A fire broke out just before 3am on Saturday, September 12, inside the hot-rolling mill at Nakayama Steel Works' Funamachi plant in Osaka's Taisho ward, and was put out within half an hour. The blaze partially burned the power cables feeding the mill's reheating furnace equipment. No one was injured.
The company has stopped operating the hot-rolling mill while it assesses the damage, but says the processing lines that sit downstream of it are running normally. That split matters for anyone tracking the plant's output: the halt is confined to the rolling stage rather than the whole site.
On repairs, Nakayama Steel says it has largely lined up replacement cables, but checking the condition of the reheating furnace equipment itself will take longer. The company has not given a restart date, has not quantified physical damage beyond the cable burn, and says the cause of the fire is still under investigation. It has committed to promptly disclosing the restoration outlook or any other matter requiring disclosure once known, or any material impact on earnings should one emerge.
For now, the disclosure leaves two open questions: how long the furnace inspection takes, and whether the mill's downtime shows up in the company's results. Neither is answered in this filing.