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  1. JoeTank

    Design Code for Piping transporting Asphalt

    First of all, I am not a piping expert. My experience with asphalt tank projects indicates that B31.3 is typically used. But, I would sure like to hear that from others more knowledgeable. Joe Tank
  2. JoeTank

    NBIC Rules on Pressure test

    tc7, I probably came across a bit crude and coarse in my last email I did not mean to sound that way. My apologies. Like you, I too try to get my ducks in a row before I have to deal with an issue. Regarding afvice from an AI, I do not consider then as all-knowing or all-seeing folks. I...
  3. JoeTank

    NBIC Rules on Pressure test

    You need a copy of the applicable NBIC. Don't rely upon only the opinion of the AI. Nor should you rely upon only the info obtained from this forum. Go to the source of informantion... the NBIC Code. Joe Tank
  4. JoeTank

    ASME VIII front page

    Dunno. Joe Tank
  5. JoeTank

    Impact testing

    johnnick, It's pretty straight forward at this point. You exceed the temperature limits of UG-20(f) for operation down to -20F (-29C) with out impact testing. Have you reviewed UCS-66 yet? It may also provide a path for impact test exemption as you state that low temp operation is not...
  6. JoeTank

    Hydrostatic testing of tank with high s.g liquid

    The idea of a standpipe is just plain dangerous. In order to handle the excess pressure on the roof the shell-to-roof joint must be string enough and the tank must be anchored. So if you have a large tank, you will not be able to afford the total cost. This is an engineering issue that should...
  7. JoeTank

    Inverted cone roofs for API-650

    IFRs is right. API-650 does not recognize this type of roof, but it does not prohibit such a roof. You are on your own with regard to design procedures of the membrane roof and compression ring. Joe Tank
  8. JoeTank

    Need for API650/653 Certified Inspector / Expert

    Do a google search for tank industry consultants. There should be lots of hits as there are several firms that specilize in those services. Joe Tank
  9. JoeTank

    TANK FLOOR BOTTOM REPLACEMENT

    What is a temper pass? Joe Tank
  10. JoeTank

    Text for buckling analysis of pressure cylinders

    Here's a website that includes SP8009, SP8019 and SP8032. Scan the document lits to be sure i gave you right numbers. http://www.nakka-rocketry.net/sp8000.html Joe Tank
  11. JoeTank

    Material is SS but UT set calibrated off CS block

    metengr and JR97, Thanks for the feedback. That's pretty much what I had heard from less knowledgeable folks than y'all (2 to 4 percent error on high side for SS when using CS block). Joe Tank
  12. JoeTank

    Text for buckling analysis of pressure cylinders

    NASA freely publishes an old series of documents that dealt with buckling of cylinders, spheres and cones. They were numbered "SP-XXX". I used them many years ago, but found them on the internet a few years ago. These papers are based on the seminal references that most modern design codes...
  13. JoeTank

    Material is SS but UT set calibrated off CS block

    I've heard many times that SS welds require "special" considerations when inspecting by UT. My question now relates to thickness measurements. Is there much difference between UT thickness readings for CS and SS components when calibration is on a CS block. The components are typically tanks...
  14. JoeTank

    Hydrostatic Test in Tanks designed to API 650

    Bonswa, Now I disagree. Get a copy of the curent version of API-653 and read 3.20(a) and (b) regarding nozzle sizes that constitute a major repair/alteration that reequires a hydrotest. Joe Tank
  15. JoeTank

    Old rebar question

    It may mean that it is a "twisted" square rebar. Joe Tank
  16. JoeTank

    API Riveted Tank -- Repair of Horizontal and Vertical Seams

    First of all, API-653 reaaly doesn't cover much about riveted tanks, so you have to use engineering judgement about most things. For what you are trying to do, yes, I suspect you will have at least on third or more of it as a lap patch. I had similar problem and used a repaire plate that was...
  17. JoeTank

    API Riveted Tank -- Repair of Horizontal and Vertical Seams

    Why don't you share your issues and maybe you will get some good responses. Joe Tank
  18. JoeTank

    Brittle Failure of Vessels

    JOM, Steel does not "embrittle" at low temperatures. True it may have lower toughness, but that is a temperature dependednt problem. The steel's metallurgy is not permanently altered. When the steel warms back up, its just the same as it was previously to the cold temperature excursion. Joe Tank
  19. JoeTank

    Maximum Design Pressure for API 650 Tank

    400m3 is not a very large tank. Why are you wanting to go with a double wall tank? That is actually quite a rare thing in a field erected ASTs. Joe Tank
  20. JoeTank

    hydrostatic test of new 6,000,000 gallon fuel storage tanks

    6,000,000 gallons would be about a 170d x 40h tank or a 150d x 48h tank. Joe Tank

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