Whenever there is bidding for new project, I always see customers restrict the using of pressure part (especially stainless steel) origin from China to build pressure vessels.
This restriction is still remaining like 10+ years as far as I've been in this field.
I am wondering that these days...
Lately, the customer asked to my boss if thickness check annually is required or not?
For pressure vessels that are construced by following ASME Sec8 Div1 in general.
I never heard of this requirement in the book before. Mostly, it comes from an additional requirement of each customer...
My client has inquiry about a dome roof, flat bottom tank with internal pressure of 340kpa.
The size is gigantic Dia=8m H=5m. (Their existing tank only ATM)
I don't think it's practical from my experiences. If I go for Sec VIII Div.1, the thickness will be skyrocket.
Is there any book that...
What condition to decide where to weld spiral baffle (the thin plate to force direction of flow inside the gap between main shell and jacket) to outside of main shell side or to inside of jacket shell side?
I cannot find any book to support this. I saw some existing vessels in the same plant...
The reason is
1. The gasket at shell flange is broken and there is some vapor leakage when the media inside was heated.
2. It takes a long time to disconnect all piping and agitator on top of the vessel in order to replace a new gasket.
So my client would like to seal the gap between shell...
This pad flange should be fabricated as per JIS10K 450A dimension. It is used for connecting with agitator motor.
But I just found that bolt holes quantity is not correct (16 holes instead of 20 holes) :(
Now the only repair procedure to come up with is by plug welding all hole follow AWS D1.1...
Vessel info :
-Design as per ASME Sec.VIII Div.1
-SS304
-Shell 12mm ; 3500mm TL-TL; ID2500mm
-Ellip Head 12mm
-Vertical
-D.P. @6Bar/FV ; Test P. @7.8Bar
Sight glass base frame is designed following sight glass vendor's catalog by using model that can retain pressure to 10Bar.
And I also...
