The quality of steel depends on the solidification process during Secondary Cooling. The cooling water is to be controlled to avoid : Under and/or uneven cooling = bulging / breakout Over cooling = surface crack An improper cooling would result in weak spot, visible cracks on billets and uneven surface. To avoid the above, Secondary Water Automation System is introduced so that proper cooling of billets as well as machine rolls can be done by controlling the quantity, pressure & flow rate of cooling water through PLC with respect to other casing parameters, which results: Increase of Operational Flexibility Increase of Steel Quality Increase of Maintenance Flexibility