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Pressure Vessel: Div. 2 replacement by a Div. 1 Vessel

Pressure Vessel: Div. 2 replacement by a Div. 1 Vessel

Pressure Vessel: Div. 2 replacement by a Div. 1 Vessel

(OP)
Hello:

From reading the discussion board, this seems to be a great place to learn more and have questions answered.  I look forward to interacting with all of you!

Now my question...:)

I am in the process of replacing a Div. 2 Vessel with a Div. 1 Vessel.  Has anyone done this?  If so, any idea on the cost it would take to accomplish this task?

Thanks in adavance!

Chalo

RE: Pressure Vessel: Div. 2 replacement by a Div. 1 Vessel

If you have not done so already, you should review ASME Section VIII, Div 2 Article G-1, paragraph AG-100 (2)d thru e.

RE: Pressure Vessel: Div. 2 replacement by a Div. 1 Vessel


  The decision is a tecnico economical mater.

For small vessels  the steel savings that you can get when selecting the Div 2, do nor pay the 100% radiography and the additional engineering cost.But in a bigger vessel loke  400 m3, you can save nearltyy 30 % of the steel and can be wortwhile.

RE: Pressure Vessel: Div. 2 replacement by a Div. 1 Vessel

Team Members

ASME SECTION VIII, DIVISION 2, is in rewriten using CODE

CASE 2268-1 Jaunary 1, 2004,
Aleenative Ruel for Determining Allowable Ecternal Pressure and Compressive Stresses for Cylinders, Cones, Spheres, and Formed Heads Section VIIi, Division 1 and 2.

RE: Pressure Vessel: Div. 2 replacement by a Div. 1 Vessel

Huh?

RE: Pressure Vessel: Div. 2 replacement by a Div. 1 Vessel

SPLIT:
The 30% saving in steel cost is history. The safety factor of Div.1 allowable stress was reduced from 4 to 3.5 in the year of 1999. Compared to S.F. of 3 of Div.2, the difference is only about 15%.

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