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Hi All, If the tank bottom plate is 6mm and the annular bottom plate required also 6mm (as per table 5.1). In this case is it ok not to have the separate annular plate instead just extend the bottom plate to project 50mm outside the wall? which means wall just stit on the bottom plate. much...

Thanks

I am in the process of designing a 15.5 mitr dia 15.8 dia steel tank with conical roof. I am bit stuck on the roof design and much appreciated some one could help me with this. 1) I am not clear either to go for self supporting or cone with rafter suppoerted from the tank wall, as i could not...

Base Plate is a solid 50mm thick plate with no opening and it got a shear key as per the attached. http://files.engineering.com/getfile.aspx?folder=9ae7627c-86b7-4d37-8fa7-da1a9ea261cf&file=base_plate.docx

Bolts are for overturning moment caused by seismic and wind loads, which is estimated at 2600KNm. Attached is the photo of a full tank with its supporting arrangement. no bend in the pipe noted. http://files.engineering.com/getfile.aspx?folder=dff680bc-421f-4125-9c43-f0d15e277efc&file=IMG_2895.JPG

Bolts were incorrectly casted in the first place and for the alignment of the columns the holes had to be slotted. I do not see, by visual any fracture on the bolts and also checked with a "hammer sound". Surprisingly one bolt stand upright as it was without any any bent. Construction drawing...

Hi Attached is the photo of the column with buckled anchor bolts. Column is a circular pedestal with 50mm thick base plate x diameter around 1125mm it got 28 off 30mm anchor bolts No grout under the base plate, column was supported on leveling nuts It is a thickener tank, it happened during...

During construction,I have come across to an event that the anchor bolts supporting the central column buckled during erection of an elevated tank. I would like to calculate if that buckling is within the acceptable limit. Any help would be much appreciated.

Thanks Mike you are absolutely right. We have improved the results by addition around 10% of engine oil on the diesel.

Hi All, I am doing pickling and flushing of fuel line to gensets (diesel and heavy fuel oil). Attached are the photographs taken after each stage. The pipes were clean and free from rust after pickling. Flusing is done with diesel and I am getting a brownie sludge type thing in the pipe after...

Hi Chicopee, I am not sure as the tank was holding water for more than two months (not in full capacity) ie the tank was filled gradually over six weeks due to water scarcity and pump issues. however no sign of leak or any decrease in water levels in the tank....at the same time your and...

more attachmentshttp://files.engineering.com/getfile.aspx?folder=d655aad0-c6c3-4961-b403-09ee1fa7a9a6&file=tank_foundation.pdf

more attachmentshttp://files.engineering.com/getfile.aspx?folder=e5e0fbec-0584-4969-8895-268b80706778&file=tank_floor.docx

We will be using the vacuum box testing method to determine the location of the leak. Foundation were done by another contractor and attached is the arrangement also the photograph showing the leakage. I am not sure but I think with this arrangement if the tank got the leak during the hydro test...

Hi All, We have recently constructed a 19mtr dia x 9 mtr high storage tank for the storage of heavy fuel oil with specific gravity of 0.985. It has a lap joint floor. The tank was hydrotested and water was there in the tank for morethan 2 months. When we started filling the tank with hfo the...

Hi All, I have come up some misalignment of 300NB pipe in field erection (as per the attachment). This is heavy fuel oil line and has straight and 7000m radius bends. It looks like the bends are not perfectly circular and I am getting the misalignment as indicated in the attachment. Is there...

Hi All, Can some one one clarify the issue indicated on the attached sketch? Question is.... Say one floor plate (say plate 3) is at botom and on the edge it lap welded to plate 2 and 1 on top. on the joint of plate 2 and 1 (say plate 1 is between plate 2 and 3), does we need to weld plate 1...

Thanks Gcrobert. Can you please give me some guide line on establishing fill and discharge rates?

Could any one please advise me the guideline as per API650 for the hydro test of above ground storage tanks.

How to calculate the pressure drop in a pressure vessel, when the following variables are known Flow rate, density or SG, Pressure, viscosity, Vessel ID, Inlet nozzle I.D Thanks for your time