two ASME Code cases that might be of assistance to you. Code Case 2286-1 (ASME VIII Div 1 and Div 2) or Code Case N-284-1 (ASME III Div 1) Both of these limit the D/t ratio to 2000:1 with the nuclear case also limiting the minimum...

Send me details of your geometry, materials and the expected loading conditions and I'll take a look at it for you. cxslater@bechtel.com

Does anyone have direct experience of designing and operating 3 or 4 bolt large diameter flanges (up to 50 inches) especially with respect to determination of flange leakage? These flanges are on vessels in radioactive service and mate to rotating equipment which must be removed by remote...

I have a photocopy of a paper written by several professors at the National University of Singapore that is entitled, "A Simple Solution to Cylindrical Pressure Vessels on Multiple Support". I have no direct experience of applying the methodology described therein but can make a pdf...