I have a potential application for solar concentrating power. It involves an intermitten use for the steam produced. However I am not knowledgable enough about the details to determine the feasibility of the project. I am looking for someone to talk to. Can anyone point me in the right direction.
Does anyone have any experience or knowledge of tank jacking in the USA. In my research so far, I've found companies who build tanks by starting with the top and jacking it up, placing the next shell ring under the top, jacking all that up, then the next lower ring and so on till they do the...
I have to temporarily support the top of tank against wind buckling while we replace the roof. The tank is 220' dia and about 40' tall. I am trying to stay away from putting up a traditional windgirder b/c of cost and time. I'm thinking about modifying my tank scaffolding to act as a truss in...
I've been trying to model wind effects on an API 650 above ground storage tank. The model is simple enough and runs fine, however the results I'm getting are way off the mark. Has someone done this successfully before?
I've got modeled a 60' diameter x 60' tall open top tank. I've got the...
What's your advice?
I have a 100,000#/hr blr. operating at 225psi saturated. I am considering adding a superheater at 500 F. I am trying to calculate an expected horsepower increase by doing this.
I do know efficiency will come into play at some point.
I am thinking that I should use 2nd Law...
How does an Engineer best serve his company? I ask this in terms of possible career paths an engineer may take in one company. In this particular situation there is only one real engineer and several construction project managers, drafts people, and estimators. The engineer is young with only...
I have a case where I have several boilers at 430(psi) @ 550(deg F) feeding into a high pressure header. I also have a few boilers at 275(psi) feeding into a low pressure header that feeds the factory equipment. I am considering joining the two headers having an expansion valve between the two...
I am charged with designing support lugs for an ASME vessel for about 50,000 cycles of filling. This subject is not one I have any professional practice with but would like to learn. For this case, what would be the best route to take: is there a reference book that may help or would it be...
I have come across some calculations for a floating roof recently and noticed that when analyzing/designing the pontoons the engineer used the Moment of Inertia of the Pontoon cross section when looking at the Pontoon bending. I found that the moment of inertia was calculated normally for a...
I am looking to get some confirmation on the calculation for (Nh - the Product hydrostatic membrane force) in API 650 App. E
I think it is the head pressure at the elevation in question divided by the thickness at that elevation.
(Head Press/shell thk.)
My second guess is that it could be...
I am looking at the newest version of App. E, Seismic Design and found that the definition of "Y" is not clear to me. The given definition states "Distance from liquid surface to analysis point". What is the analysis point?
Thanks,
Hi,
I am considering purchasing the book Fudamentals of Structural Stability with the intent of enhancing my understanding of structural systems. A couple areas in particular that I would like to understand better are: beam & column structures (building frames), and floating roofs in API Tanks...
I've been asked to look into the addendum 4 and help find and understand the changes from the previous version. I would like somebody to confirm my understanding of the Moment terms as defined in Section 3.11.2 Unanchored Tanks. This is what I think:
Mpi = Moment about th shell to bottom joint...
I've recently been approached about the design of an inlet diffuser for a 230ft dia. tank. I've never delt with this before and immediatly told the person that, but I want to know more. Conceptually I understand what a diffuser is supposed to do. What are the design considerations for such an...
I am looking for a consultant who can analyze a dilute phase conveying process we have developed. Any suggestions?
I am in Louisiana but travel can be arranged.
Thanks
I have been charged with sizing the overflow nozzle for a large diameter storage tank. I've been given an input flowrate of 3,000gpm. Of course I need to make sure that my overflow nozzle is of adequate size. I think that as long as my outflow cross sectional area is equal to or greater than the...
I am trying to determine the stress induced by external attachments on large diameter tanks. In this case I have a 60' dia. x 30' tall tank. The shell plate at the elevation of interest is 3/16" thk. I need to attach a knee brace that will support a catwalk. How can I determine at what point do...
We have been using the guidlines in the API 650 Code for designing our windgirders. However we want to use a shape and size a little different than what is in the code book. Before we do that we want to be sure we are using the correct method for calculating the section modulous. Currently we...
I am trying to design a simple support structure involving one column and a horizontal member at the center elevation of the column to keep it from buckling. The other end fo the horizontal member is tied into an existing structure, its end will be considered fixed. What I can't figure out is...
