Diver Frogman Service Company - Hengrui Underwater Engineering Co., Ltd
1、 Introduction to the service of the construction labor team for underwater wall removal service:
Underwater crushing is a quick, safe and cost-effective scheme for underwater demolition of plugging walls. The underwater removal of the sealing wall requires a professional diving construction team. Experienced divers - our divers have long-term experience in underwater operations, and many sealing walls are removed every year. Our divers have professional engineering diving certificates issued by Shanghai Salvage Bureau, so that everyone can work with certificates
2、 Equipment required for underwater plug removal:
(1) Light diving equipment E300.
(2) 0.35 cubic meters Air compressor One.
(3) Two sets of underwater interphone systems.
(4) A bottle of medical oxygen.
(5) Underwater Crushing equipment a set.
All personnel and equipment are provided by our company for labor and materials.
3、 Method statement for underwater blockage removal:
1. First, divers should conduct preliminary underwater exploration and visual inspection on the plugging wall piles to be removed to understand the site construction environment, especially how large the water level drop on both sides of the plugging wall is. The water level drop will form water pressure. Once the hole is broken, there will be suction. Divers should be careful to prevent being sucked.
2. The diving assistant prepares diving equipment and underwater crushing equipment, and the diver be launched When reaching the operation position, a small hole of about 10cm shall be broken to balance the water level on both sides of the plugging wall. At this time, divers can leave the water to rest and wait for the water level on both sides of the plugging wall to balance.
3. After the water level on both sides of the plugging wall is balanced, the divers begin to remove the entire plugging wall, and try to select the connection of two bricks to remove in a time-saving and labor-saving manner.
4. After dismantling, the diver will put the broken bricks into the woven bag and notify the personnel on the water to lift them out of the well bottom.
5. Arrange the on-site equipment and clean it.
1. Our company's underwater unblocking construction teams are teachers who have hundreds of times of experience in plugging. They have rich experience in underwater unblocking and can serve underwater plugging environments with various difficulties.
2. Diving is a high-risk occupation, and what we are engaged in is also diving engineering. And it has always been and will be. There are many elements that constitute diving risks. Finding out the risk source is conducive to reducing or avoiding risks, thus improving life safety and laying a solid foundation for the company's development.
3. Underwater operation is a kind of work with high technical content, and the visibility in turbid water is zero. To complete the plugging task in this environment, the requirements for divers are quite high. At the end of each dive, the safety officer should check and repair the equipment to ensure that the equipment is in good condition. Before diving, the diver should check the equipment again in person to ensure that it is correct before diving.
4、 Project example:
1. Sewage well dn1500, Xinhua Road, Tongzhou District, Beijing The Conduit Blocking, water depth 5.5 meters. [Excellent project]
2. The underwater pipeline of sewage well dn1200 in Hengda Shanshui City, Wuqing District, Tianjin City is blocked with a depth of 4.2 meters. [Excellent project]
3. The sewage well dn800 at Renmin Middle Road, Cixian County, Handan City, Hebei Province, has been blocked with the underwater pipeline at a depth of 3.6 meters. [Excellent project]
4. Sewage well dn1350 in West Lake District of Hangzhou City is blocked with underwater pipeline and water depth of 8m. [Excellent project]
5. The sewage well dn1800 in the south ring road of Zhengzhou City has been blocked with a water depth of 3.7m. [Excellent project]
6. The sewage well dn1500 underwater pipeline of Nanchang University Town is blocked, and the water depth is 5.6m. [Excellent project]
7. The sewage well dn2000 of Xi'an Logistics Avenue is blocked with a water depth of 4.3 meters. [Excellent project]
8. Zhengzhou sewage well dn1200 underwater pipeline is blocked, and the water depth is 6.5m. [Excellent project]
9. Qingdao Jiaozhou sewage well dn600 underwater pipeline is blocked, and the water depth is 2.8m. [Excellent project]
10. Underwater plugging of dn1800 sewage pipeline in Fangshan District, Beijing, with water depth of 3.6m [excellent project]
11. Tangshan dn800 sewage pipeline underwater plugging, water depth 3.5m [excellent project]
12. Underwater plugging of dn1000 sewage pipeline at Zhanqian Road of Xuzhou High speed Railway Station with water depth of 6m [excellent project]
13. Underwater plugging of dn1350 sewage pipeline in Langfang Development Zone with water depth of 4.8m [excellent project]
14. Sewage in Shajing Street, Bao'an District Water pipe Underwater removal of 53 plugging walls for network improvement project [excellent project]
5、 Construction safety responsibility:
Diving is a high-risk industry. The personnel of Yancheng Hengrui Underwater Engineering Co., Ltd. all work with certificates. The company has purchased accident insurance for all employees. Our company is responsible for the safety of our construction personnel. Therefore, our company has formulated strict safety rules and regulations:
Focus on diving safety:
1. The ventilated heavy diving operation group shall be composed of four persons for each group of diving operation, and shall be equipped with a full set of emergency diving equipment and rescue divers; The double group diving operation can be composed of eight people, but not less than seven people. Diving operation outside the base must be capable of diving in two groups at the same time.
2. Divers, line operators, telephone operators, and diving hose operators (pipe pullers) must be operated by formal diving operators, and no one is allowed to replace them (see the responsibilities of personnel at all posts in the diving operation team).
3. Before diving operation, the water depth, flow rate, water temperature and impurities in the pipeline at the operation site shall be understood and carefully filled in the diving log.
4. According to the underwater operation content and workload, combined with the impurities in the pipeline at the operation site, carefully analyze various situations that may be encountered in the diving operation, and develop the diving operation plan and emergency safety guarantee measures.
5. When the diving operation starts, fence devices shall be set around the diving operation; Signal lights shall be hung for night work, and sufficient working lighting shall be provided.
6. Diving operators must be familiar with the regulations on the use of signal ropes and the contact signals agreed in advance. In particular, the signal rope must be tied for operations in deep water, current surge, pipelines and reservoirs, so that in case of telephone failure, the signal rope can be used to transmit signals.
7. When two or more groups of diving operators are working at the same working face, they should always check their respective gas supply hoses and signal ropes to prevent intertwining.
8. The messenger and pipe puller must always observe the tightness of the signal rope and gas supply hose, and ask about the underwater operation at any time to prevent accidents. When two groups of divers work at the same time, the diver who finishes the task first must wait on the diving ladder after coming out of the water, and the diving gear can be unloaded after the other diver comes out of the water.
9. Tools and objects required for underwater operation shall be sent and received, and throwing is strictly prohibited. Divers are not allowed to carry heavy objects to rise out of the water.
10. The floating or heavy rubber hose can be selected according to the working environment. Floating rubber hose shall be adopted in underwater installation and removal works; Heavy rubber hose should be used when working in culverts, dams or areas with deep water and large flow velocity.
11. The diving equipment shall be kept and used in archives. Diving suits and gas supply hoses shall be regularly inspected, cleaned and disinfected. Those failing to meet the safety strength requirements shall be scrapped and out of service.
12. The oil-water separator in the gas supply equipment shall be drained in time and cleaned regularly according to the service time; The activated carbon or other substitutes in the air filter should also be replaced or cleaned regularly according to the use condition.
13. When diving outside, there must be written instructions from production scheduling and written safety technical disclosure prepared by technicians for the work, and the work can only be carried out after the purpose of the work is clear.
14. Divers should be regularly decompressed and physically examined.
