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In recent years, accidents in confined-space operations have occurred frequently and often involve group deaths and injuries, and even after the first fatal accident, fatal accidents still occur, often in the process of rescue, thus indicating that the majority of operators do not have sufficient knowledge of the dangers of confined-space operations and have not mastered the preventive measures for accidents in confined spaces. The risk of confined space operation is like a ghost, invisible but extremely dangerous. The risk factors of confined space operations are mainly the lack of oxygen and the presence of toxic and hazardous gases, as well as the accompanying risks of electrocution, falling from a height and explosion, etc. Once these risk factors have been recognized, targeted measures can be taken and easily eliminated and controlled, thus safeguarding the safety of the operators.
1.Before the operation of confined space, the person in charge of the approval of the operation program, personnel and equipment, etc., and sign to confirm, strictly abide by the principle of “first ventilation, and then testing, and then operation”.
2. When operating in a confined space, warning areas and warning signs shall be set up in conspicuous locations to remind of the existence of danger. Operators must wear and use labor protective equipment correctly and have reliable communication with the outside. During the operation, ventilation measures should be taken to maintain air circulation, and the guardians should not leave the operation site and keep in touch with the operators.
3. The accident is strictly prohibited blind rescue, do not have the conditions of independent rescue, call for help in time, never allow people not wearing personal protective equipment forced rescue.
4. Walking outside, please avoid around the well cover, beware of well cover loose lead to fall.
5. Do not throw fireworks and kindling to the cellar well, the confined space in the accumulation of flammable and explosive substances mixed with air to form explosive mixtures, if the concentration reaches its explosive limit, when the ignition source will occur in an explosion!
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