During the contract, required engineering services including modification and reconfiguration, software troubleshooting, changes in graphical displays, removing grounding problems, regular and periodic inspections, complete training courses on engineering and operation were fulfilled by Paya Control Afzar’s experienced experts. At the beginning, the control system had a poor and unreliable performance creating numerous problems for operators in terms of process control and monitoring. These problems were gradually solved during the project and different parts of the system like operator stations, controllers, highway, engineering computer etc. were restored to reliable conditions one after the other.