During one of my interactions with ASME code committee, I was informed that ASME Section VIII div 1 permits the use of stiffeners in the design of flat circular heads, bolted covers or flanges. The requirements of U-2g are to be satisfied.
V.Dwaraka Krishna.
Dear esce/associates,
Rectangular bolted and gasketed flanges together with mating Covers are often used for Header Boxes of Air Cooled Heat Exchangers designed to ASME and API Codes.
However the design rules of rectangular flange are presently not covered by ASME codes.
If you want this to...
Dear Heyner,
I am interested to have your spread sheet for pressure vessel saddle design. Kindly send to my E-mail
v.dwarakakrishna@idpeltd.com
Regards
V.Dwaraka Krishna
Yes you are right. If you are looking for thin wall bellows design then follow EJMA. Such bellows are normally used in piping. For bellows used in Heat Exchangers you can follow TEMA or ASME.These are termed as Axial Expansion Joints.
Regards,
V.Dwaraka Krishna.
dwarakakrishna@sify.com
Yews you are right. If you are looking for thin wall bellows design then it is EJMA. Such bellows are normally used in piping. For bellows osed in Heat exchangers you can folloe TEMA or ASME.These are termed as expansion joints.
Regards,
V.Dwaraka Krishna.
dwarakakrishna@sify.com
If it is of a hollow rectangular shape with round corners, you can calculate it as per ASME Sec VIII div 1 Appendix 13, where detailed rules are available as also worked out examples. If you provide me with design details I can size the header for you.
sincerely yours,
V.Dwaraka Krishna...
You can design the bolted rectangular unstayed flat cover as used for cover plate type header boxes of Air Cooled Heat Exchangers as per ASME Sec VIII Div 1 UG 34 rules usinfg formula (5). Bolt load W to be computed correctly for rectangular configuration taking the guide lines from Appendix 2...
Dear Babyyoda,
The vessels with the conditions you describe do not fall under the purview of ASME SECTION VIII Div 1. But still they are pressure vessels. If you have to design such low pressure vessels as per ASME Code then you must adopt the design pressure with in the purview of the code...
Dear RSAUK,
It is a very good question of a practical background. You can apply a 13 mm buttering of INCONEL weld overlay on the bevels of both the nozzle as well as the shell and then weld the connection with inconel welding. This is a costly proposition, but technicalyy very sound and does not...
Mr. Juanq,
Sorry for my long silience. I have developed certain guidelines with sketch for sizing the header based on various parameters. Please give me your E-mail so that I can send it to you for your guidance.
Rgards,
V.Dwarakakrishna.
E-mail; dwarakakrishna @sify.com
