Plate heat exchangers – Issues related to electrochemical corrosion

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The media used in our plate heat exchangers are chloride-containing solutions and water, and corrosion has occurred in certain areas at the joints between the plates and the sealing rings (the spots where the gaps are narrowest). The chloride ion concentration is around 3000, the pH is around 6.5, and the material of the plates is 316L. For the time being, the material of the plate is not considered; metal plates and chloride-containing solutions (electrolytes) undergo electrochemical corrosion as well as chloride corrosion. Charging of the plates due to friction, combined with potential leakage from the pumps used, may exacerbate electrochemical corrosion. It is currently unknown whether the chloride-containing solution and water are grounded, nor is it known whether the plate exchanger is grounded. Considering grounding each plate of the plate heat exchanger can help eliminate the electrostatic charges on the plates and the fluid, thereby equalizing the potential between them; this is done to reduce the rate of electrochemical corrosion. I’m not sure if what I said is correct; I hope you can point it out.