On Site Investigation - In order to make the right decision for future modifications, our conceptual engineering study usually starts off with an on site investigation. We analyze the performance of the present emission control system. Measuring gas flow rates, gas temperature and static pressure in different locations of the system. We will also study various process status, such as charging and furnace melting.

Furnace Operating Practice - will be discussed and jointly determined to be the basis for the future concept of the emission control system. Bender will work with clients to arrive at a desired production level for the EAF. The EAF operating practice will be used with Bender's in-house computer programs to establish the expected rate of heat release to the EAF's Direct Evacuation Control (DEC) system. The DEC system requirements will be balanced against Secondary Emission Control and Ventilation criteria in order to arrive at the necessary flow conditions. The time of the heat cycle with the highest demand on the emission control system (worst case) will be determined and will be the basis for the design of the future emission control system.

Results of the Conceptual Design - will be presented on a comprehensive process flow diagram (PFD). The process flow diagram will show the future arrangement of the emission control system. The PFD could best be described as the bible of the emission control system. It forms an easy to follow reference document for operators and enironmental authorities alike. An isometric (3-D) version is available as an option. (example)