Molten urea tends to supercool when finely atomized. The first surface upon which the mist impinges will build up. You might first try using a larger nozzle. What process is used in the granulator (i.e. Spherodizer, falling curtain, ???). We have had good success in attaching a water spray...
Thanks for your reply. After studying 579, we have commisioned a consultant to do a non-linear FEA per Chapter 8 and B1. The results of this analysis should establish safe working levels.
What sections of the code address the exclusion of the cladding from the structural analysis?
Much depends upon the thickness of the coatings and the type of coating operation that is used. We have used rotating drums or inclined disk type devices to do similar work. However, the amount of coating required is substantial. The action of the rolling bed action tends to "round" the ends...
Thanks to all for the responses. I purchased a copy of
API 579 -- chapter 8 offers a complex maze of analysis methods that appear to lead to a non-linear elastic/plastic numerical model as the only method for analyzing this situation. Does anyone know of a good consultant who is familiar with...
We have a storage tank (600000 gal capacity) that has been overstressed due to freezing and expansion of the contents. The original diameter is 60'. The lower shell course has swelled to 60'-10" diameter. The tank was built in the 50's, and drawings indicate it was designed and constructed to...
You probably have two or three issues that are working together to cause the problem.
1. The steel mold tends to act as a wedge between two opposing tires. If you write the statics equations for this situation, you will find that the vertical component of the load is transmitted to the tire...
Mechanical brushing may be an option. Automation of the process may be possible depending upon the grid structure.
A number of years back, we were involved in the process design for coating of an early generation of the metallic substrate. However, the process resulted in some coating being...
We have been asked to provide steel beams imbedded in a concrete floor. It is our understanding that rails will be installed on the beams. Automated die spotting carts will run on the rails. The specified slope tolerance for the beams is 0.006" per foot.
The available mill tolerance on...
We have been asked to provide steel beams imbedded in a concrete floor. It is our understanding that rails will be installed on the beams. Automated die spotting carts will run on the rails. The specified slope tolerance for the beams is 0.006" per foot.
The available mill tolerance on...
insert the following formula in column D
=IF(AND(B1=2006,RIGHT(A1,1)="F"),C1,0) and copy to the bottom of your range. Sum this column and you get your answer.
We constructed a 70000 square foot metal fabrication plant a few years back for a customer. It is fully sprinkled, with a design density of 0.35 gpm/sf. The eave height is about 55 feet. The building houses large metal stamping presses. The customer originally stored both finished and...
I have a curve for a 150 hp pump that predicts 2880 cfm capacity with 90 deg F inlet gas temp and 70 deg F seal water. The capacity is very much dependent upon seal water temp (due to the vapor pressure of the seal water).
Good luck.
I am looking for a Microsoft Visio stencil that expands the P&ID symbols that comes with the software. Does anyone have a lead on something similar to this? If not, what software packages do you use for constructing P&ID's?
This response may be a little too late. We have found that an additive called Correchem improves concretes resistance to nitrate attack. It is marketed in the US by Norchem (www.norchem.com). If you want additional information, just ask.
What happens if the owner modifys the floor in the future by cutting out a section of the slab? This occurs frequently in factories when new equipment is installed.
