This is one of the world's largest chip manufacturing fabs and the issue was caused by a problem with a regional power transmission cable. Reuters writes the incident destroyed millions of dollars worth of chips:
Samsung, the world’s top memory chip maker, is inspecting the production lines for a restart, and the extent of the losses is under investigation, the company said in a statement on Wednesday.No major damage was done to chip production machines. Samsung expects the affected fab will be fully operational again within two to three days.
The incident likely caused millions of dollars in losses, a source with direct knowledge of the matter said, but added that there was no major damage. The source declined to be identified as the exact extent of the damage was not yet public.