Idemitsu Aichi CDU Shutdown | Market Impact Report

Idemitsu Kosan's CDU shuts for maintenance

Jun 17, 2026

Idemitsu Kosan has taken off-stream its crude distillation unit (CDU) at its Aichi refinery. A source in Japan informed a team member, “The company has halted operations at the CDU around September 16, 2025 for a maintenance turnaround. However, details regarding the duration of the shutdown remain undisclosed, and no official statement has been released by the concerned authority. Located at Aichi in Japan, the refinery has a processing capacity of 175,000 bpd.