The iron gate at the parking exit of the Yau Ma Tei Maternal and Child Health Center collapsed the day before yesterday (15th), hitting a 43-year-old female security guard surnamed Wei and was sent to the hospital for rescue.
Lu Jueqiang, academician of the British Institution of Mechanical Engineers, said today (17th) that there is a pipe groove on the top of the electric switch to fix the tail of the switch, so that the tail of the switch will not collapse.
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In an interview with RTHK's Millennium Times, Lu Jue-keung pointed out that there is generally a pipe groove on the top of the electric brake. When the electric switch is turned on, the pipe groove will fix the tail of the electric switch, so that the electric switch does not "walk through the dragon" and collapse.
He analyzed that the accident may be related to maintenance. When the pipe groove sensor fails and cannot detect the tail of the switch, it will go off track.
Collapse is only 0.5 seconds superhuman reaction time
Lu Jueqiang also pointed out that the electric switch involved weighed about 500 to 600 kilograms. When it collapsed, it hit the head with a force of about 300 pounds. If it falls down again, there will be thousands of pounds of force. The gravity will cause serious fractures and serious injuries. Refers to: "The fall should be 0.5 to 0.7 seconds to fall, but the normal reaction time is only 0.9 seconds, and it is impossible to shrink."
He suggested that users should use the remote control to operate the switch and stand at a distance of 4 to 5 meters.
Lu Jueqiang, academician of the British Institution of Mechanical Engineers.
(file picture)
Unions advise government to push for mandatory major repairs
Siu Qianwen, director-general of the Industrial Casualty Rights Association, said that a similar accident occurred in Santian shopping mall three years ago. A manual metal door fell off the track. She pointed out that the security industry needs security guards to control the switch. Although the remote control operation is not difficult, it is not clear at present. The guidelines make the awareness of safety and crisis lower, and call on the government to promote mandatory major repairs. If there are design problems involved, they should be improved.
According to her understanding, according to the guidelines, the iron gate wheel needs to be inspected for the degree of wear and corrosion every three months, and the overall inspection is carried out once a week, but there may not be enough guidelines in some places. public account
Yau Ma Tei Maternal and Infant Health Centre crushed to death Security EMSD and Labour Department officers arrived at the scene to investigate the crushed security engineer of Yau Ma Tei Maternal and Infant Health Centre. The security engineer is expected to generate 1,800 pounds of force. It was too fast to escape. The security guard died after 6 hours of rescue. The female security guard was crushed by the collapse of the iron gate of the Yau Ma Tei Maternal and Child Health Center.
