Stopping the corrosion that was eating a moulder's tooling

Not every water problem announces itself at boiler scale. At a Pretoria plastics moulding plant, a cooling circuit of roughly 2 m³/h was corroding the production moulds it existed to cool — and each damaged mould went out for polishing at around R3,000 a time. The water system was small; the cost it was driving was not.

The programme Prosep designed was matched to two things at once: the circuit itself, and the metallurgy of the moulds the water touched. That second half is the part a generic chemical drop-off misses — corrosion control only works when the inhibitor chemistry is chosen for the metal it is protecting. The circuit is fully operational and the corrosion problem is resolved.