<Anchor> The

police concluded that the fire at Hanik Express Logistics Warehouse in Icheon, Gyeonggi-do, which killed 38 people, was a disaster caused by human error. The police said that while working on oxygen welding on the second basement floor, the ceiling wall lit up and spread throughout the building.

First, I'm Ahn Hee-jae.

<Reporter> The

police announced the results of the investigation on the 48th day of the tragedy.

It was that during the welding of the indoor air pipe, which is a cold air device from a 8.8m high ceiling, the fire started because a fire battered or radiated heat was transmitted to the ceiling with urethane foam.

It was said that the flame spread along the ceiling in the form of so-called'salt-free combustion', which initially did not smoke, and met with oxygen near the entrance, explosively burning, leading to the disaster.


[Semi-water/Icheon Fire Incident Headquarters: (below the estimated point of ignition) Welding torch, welding rod, etc. were found, and it was confirmed that the oxygen and LP gas container valves were open… ] The

police explained that the flames and black smoke that covered the second basement floor quickly spread to the roof of the building.

Indeed, the remains of the flames were burned up on the pillars and walls of the site.

In fact, the police officers reported that the workers on the second floor of the basement were caught in flames after 30 seconds of running out after seeing the fireworks.

[Insejin / Woosong University, Department of Fire Safety, Professor: (Aisle, stairs) is a chimney. You drilled vertically. Smoke diffusion is several times faster than horizontal. It is very likely that it will spread upstairs.] The

police concluded tentatively that the explosion of vapors or ignitions caused by cigarettes that were raised immediately after the accident were unlikely, given the movement of the flames and the journal.

(Video coverage: Hong Jong-soo, video editing: Park Jin-hoon, CG: Seo Seung-hyun) 

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