OpenLegislation

Division 88

United Kingdom

Original text. Later amendments are not shown.

BAT for the electric arc furnace (EAF) primary and secondary dedusting (including scrap preheating, charging, melting, tapping, ladle furnace and secondary metallurgy) is to achieve an efficient extraction of all emission sources by using one of the techniques listed below and to use subsequent dedusting by means of a bag filter:

  1. I..

    a combination of direct off-gas extraction (4th or 2nd hole) and hood systems

  2. II..

    direct gas extraction and doghouse systems

  3. III..

    direct gas extraction and total building evacuation (low-capacity electric arc furnaces (EAF) may not require direct gas extraction to achieve the same extraction efficiency).

The overall average collection efficiency associated with BAT is > 98 %.

The BAT-associated emission level for dust is < 5 mg/Nm3, determined as a daily mean value.

The BAT-associated emission level for mercury is < 0,05 mg/Nm3, determined as the average over the sampling period (discontinuous measurement, spot samples for at least four hours).