【Sea and River Safety Discussion】Is this really the only potential hazard?

I really can’t see any other potential problems

No special gloves! The floor is too messy! The welder cable connector is exposed! Only 3 were seen.

Example 2: An electric shock was suffered when touching the welder’s tips while changing the welding rod. 1. Incident details: A young female welder at a shipyard was welding inside a ship’s cabin; due to the high temperature and poor ventilation in the cabin, she sweated heavily, causing her work clothes and leather gloves to become completely soaked. While changing the welding rod, touching the tip of the welding torch caused a spasm that led to falling backward; the welding torch fell on the neck and could not be removed, resulting in an electric shock. The person died despite efforts to save them after the accident. 2. Analysis of main causes: (1) The no-load voltage of the welding machine is too high, exceeding the safe voltage level. (2) The high temperature inside the cabin causes welders to sweat heavily, reducing their body’s resistance and increasing the risk of electric shock. (3) If an electric shock is not detected in time, the current remains flowing through the body for a prolonged period, causing severe damage to vital organs such as the heart and lungs, rendering rescue efforts ineffective.

Case of an electric shock accident involving a welder during high temperatures in summer I. Accident sequence Around 9:30 a.m. on July 22, 2014, Zhang, a welder from the equipment department of a chemical plant, climbed onto a mobile scaffold in order to weld and repair a leaking pipe, while another worker named Jiang was responsible for overseeing operations on the scaffold. At around 9:40, Jiang heard Zhang shout loudly; he saw that Zhang’s hand holding the welding torch was trembling. Jiang stepped forward to pull the wire connected to the welding torch, but was unable to do so. He quickly climbed down from the mobile climbing platform and turned off the power to the welding machine, after which Zhang fell from the mobile climbing platform. He was transported to the hospital for treatment, but died despite efforts to save him. According to the diagnosis by the hospital, Zhang died from severe head injuries and electric shock. II. Direct cause of the accident: The insulated handle of the welding torch was damaged, resulting in electric leakage; the mobile working platform lacked safety protection devices, which led to electric shock followed by a fall, causing secondary injuries that resulted in death. III. Indirect causes of the accident: Poor management at the work site; workers ignored safety procedures by not wearing safety belts or helmets, and by using uninsulated canvas gloves as well as welding torches with damaged insulated handles; moreover, the safety instructions provided were unclear. The safety hazard inspection was not thorough; no safety issues were identified with the welding torches or mobile climbing platforms. IV. Warnings regarding electric shock accidents among welders: A current of just dozens of milliamps passing through the human body can stop breathing, while a current of just dozens of microamps flowing directly through the heart can cause fatal ventricular fibrillation. The perceptible current at power frequency for humans is 0.5–1 milliampere, while the let-go current at power frequency is 5–10 milliampere. The current flowing through the human body is determined by the body’s contact resistance. At a contact voltage of 100–220 volts, in a dry environment, with the current flow from left hand to right hand, and a contact area of 50–100 square centimeters, the human body resistance is 1000–3000 ohms. In summer, the weather is rainy and the air is humid, which reduces the insulation performance of electrical equipment ； When the weather is hot, the body sweats more, the skin’s resistance decreases, and as a result, the current flowing through the body increases ； Coupled with factors such as workers not wearing work uniforms and insulating protective gear, electric shock accidents are frequent and severe in summer, posing a serious threat to the safety and health of workers; this issue requires utmost attention from them. The casing, handle, plug, switch, load cable, etc. of hand-held power tools must be in good condition. Insulation checks and no-load tests must be conducted before use, and the tools can only be used once the insulation meets the requirements and they operate properly under no-load conditions. When using hand-held power tools, insulating protective equipment must be worn as required.

The rebar in mass concrete is quite dense, but it can’t really be said to be messy.

This is correct under normal circumstances, but when the welding wire is exposed in multiple places, it creates safety hazards; of course, it is still the wire that causes these hazards