"Stray current" or warehouse fire with 3 deaths Welding workers sent documents November 25, 17:58
The Tokyo Metropolitan Police Department sent out a document inspection of a worker who was welding a pipe on the suspicion of negligence on the job due to the fire that killed three contractors in a logistics warehouse in Ota-ku, Tokyo.
This is because the welding equipment was not installed correctly, causing a stray current that flows to an unexpected location, and heat is transmitted to the insulation on the warehouse wall, causing a fire.
In February, a fire broke out in the warehouse of “Maruha Nichiro Logistics”, a subsidiary of a major food company in Ota-ku, Tokyo, and three of the traders who went in and out died due to loading and construction.
The Tokyo Metropolitan Police Department investigated whether there was a problem with safety management, and as a result of the pipe welding work that was done on the roof, the welding equipment was not installed correctly, so heat was transmitted to the insulation on the warehouse wall and a fire was suspected. It means that there is.
According to the Tokyo Metropolitan Police Department, in order to pass the current of the welding equipment to the correct place, it was originally necessary to pass a metal rod called `` crossover '' between the pipes. It means that a “stray current” has occurred that flows to the place where it does not.
And the heat of the current is transmitted to the wall of the warehouse about 20 meters away from the welding site, and it seems that the heat is emitted from the insulation.
The Metropolitan Police Department sent a 64-year-old worker who had been working on the document to suspect that he was negligently fatal.
The worker had over 40 years of experience as a welder, but explained to the survey that "I may have forgotten to install a 'crossover'".
Expert "Stray current, this time the tip of the iceberg"
Masaaki Kato, a member of the Central Labor Accident Prevention Association, who is familiar with piping welding work, said that “the stray current”, which seems to be the cause of this fire, is “raising to a fire is rare, but I have not noticed the previous case. It ’s just the tip of the iceberg this time. ”
Also, in this fire, it seems that the heat of the current was transmitted to the wall of the warehouse away from the roof where welding was performed, and it was thought that people on other floors were hard to notice, “There seems to be a person who noticed for the first time after the fire started to burn. It was necessary to inform the contractors to the fact that they were under construction and to share their awareness of the crisis.”
Bereaved "If you run away ..."
The wife of the man who died in this fire was told by the Metropolitan Police Department about the situation at the time, “When I caught fire, I heard that the fire was involved in the fire during the initial fire fighting on the 5th floor of the top floor. “I think it ’s hard to start the fire because it ’s a person with a strong sense of justice, but I ’d have to think that I should have escaped.”
On top of that, “I often didn't feel that my husband had died because my husband wasn't at home on a long business trip. I hope you don't want me to do it. "