Special construction plan and precautions for underwater welding
First, the construction plan.
1.Pre-construction preparation.
Adequate preparation is required before underwater welding can be carried out. First of all, it is necessary to understand the environmental conditions of the construction site, including water depth, water quality, water velocity, underwater topography, etc. Secondly, it is necessary to prepare the equipment and materials required for welding, including welding machines, welding rods, shielding gases, etc. In addition, there is a need to develop and train safety measures to ensure the safety of construction personnel.
2.Construction technology.
The construction process of underwater welding mainly includes wet welding and dry welding. Wet welding refers to welding operations carried out directly under water, suitable for shallow waters. Dry welding, on the other hand, is carried out underwater by means of shielding gas, which is suitable for deep waters. When choosing the construction process, it is necessary to choose according to the actual situation.
3.Construction process.
The construction process of underwater welding mainly includes the following steps: first, the welding rod is baked and screened to ensure that its quality meets the requirements. Secondly, the welding operation is carried out, including positioning, spot fixing, welding and other links. In the welding process, it is necessary to pay attention to the control of welding current, arc voltage, welding speed and other parameters. Finally, the weld inspection and acceptance are carried out to ensure that the welding quality meets the requirements.
2. Precautions.
1.Safety precautions.
When carrying out underwater welding construction, it is necessary to pay attention to the implementation of safety measures. First of all, it is necessary to ensure that the qualifications and skills of the construction personnel meet the requirements. Secondly, it is necessary to ensure that the quality of welding equipment and materials meets the requirements. In addition, it is also necessary to develop safety operating procedures and emergency plans to ensure the safety of the construction process.
2.Environmental protection.
When carrying out underwater welding construction, it is necessary to pay attention to environmental protection. First of all, you need to avoid discarding waste in the water or polluting the water quality. Secondly, care needs to be taken to prevent the environmental impact of fumes and gases generated during the welding process. In addition, it is necessary to train and educate construction personnel on environmental awareness to ensure that the impact on the environment during construction is minimized.
3.Construction quality control.
When carrying out underwater welding construction, it is necessary to pay attention to construction quality control. First of all, you need to choose the right welding machine and welding rod to ensure that the welding quality and effect meet the requirements. Secondly, it is necessary to carry out cleaning and inspection work before welding to ensure that the quality of the base metal meets the requirements. In addition, weld inspection and acceptance work is required to ensure that the welding quality and effect meet the design requirements and use requirements. Finally, the welding defects need to be treated and repaired to ensure that the welding quality and effect meet the requirements.
In short, underwater welding is a technically difficult job, which requires full preparation, careful construction, attention to safety and environmental protection, and strict control of construction quality. Only in this way can the smooth progress and completion of the underwater welding work be ensured.