Fire authorities have removed all lithium-ion battery packs that were destroyed in the blaze at the Daejeon National Information Resources Service (NIRS) building. The National Forensic Service is set to receive the battery packs the next day and conduct a detailed examination.
According to fire authorities on the 27th, the Daejeon Fire Headquarters removed all 384 battery packs that were completely burned around 9:36 p.m. that day and is cooling them by submerging them in a mobile water tank. This is to guard against the possibility of additional thermal runaway. Earlier, after ventilating the smoke using blowers, the fire headquarters determined there was no risk of reignition and declared the fire fully extinguished around 6 p.m.
Accordingly, the Central Disaster and Safety Countermeasures Headquarters is expected to begin full-scale recovery work. The headquarters aims to restore the precision air conditioner and dehumidifier within the day and recover network equipment by the next day. If the work is completed as scheduled, 551 systems that had been suspended will resume operation in phases. The precision air conditioner and dehumidifier maintain a constant temperature and humidity in the computer room, but they broke down in the fire. Seeing a risk of data loss due to the failure of the precision air conditioner and dehumidifier, the NIRS shut down server power, halting operations of 647 government work systems.
So far, the Central Disaster and Safety Countermeasures Headquarters has identified one person with a first-degree burn as a minor injury. The fire broke out when 13 workers were replacing lithium batteries and a spark flew from one battery.