Dead leg corrosion Modification

Hi All,

Let me explain the situation.
Condensate line from inlet separator has got dead leg corrosion in a plant. The reason for corrosion is due to low production and hence no flow and caused dead leg corrosion.
Modification suggested is to connect the condensate line to water line from inlet separator.
Also suggested that the modification is a shot fix due to the fact that if production increases we need to go back to separate condensate and water line which is the original design.

My suggestion is why can’t we use a higher schedule pipe (currently they are using 150NB Sch 40 A106 Pipe ) and change the old pipe spools with new one. Advantages are we are not changing the original design, we can use old iso’s same pipe supports,no need to change booster pump logic etc .Design life is only 5 years and almost 3 years finished.

As per piping point of view which is a better solution?
Also as many have been in this situation before , can anyone give what their approach would have been while facing problem like this .Thank you.
DV

Hi Jop,

Can I sent some info through email as I cannot attach.Thanks.

Deepu