FILE PHOTO: Liquefied natural gas (LNG) storage tanks and a membrane-type tanker are seen at Tokyo Electric Power Co.'s Futtsu Thermal Power Station in Futtsu, east of Tokyo, Japan, February 20, 2013. REUTERS/Issei Kato TOKYO : Japanese refiners are dusting off unused supply chains for fuel oil and getting coastal vessels and storage tanks ready after receiving requests from electric utilities to supply more fuel oil this winter amid a global crunch for power generation fuels.