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              The various types of accident which are very difficult to predict 
              in advance are being occurred during the operation of cooling towers. 
              The case studies would be very helpful to protect the similar accidents 
              if the operators review the references for the accidents occurred 
              at the other site or in the past. DAC provides the trouble-shooting 
              and remedy method for the past accidents of cooling towers for protecting 
              the similar accidents. 
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