Gas Fournaces CE Marking

Gas Furnaces - CE Marking

Safety of the Electric Arc Furnace (EAF)

Since many years we support the manufacturers of Industrial Gas Furnaces for the Risk Analysis of their new products.
We participate to the Technical Committee 221 liased, with CEN, that is responsible for the next issue of the EN 746 standards. 

Insights
Gas Train
Safety of the Electric Arc Furnace (EAF)
The Gas Train is a part of a combustion system, featuring the components that carry the fuel from the network (or from the tank) to the burner. A gas train can feed one or more burners. The designer must consider the Standard EN 746-2. This Standard states the requisites that guarantee the safety of people and equipment and the correct functioning of the system. It also indicates which safety devices should be used.
The electric arc furnace operates as a batch melting process producing batches of molten steel known "heats". The electric arc furnace operating cycle is called the tap-to-tap cycle and is made up of the following operations: Furnace charging Melting Refining De-slagging Tapping Furnace turn-around Modern operations aim for a tap-to-tap time of less than 60 minutes. Some twin shell furnace operations are achieving tap-to-tap times of 35 to 40 minutes. The safety of the Electric Arc Furneces is under the Machinery Directive and among the main Harmonised Technical Norms we can mention: EN 14681 and EN 60204-11 The former however does not give enough direction how to handle, safely, the access to the Furnace during Operation and Maintenance, considering the fact, it often happens, that multiple teams operate at the same time around the Furnace. We therefore advise follow the EN 12100 as well as several B-Type norms. GT Engineering has done a few Risk analysis of Electric Arc