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What is driving the replacement of the shell sections? What product are you storing and tank size? As previously mentioned, some of the older codes published by API and NBIC are some areas to investigate. Might even look into 12C, a lot of good information there as well. Prior to any welded...

I have enjoyed this thread and all the reply's are very accurate. Make sure you are very familiar with all the applicable standards and regulations as well as client procedures (etc.) As far as the prevailing philosophy of hydro vs NDE, hope that helped. As far as AI's are concerned, we always...

I would prepare for hydrotesting, but due to the changes in Sec. VIII it may be 1.5 or 1.3 times the MAWP depending on the year of construction. The philosophy of hydro regardless on NDE is it "stresses the weld". No form of NDE provides that for you. Ultimately it is the inspectors choice.

Is the reason for your impact tests to determine the MDMT? Typically that grade of carbon steel can be used up to 426C, but can be subject to damages such as creep / graphitization /etc. Also you will have a noticeable depreciation in strength at elevated temperature. What service would this...

I would investigate the use of Incoloy 825 or maybe Inconel 625, also you may experience increased corrosion over 30 fps, so you are getting close. If you use a duplex material, you may want to look into API 938 - C and fabricate a mock-up for testing. I witnessed the after effects of an ARDS...

All very good advise and additional information should be added. Also be cautious of mechanical failure. The material you selected is subject to cracking due to excessive vibration or other means of mechanical stresses. Also look into thermal stresses and the requirements for "strength" welds vs...

ihs.com

There are a bunch of companies which provide these services check ilta.org. Are you looking for an RCI or construction management? Are you intending on re-using any of the material from the existing roof?

If you are in need to evaluate the stresses on the nozzle relative to your deformation in the shell, you may want to look into part 8 of API 579.

Yes you can provided the heater is existing and has been in service. We have utilized API 579 while evaluating and replacing some HK 40 supports in a Reformer furnace as well as for the stack evaluation. Highly recommend someone that has performed level II or III evaluations is involved.