Norsk Hydro’s Hydro Polymers unit will spend roughly USD110mn to convert its existing diaphragm chlorine plant in Rafnes, Norway, to membrane technology. Conversion work will begin immediately and is scheduled for completion during the second half of next year. When completed, the revamped plant will be identical to a new chlorine plant that is under construction in Rafnes and due to open later this year. The two projects will increase Hydro Polymers’ annual capacity to 260 000MT of chlorine and 280 000MT of caustic soda.