SK Hynix evacuated 3,600 workers from its chip plant in South Korea on Tuesday after a fire triggered a toxic gas leak, underscoring the fragility of the global AI chip supply chain. The incident at the company's facility in Icheon, about 80 kilometers southeast of Seoul, did not immediately result in reported casualties, but it forced a full-site shutdown and sent emergency crews scrambling to contain the leak.
How the incident unfolded
The fire broke out in a chemical storage area within the plant around 11:30 a.m. local time, according to company statements and local fire department reports. Thick smoke billowed from the building as workers were rushed out. Within an hour, authorities confirmed a release of toxic gases, though they did not specify which chemicals were involved. SK Hynix said all 3,600 employees on site were accounted for and no injuries had been reported. Firefighters extinguished the blaze by early afternoon, but cleanup and air-monitoring efforts continued into the evening.
Why the supply-chain risk matters
SK Hynix is one of the world's two dominant producers of high-bandwidth memory (HBM) chips, a critical component for Nvidia's AI accelerators and other advanced computing systems. Any extended production halt could ripple through the AI hardware pipeline, already strained by surging demand. The plant in Icheon manufactures both DRAM and NAND flash memory, but the company has not yet said how much capacity was affected or when normal operations would resume. Industry analysts have repeatedly warned that concentrated chip production in South Korea and Taiwan — both in geopolitically sensitive zones — leaves the AI supply chain exposed to single-point failures. Tuesday's event is the latest in a string of industrial accidents at semiconductor fabs across the region.
What happens next
South Korean regulators and local investigators are expected to inspect the site Wednesday to determine the fire's cause and assess any environmental damage. SK Hynix said it would cooperate fully and will release a production impact statement once the damage is quantified. The company's stock fell 2.3% in Seoul trading Tuesday after the news broke. For customers relying on its HBM chips — including Nvidia, Google, and AMD — the immediate question is whether the shutdown will delay deliveries scheduled for the coming weeks.
