A hydrogen sulfide leak at HD Hyundai Oilbank’s Daesan refinery in Seosan, South Chungcheong Province, exposed 20 workers on February 27 at 9:45 p.m., resulting in two fatalities.
Incident Overview
Emergency responders rushed to the scene after reports of the gas release from the plant’s western hydrogen sulfide facility. Two adult male workers suffered critical injuries and were transported to hospitals in Dangjin and Cheongju. Upon arrival, both showed no vital signs.
Hazard Details
Hydrogen sulfide, a colorless gas with a strong rotten egg odor, poses severe risks even in low concentrations. Inhalation can lead to rapid fatality due to its toxic properties.
Cause and Safety Measures
Investigators point to a burst exposed pipe during maintenance work as the source of the leak. The plant safely vented the gas through a flare stack, preventing any external fire or further spread.
Authorities are reviewing safety protocols at the facility and extending condolences to the affected families while conducting a full probe into the accident.
