A 55-year-old technician from the Tree Section of the Leisure and Cultural Services Department, Zeng Sairu, died in a fatal accident during the repair of a tree at the West Ring Lift and will be buried in Haoyuan.
Mr. Zeng Sairu's eldest son, Mr. Liu, went to the funeral while trying to find the cause of his mother's death.
He disclosed to "Hong Kong 01" that one day after the incident, he sent a letter to the elevator manufacturer BENELLI to understand the cause of the accident. He received a reply that the elevator involved has been in production for 30 years. No similar accident has occurred in the past. After checking the photos, he believes that the rocker arm burned. The welding method was equipped with iron branches, and the disconnection position happened at the end of the welding position. The modification and the deteriorating wear and tear over the years were undetected, which led to this tragedy.
Pan Zhuohong, the managing director of Zhongke Engineering and a construction engineer, explained that the high heat of welding will cause the strength of the metal to be damaged. The welding method is used to install iron branches, resulting in a weak interface. The manufacturer's reply confirms that the lifting platform has been modified.
He criticized the Leisure and Cultural Services Department’s careless machinery management and engineering supervision, questioned the Department’s purchase of old machines that had already been modified, and the annual inspection failed to prevent accidents. He urged that the use of similar manned and hoisting machinery and equipment should be stopped, so as to avoid repetitions. Casualties.
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Be sure to find out the cause of (mother) death, my grandmother was killed.
Mr. Liu, son of Zeng Sairu, who died accidentally during tree repairing
BENELLI: There has been no similar accident in 30 years of production of the involved elevator
The Leisure and Cultural Services Department's female tree-pruning technician Zeng Sai Ruhun broke the lifting platform, and the Civil Service Bureau approved the burial of Haoyuan.
While Zeng Sairu's family was running around for fun, they persevered in tracing the cause of Ms. Zeng's death.
A large number of accidental doubts such as the cause of the breakage of the lifting platform, the operating conditions, and the pre-work inspection conditions have not been solved.
Zeng Sairu’s eldest son, Mr. Liu, said that one day after the incident, he sent a letter to the Italian manufacturer of elevators, BENELLI, to inquire about the cause of the accident. There has never been a similar accident.
After checking the photos, the manufacturer’s technical department pointed out that the broken place was not the most stressed position of the boom tube. It is believed that the rocker arm had been welded with iron branches, and the disconnection happened just at the end of the welding position. The modification and the deterioration of wear and tear over the years No one found out, leading to this tragedy.
He questioned that the accident involved human negligence. "There was an error in maintenance. (The agency) used a 30-year-old machine that has been discontinued to collect second-hand garbage or defective goods (during the procurement process)?"
The family held two meetings with the Leisure and Cultural Services Department before and after, but the identity of the operator was not known.
Mr. Liu pointed out that the LCSD proposed that the machine has two control devices. One control device is located near the rear of the vehicle. It can be synchronized with the control device on the workbench to control the entire machine. It can be "grab control", which is very dangerous to the workers on the workbench.
Pan Zhuohong, the managing director and construction engineer of Zhongke Engineering, who was the first to propose that the lifting platform was broken and questioned the possibility of modification or repair of the boom, explained in an interview with "Hong Kong 01" that high welding heat will cause metal strength to be damaged, which can be used for welding. The method was to install iron branches, resulting in a weak interface position, and the manufacturer's reply confirmed that the lifting platform was modified.
He suspects that the purpose of the modification is to increase the load-bearing capacity of the rocker arm, and the lifting platform itself should not be used to lift the weight.
According to the factory letter, the lifting platform can only support a maximum of 200 kg, including the weight of about two people.
He questioned whether the LCSD bought a new machine 30 years ago or purchased an old machine that has already been modified during the procurement process, and the annual inspection has not been carried out. It is still unknown whether the twice-a-year inspection is outsourced. He criticized the LCSD machinery Rough management and engineering supervision.
In addition to the mechanical issues, the responsibility for the inspection before the start of construction is still unclear. As far as he knows, the CAM records of the government vehicles behind the elevator platform are missing. Only the moment and later fragments of the incident are left for the inspection before the start of construction. The record disappeared.
He urged to stop using similar manned and hoisting machinery and equipment to avoid further casualties.
(Pictures provided by family members)
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Accidental fragment of the lifting platform crashed and shaken the engineering vehicle
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