Also known as: Seibu Oil refinery
Yamaguchi was cracking/asphalt refinery in Japan.
The refinery was owned by Idemitsu.
Idemitsu shut down the plant in March 2024.
Complexity: 11.5
Atmospheric distillation - 120 kbpd
Reformer - Semiregen unit Continuous (CCR) unit
1969 - Refinery commissioned by Seibu Oil subsidiary of Showa Shell
1986 - FCC commissioned
1989 - Isomerization unit commissioned
2004 - Hydrofiner commissioned
2009 - CCR commissioned
2016 - Acquisition of most of Shell's interest in Showa Shell by Idemitsu
2019 - Integration into Idemitsu refinery system
2024 - Refinery operations will be shut down