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  1. kdgran

    Self-Supported Cone Roof

    You are correct that $24 will keep wine good in a small tank. Now multiply this small tank by 200 storage tanks that Gallo, Paso Robles, etc might have at one facility and may be filled/emptied a few dozen times per year depending on the wine type. Your $24 investment in now $60k. It's much...
  2. kdgran

    Self-Supported Cone Roof

    This style of head is very common in the wine industry for field fabricated tanks. Normal shop fabricated tanks have truncated heads. The wine industry fills to the top to eliminate any air in the tank. The more wine is exposed to the air increases the chance for contamination. As far as...
  3. kdgran

    API Tank Jacking

    I work for Mueller Field Operations and we normally fabricate tanks utilizing jacks. We have fabricated up to 1 million gallon tank. Normal application is to stop around a 40 ft diameter tank but we have gone up to 60 feet in the past. At stated by others, this method is preferred by use...
  4. kdgran

    Vertical shell joint 5t offset

    I spoke with a gentlemen on the API commitee and the section in question is S.4.11.3. This section was added on addendum 1 but left out of the latest addendum. This section lets users weld SS plates together in the shop and elliminate the offset requirement for the shop joints up to 1/2" thick.
  5. kdgran

    Vertical shell joint 5t offset

    Section 5.1.5.2 states an offset of 5t is required between adjacent shell courses. Does API allow this 5t offset requirement to be eliminated if the shell courses are shop welded. We fabicate many SS vessels. We will purchase 48" wide sheets and shop weld the sheets together to create a 96"...
  6. kdgran

    Dike Subdivision

    I am looking at a tank farm for a biodiesel facility and have a question about the impounding dike. 4.3.2.3.2(F) states a subdivision shall be provided for each tank greater than 100,000 or for a group of tank less than 150,000 gallons. What exactly is the definition of a "subdivision". Is it...
  7. kdgran

    Bottom Tank Connections

    That is basically what we have told them. They have this trough design in other tanks (non-stamped wine tanks). But this tank must be stamped because it has flammable luquid.
  8. kdgran

    1.2 limitations

    You are correct about the gasket actually sealing on the manway collar. And this isn't a oil tank, the customer will store brandy in this tank. And since brandy is a flammable liquid, they want a API stamped tank.
  9. kdgran

    1.2 limitations

    Customer would like to use a swing-in style manway and believes that 1.2.b justifies this manway because it is proprietary. This style of manway has a gasket on the inside of the tank, so the sealing point is actually at the shell wall. I believe 1.2 is for piping only and does not include...
  10. kdgran

    Bottom Tank Connections

    Group I have a customer that is wanting a cone bottom tank (sloping to center) built. Starting at the center of the tank will be a trough that will run all the way to the edge of the tank to an outlet. The customer is using 5.8.2 as the justification for being able to use a trough in the...
  11. kdgran

    API 650 Flush Type Shell Connections

    Has anyone installed any other types of flush outlet nozzles besides the style detailed in section 3.7.8. Paragraph 3.7.8.6 indicates that other options are allowed but I have not been able to find any other styles. The "standard" outlet looks to be very detailed and expensive.

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