But why do warehouse fires get so big every time, and why the initial suppression is not working even though there is a ceiling sprinkler?
This is an experimental video assuming a fire in a three-tier shelf, which is often used in a distribution warehouse.
A fire that started from the chest on the lowest shelf begins to shoot upwards.
Before long, flames engulfed the entire shelf, and in less than three minutes, piles of crates collapsed.
The problem is that the high ceiling sprinklers and smoke detectors don't detect the fire below properly.
If the fire starts on the lower shelf, as shown in the experimental video, the sprinkler on the ceiling will most likely be activated after the fire has already grown.
The Coupang Logistics Center in Icheon, Gyeonggi-do, where the fire broke out this time, was also a warehouse with dense shelves.
However, the fire department said that sprinklers were installed only on the ceiling on the second basement floor where the fire broke out.
[Choi Ki-ok/Dr., Disaster Prevention Test Researcher, Fire Insurance Association: (below) When there is a fire, it takes a long time for the detector on the ceiling to detect it because there are items.]
Experts say that in order to put out the fire effectively in a shelf-type warehouse, each stage of the shelf is required. It points out that sprinklers should be installed on every
In fact, after installing a sprinkler on each stage, I tested it, and the fire was extinguished in 6 minutes.
[Choi Ki-ok/Dr., Disaster Prevention Test Researcher, Fire Insurance Association: Even if it is installed on each stage (of the shelf), it is neat, but if installed in the middle (ceiling), the fire cannot be put out.]
However, now, the height of the space where the shelf is installed is 10 meters high. There is an obligation to install sprinklers at regular intervals, such as on each stage of the shelf, only in case of abnormality.
This is the reason why there are voices calling for stronger accreditation regulations, including sprinklers, in order to prevent repeated warehouse fires every year.
(Video coverage: Oh Young-chun, Video editing: Lee So-young)