Also known as:
Complexity: 16.5
Atmospheric distillation - 65 kbpd
Reformer - Semiregen unit
1955 - Refinery commissioned by Toa Oil with 6 kbpd capacity
1969 - Capacity reaches 100 kbpd
1977 - Flexicoker commissioned
1979 - Showa Sekiyu acquires partial interest in Toa Oil
1987 - FCC commissioned
2000 - Refinery integrated with Show Shell Kawasaki refinery (Ogimachi plant)
2005 - Toa Oil fully acquired by Showa Shell
2011 - Ogimachi plant shut down
2016 - Acquisition of most of Shell's interest in Showa Shell by Idemitsu
2019 - Integration into Idemitsu refinery system