To restart water washing, with your device, maybe let´s say, within 24 hours, is to improvise a paralel device, by doing hot tap, while waiting a better oportunity to shut down the unit.
Yeh! Amonium chloride is the strongest possibility, I don´t see a way to unplugg it on line. Water wash is normaly done in air cooler boxes sections trough 2 inch lines. I think you have to ponder a modification control in your CDU overhead wash water injection.
at your service conditions I think you can use a carbon steel hic resistent according to NACE Requirements
see the link below
https://masteel.co.uk/products/hic-steel/
At your working pressure I would go for elbows, instead of hot bending. Hot bending put some problems of ovalizing and extrition (loss of thickness) wich is bad for pigging services.
In addition to what Pierreick said, your security service must take appropriate measures to prevent potential accidents, in the vicinity of the unit subjected to blowing, with delimitation of the area and warnings of possible hazards.
Passivation is used in austenitic to create an homogeneous oxide layer to prevent air exposition corrosion. Soaping the surface of welds with nitric or citric acid creates a very thin layer of oxid and dissolves free iron from surface, wich seems to be benefecial for the SS.
In low points and if thermal insulation is not properly installed to avoid water and moisture ingress, as in API you mention the ppossibility of CUI can happens
1. Select oil-based or acrylic paints:
Acrylic Paints: Acrylic paints are adaptable, robust, and swiftly dry. They provide good rust resistance and stick to galvanized metal efficiently.
Oil-based Paints: Oil-based paints offer strong corrosion protection and are perfect for outdoor or...
If after four years, only the kerosene plate drain has been damaged, you should be proud of the operation of the atmosfheric column by your operators. These types of plate-damaging incidents occur during unit starts and stops, due to pockets of condensed water and their sudden expansion and...
On top of overhead CDU as pH increases toward the neutral region the concentration of bisulphide ion in solution increases. It has been demonstrated by several investigators that there is a sharp increase to the rate of corrosion in the region of pH 6.8 to 7.3. The sharp increase in corrosion...
You should complain immediately after receiving the pipes and not later.
If the work was started with the spiral welded pipes received, the fault, must be attributed to your reception services.
The drawing is ok, it is a typical standard termowell instalation, but in my opinion it has a dicutible statement.
"7-Flow may be in either direction but orientation is as shown"
I don´t see in the drawing any flow direction! And IMO this influences the erosion in thermo stems so the...
I have had two golf one gasoline one disel, but my first car was a DTSUN 100A long, long time ago! I will never forget it!
https://teslamotorsclub.com/tmc/threads/datsun-100a.310525/
