(EnergyAsia, April 20) — French engineering group Technip has signed a letter of intent with Qatar Petroleum, ChevronPhillips Chemical Company LLC, Qatar Petrochemical Company and Total Petrochemicals to execute an engineering, procurement and construction (EPC) contract worth more than US$800 million for an ethylene cracker at Ras Laffan in Qatar. The 1.3 million tonnes/annum plant…