1. First of all, workers should be given three-level education and training before construction, emphasizing safety construction awareness.
2. Carry out safety protection work at the construction site, and workers should wear safety helmets and safety belts during construction. Construction can be refused at construction sites that do not have safety measures, especially at "four-kou, five-border" sites. Conduct frequent inspections and education to promptly discover potential safety and quality accident hazards and eliminate them in a timely manner to avoid accidents. The following points are strictly prohibited:
(1) Construction workers are strictly prohibited from going to work after drinking, let alone working at high altitudes. All construction workers must wear qualified safety helmets when entering the site. Safety belts must be worn when working at a height of more than three meters, otherwise education, warnings and fines will be given depending on the circumstances.
(2) Construction workers are strictly prohibited from wearing high heels, hard-soled spike shoes and slippers when entering the site, and are not allowed to use mechanical and electrical equipment unrelated to this type of work. Violators will be fined.
(3) Smoking or working with open flames is strictly prohibited in wooden sheds, warehouses, and flammable and explosive areas.
(4) Non-relevant operators are not allowed to enter the dangerous area, and construction workers are not allowed to bring their family members or children into the construction site.
3. Reporting procedures for emergency incidents
When an accident occurs, the parties or witnesses → Waterproof team safety officer (Lu Zhihe, 80220689) → Project technical person in charge (Pan Chuanlian 88113983) → Project Manager (Wang Dong 88119880)
4. Rescue measures:
(1) When an accident occurs, guide on-site workers to evacuate from safe passages.
(2) Rescue the injured to a safe area.
(3) Carry out simple rescue and bandaging work for the injured.
(4) Timely transfer seriously injured persons to medical institutions for treatment.
5. Restoration work after the termination of emergency measures
After the termination of emergency measures, effective measures should be taken to prevent the expansion of the accident, protect the accident site, and carry out work by relevant departments in accordance with relevant national regulations and time Incident Report.
Chengdu Guihu Waterproof Engineering Co., Ltd.
August 8, 2006
Construction emergency accident handling measures [Part 2]
1. Handling of major emergencies in the construction area
If a major traffic accident, major fire accident, major engineering safety accident, major public health accident occurs in the construction area, For emergencies such as major natural disasters, major violent criminal cases, and major public security cases, the relevant emergency response leading group will be reported immediately after the incident occurs for unified command and handling, and the project department will fully cooperate.
2. Sudden events that may be encountered during construction mainly include: large-scale landslides, rock bursts, large amounts of water, fires, floods, poisoning accidents caused by harmful gases, power outages, and communication interruption accidents. wait. For emergency measures related to large-scale landslides, rock bursts, large amounts of water, etc., see relevant articles. Emergency measures for other outstanding incidents are as follows:
1. On-site fire prevention and emergency measures
Construction machinery and equipment , high-voltage electrical equipment, and flammable materials are the focus of fire prevention at construction sites. Fire prevention and emergency measures must be formulated in strict accordance with the occupational safety and health management system certified by our bureau. As the tunnel progresses, the electrical lines in the tunnel become longer and longer, making it extremely prone to fires. During the construction, electricians will regularly inspect and conduct regular inspections of the wires to ensure the safety of the wires and avoid fires caused by short circuits in the wires.
In order to ensure emergency fire-fighting needs, fire extinguishers should be equipped according to fire prevention requirements on construction equipment, near high-voltage electrical equipment and flammable materials, to ensure normal water supply at the construction site, the water supply pressure meets fire protection requirements, and to set up adequate fire protection Use water connections and fire hydrants to ensure that fires can be put out quickly when a fire occurs.
Once a fire breaks out in the cave, the construction should be stopped immediately and the fire alarm phone should be called immediately. Before the arrival of the fire brigade, if the fire is small, the construction workers should promptly extinguish the fire with the on-site fire fighting facilities. However, if When the monitored oxygen concentration is low or the fire intensity increases, threatening the safety of construction workers, fire fighters should quickly evacuate the cave and professional firefighters with oxygen supply equipment enter the cave to put out the fire. After the fire is extinguished, all ventilation equipment in the cave will be started to dilute and discharge toxic gases. Construction will be resumed after confirming that the harmful gas content is lower than the allowable concentration.
2. Prevention and emergency measures of poisoning accidents caused by harmful gases
There are two main situations in which harmful gases are produced. One is that harmful gases overflow from the formation during excavation. Second, when the ventilation equipment is insufficient or malfunctions during the excavation process, the harmful gases generated by the fuel equipment and excavation blasting cannot be discharged in time and accumulate in the cave.
During construction, based on geological detection and forecasting, monitoring instruments and alarm devices are installed near the working surface where harmful gases (gas, etc.) may exist, and the concentrations of harmful gases and oxygen are monitored in real time, and harmful gases are found to overflow or be harmful. When the gas concentration exceeds the standard and an alarm is issued, the construction workers immediately evacuate the working surface and strengthen ventilation. The source of the gas will be identified afterwards, grouting and other measures will be taken to block the source, and work will be resumed when the concentration of harmful gases is reduced to the allowable range. If the amount of harmful gases escaping is small, construction ventilation should be strengthened, and construction should be continued when the concentration of harmful gases is controlled within a safe range.
In order to ensure that harmful gases generated by excavation blasting and fuel equipment can be discharged in time, ventilation design should be carefully carried out before starting work, sufficient ventilation channels should be considered, sufficient ventilation equipment with good performance should be selected, and there should be some backup , the ventilators are always started during the construction process of each working face to ensure the ventilation required for construction and ensure the safety of construction workers in the cave. At the same time, oxygen and harmful gas monitoring instruments and alarm devices should be installed in caverns with a lot of mechanical equipment, relatively concentrated workers, long ventilation pipelines, tortuous lines, and difficult ventilation. Once the oxygen concentration is found to be lower than 19% or the concentration of harmful gases is found, If it is too high, the construction workers should be evacuated in time, ventilation should be strengthened, the causes should be carefully analyzed, solutions proposed, and work should be resumed after the ventilation problems are resolved.
During the excavation process, construction workers need to wear gas masks. If a construction worker is accidentally poisoned or suffocated during construction,
During the accident, the TV monitoring personnel and other people in the cave who are not poisoned must The personnel immediately called 119 fire alarm and 120 emergency hotline to request rescue. In order to prevent the rescuers from being poisoned, professional firefighters with oxygen supply equipment entered the cave for rescue. Medical staff gave first aid at the entrance of the cave and were quickly sent to the county hospital for treatment.
3. Emergency measures for power outages
(1) Equip a backup diesel generator. When the high-voltage circuit fails, the diesel generator will immediately start the emergency power supply to ensure lighting and drainage in the cave. electricity.
(2) Set up emergency lighting in main traffic channels to provide emergency lighting in the event of a power outage and ensure the safe evacuation of construction workers.
(3) Construction workers should wear flashlights to provide lighting when evacuating the working surface after a power outage.
4. Construction communication emergency measures
During the construction of this standard, in addition to receiving the internal telephone number of the Jinping II Hydropower Station project provided by the contractor, the project department is equipped with a program-controlled telephone switch to establish The underground cavern construction communication system is connected to the internal telephone terminal provided by the contractor, and an internal telephone is installed on each working surface.
In addition, after the project starts, the project department will negotiate with the local communication company's business outlets to introduce mobile communication signals into the underground caverns, and form an internal and external communication system together with the internal telephone number on the working surface, and They serve as backup for each other to ensure smooth communication in the underground cavern construction.