On / off operation

Considered a process steam consumption operating under on/off conditions. During normal operation (on) presents a corrosion rate of 2 mpy and produces dissolved iron as corrosion result of 0.05 ppm.

If operation turns to off, steam is condenced, pressure drops, and oxygen enters to the system as to brake the void.

Corrosion rate increases extremelly, and when system turns again to on extremelly high iron return is noticed.

During the off operation the deterioration of the system is very fast.

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