High Chloride in Stormwater
High Chloride in Stormwater
(OP)
Hi,thought you might be of help.
Picture a 5km man-made island with extensive stormwater network.
At the moment, it is already operational. Open for public use.
Currently, we are facing High Chloride (40,000-70,000 ppm) in stormwater that is showing potential major corrosion problem on our pumping station.
We uses materials such as:
1. Stainless Steel 316L
2. Alloy 1.4122 (X39CrMo17-1) -15% Cromium. The same equivalent corrosion resistance with SS 316L. (as stated by Manufacturer)
We noticed Alloy 1.4122 easily corrodes heavily. While SS 316L already showing signs of corrosion especially on bolts.
We suggest to replace all materials in duplex (SS 904L).
Appreciate your inputs on this.
Thank you.
Picture a 5km man-made island with extensive stormwater network.
At the moment, it is already operational. Open for public use.
Currently, we are facing High Chloride (40,000-70,000 ppm) in stormwater that is showing potential major corrosion problem on our pumping station.
We uses materials such as:
1. Stainless Steel 316L
2. Alloy 1.4122 (X39CrMo17-1) -15% Cromium. The same equivalent corrosion resistance with SS 316L. (as stated by Manufacturer)
We noticed Alloy 1.4122 easily corrodes heavily. While SS 316L already showing signs of corrosion especially on bolts.
We suggest to replace all materials in duplex (SS 904L).
Appreciate your inputs on this.
Thank you.





RE: High Chloride in Stormwater
RE: High Chloride in Stormwater
Its a 215KW Pump and supplier confirmed duplex material used on pump material.
We are much worried on the ancillary pipes & mechanical screen chains.
I have attached actual photos to help you better understand the current scenario.
Thank you.
RE: High Chloride in Stormwater
NiDI 11 003 "Guidelines for Selection of Stainless Steels for Marine Environments, Natural Waters and Brines"
http://www.stainless-steel-world.net/pdf/11003.pdf
RE: High Chloride in Stormwater
Appreciate the help.