The four proposals are all based on technology licensed by the UK’s Stone & Webster. The bidders are: Petrochemical Industries Design & Engineering Company (PIDEC); Namvaran; Bina; and Chagalesh. The winner is expected to be announced in October. The project will be carried out on an engineering, procurement and construction (EPC) basis.

The plant will have capacity of 450,000 tonnes a year (t/y), a significant increase over the original plans for a 310,000-t/y unit. The client, National Petrochemical Company, decided to boost the unit’s proposed output to meet increased ethylene demand in western Iran. The polyethylene plants now under development by Bakhtar Petrochemical Company in the west will be fed by a pipeline from Bandar Imam and Assaluyeh, instead of using locally produced ethylene.