Four underground parking garage workers killed in accident; device activated after touching sensor on ceiling
TOKYO – In an accident where a fire extinguishing system was activated in the underground parking lot of a condominium in Shinjuku Ward, Tokyo, killing four workers, it was learned that the system may have been activated by touching the sensor of the fire extinguishing system on the ceiling while the ceiling was being replaced.
On the 15th, a fire extinguishing system was activated in the underground parking lot of a condominium in Shinjuku Ward, and carbon dioxide filled the air, killing four male workers and leaving one in critical condition.
The ceiling of the underground parking lot was being replaced at the time, and it was found that the fire extinguishing system’s sensor on the ceiling was touched during the work, possibly causing carbon dioxide to spew out from a vent in the wall. A man who evacuated the parking lot on his own said that he saw some of the parts of the sensor being removed during the operation.
During the on-site inspection on the 16th, some of the sensor parts were removed, and the Metropolitan Police Department is investigating the cause of the accident in detail.
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