Investigations were conducted to assess condition and determine root cause of the ongoing concrete
deterioration of the cooling tower. The beams, columns, wall panels of end walls, roof slab, bund wall,
and louvers, were visually exhibiting severe concrete deterioration in many areas across the entire
structure. In some areas, the concrete deterioration was very advanced and posing serious threat to
integrity of the structure. Chloride had penetrated to full depth of the concrete cover in concentrations
significantly higher than threshold level. Electrochemical measurements showed that the reinforcing
steel was actively corroding under the sound concrete in >50% areas of the entire structure.