Hello everybody, i have a spherical desander at 5000 psi, which was constructed for the American market at MDMT-20, now the Canadian market is interested in this equipment but the MDMT is -40, the non pressure retaining parts such as name plate, lift lugs, skirt and base plate are made form...
Hello all, after some weeks figuring out about the cause of this failure, it was determined that excess vibration during transportation started this failure, then when the equipment was in operation the additional loads acting on the pipe increase until it fail. I discovered as well that welding...
Dhengr, have you seen this type of crack on similar applications with this kind of supports? The suggestion stated by Littleinch is appropriate to fix this issue, my only concern is the cost of this repair, since as I mentioned before, those are a non code vessels and the customer is cheap on...
Good morning All,
dhengr,the vessels were hydro as you stated, and they started leaking 30 min after they have been in service, apparently the transportation and erection procedure were good, but really I don't have much information about that, only a few pictures similar to the first one. The...
Littleinch, thanks and thanks a lot for your suggestions, I will perform a FEA to figure out what are the critical points, and from them I will suggest the better and most economical solution.
if someone else have another idea, please share with me.
thanks to all
to clarify the picture showing the U bolt, this is not implemented yet as a repair procedure, the customer just come out with this idea as they did that type of brace for a firetube stack, we want to provide the better solution to be free of future issues and to provide a better design for...
Snorgy and Littleinch, as I mentioned before, I am agree in that this design is really poor, by the way this is a non code vessel. Littleinch I didn't understand exactly when you say:
"this support needs to have a collar welded to the pipe with circumferential welds and then the support welded...
good morning all, and thanks for your inputs...some answers to your questions and comments:
Marty007, there is not really a temperature difference or thermal expansion, the pipe has only one support at bottom close to the flange.
Metengr, I am agree with you as I mentioned it looks like due a...
Hello all, I have some equipment as shown in the pictures that have a pipe failure at the support attached.
This is a Vertical Recovery Tower 30" OD X 30' S/S operating at 50 PSI @ 100 F. According to the field foreman, the vessel started leaking 30 min after operation start.
my concerns about...
Hello all, i have some vertical separator vessels with a skirt support, those are code vessels, my question: is it required per ASME code add vent holes in the skirt? if so, how many and what are their typical size and location? what is the code reference paragraph that state this requirement...
thread507-37706
Hello Everybody after reading the reference thread i just want to figure out the meaning of 360 on the deflection parameter, where this number came from? it has any units? if my deflection calculations are in metric units i use the same value? what are the conditions to compare...
Hello everybody, i just want to know if there are some requirements per ASME code in the installation of nozzle repad, if not, what is the standard practice on 2-piece pad installation?
thanks guys, i am mechanical and i know the responsability of this kind of cals is from structural engineers, my question is just basic, assuming only wgt and wind load, i just want to create a basic spread sheet to have in hand, just for aproximation to the bolt qty and size, for the proposal...
i have various equipments mounted on a skid, i have the total wgt and wind load, this skid is anchor concreate bolted, what are the basic formulas to determine the bolt size and quantities, after some searching i found those calcs are besed on ACI 318-08, is there any free site to download this...
I have a vertical vessel which will be operating on a barge, this is a huge vessel (102" OD x 732" overall dims including the skirt), what is the movement impact on the vessel thks and what procedure or formulas i have to consider to add that extra load on thks calc?
Thanks.
Hello guys, after reading some post about this topic, I just wonder if every time we have an opening in skirt support, it is required to replace the area?, what is the calculation method?
Hello guys, I have a vert. heater treater vessel where the opening is an o-bround shape, vessel is 72" OD and the o-bround is 27"W x 48"H, to calculate if the reinforcement is required, as this is a large opening, probably i need to use appx 1-10, my question is how i treat the shape geometry...
