Updated 02/27/2023

Chilled water issues

A cooling water closed loop is installed in the production plant

The cooling water is used for cooling different parts of the equipment that is used in the plant.

There are two main parameters of the water: pH and conductivity. Both parameters are controlled and should be kept within certain limits.

Typically the pH of the water slightly decreases. This is compensated by adding a small amount of NaOH.

Suddenly pH started to reduce faster than usual. The compensation requested much more amount of NaOH which may result in a strong increase in the conductivity.

A regular audit showed that some flanges are affected by strong corrosion as shown below:

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Mark Reitman avatar
Mark Reitman

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