Safety measures for operation in the hottest trenc

2022-08-05
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Safety measures for operation in the trench

1. Strictly comply with the requirements of jb/t8521.1 (2) 007 safety of woven slings Part 1: safety of synthetic fiber flat sling for general use and JBT 8521.2 (2) 007 safety of woven slings Part 2: mechanical testing of synthetic fiber round sling for general use. Comply with various safety rules and regulations, and carry out daily work, temporary tasks and emergency rescue; It is strictly prohibited to simplify operation procedures, lower operation standards and operate against rules

2. During the working period, you must dress according to the regulations and correctly wear and use labor protection articles. For downhole operation, safety helmet, gas mask, safety belt and safety rope must be worn, and the rope shall be equipped with Bell and other communication equipment

3. All operators must hold valid special operation certificate

4. Before operation, carefully check whether the safety protection devices are in good condition. If there are hidden dangers and diseases, they should be handled in time, otherwise they are strictly prohibited to use. It is forbidden to use materials with poor technical status; It is forbidden to use safety accessories, instruments and equipment that have expired in regular inspection

5. Trench inspection must be carried out by more than 2 people, and the call response system shall be implemented. It is strictly prohibited to operate without safety protection and supervision personnel

6. Before operation, open the trench mouth for ventilation for 15 minutes. If necessary, open multiple inspection wells connected with it for ventilation, or use blower for forced ventilation; For the operation of an independent well, use a special instrument to check whether there is harmful gas in the trench before going down the well, and then go down the well for operation after confirming that it is safe. After the operation is completed, the cleared materials shall be cleaned in time, and the well cover shall be installed stably and firmly

7. Sufficient lighting shall be provided for heating trench operation. Low voltage operation lamps below 36V or other low-voltage lighting equipment must be used. It is strictly prohibited to use ordinary lighting fixtures

8. Underwater operation is strictly prohibited; When there is water in the well and it is necessary to go down the well, the harmful gas must be released for more than 15 minutes, and the operation can be carried out only after the toxic gas detector is used for testing

9. Well supervisors should pay close attention to the movement of water in the well and the situation on the ground. Once the operation safety of underground operators is endangered, they should immediately call or contact underground personnel to go to the well

10. Strict technical guarantee measures and effective safety measures must be formulated for the construction of various wells with a height of more than 2 meters, which must be reviewed and approved by the relevant technical departments. The station master and technicians must come to the site for supervision during the construction

11. For underground operation, safety warning signs and protection must be set around the well cover, and sufficient lighting warning lights must be set at night

12. It is forbidden to stand in the well water when using submersible pump and pumping desilting operation

13. During the dredging operation under the dredger shaft, the electrical power supply line must be installed with a leakage protector. There shall be no irrelevant personnel and sundries around the dredger to avoid injury and damage to objects caused by the dredger. The dredger shall operate in good condition and shall not operate with faults. Before the flexible shaft is sent into the pipeline, it is strictly prohibited to turn on the power supply for operation. It is strictly forbidden to wear gloves when conveying the dredge belt. It is strictly forbidden to touch the flexible shaft by hand during use. When it is stuck in the pipeline, it is strictly forbidden to pull the flexible shaft violently

14. For pipe trench excavation, the distance between operators shall be greater than 2m, and close arrangement operation is not allowed; The spoil of the other party shall be at least 0.8m away from the slope of the pipe trench, and no heavy objects shall be stacked within 5m on both sides of the pipe trench. When excavating pipe trenches approaching or crossing roads, fences or warning signs shall be set up 5 meters away, and red lights shall be set up at night for early warning

15. The experimental results of manual registration of large underground pipeline leakage can also be uploaded to the upper computer, and the completed trench must be provided with support to prevent collapse. When using the water pump for drainage, check whether the wires, water pipes, etc. are firmly installed and whether the pump body has electric leakage

16. Waterproof clothes and boots shall be worn for underwater operation. The operation time shall not be too long. When the water temperature is below 5 ℃, anti freezing measures must be taken; When working in ditches and wells with infectious diseases or pollution sources, protective equipment must be worn and protective measures must be taken. Disinfection treatment shall be carried out after operation

Tainan housing construction branch

date, 2007

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