Title : Underwater welding technology with application of cyber physical system
Abstract:
Introduction : Welding demand in offshore and marine applications is increased with the increasing in oil and gas activities as well as increasing in the marine transportation and industrial applications. Applications of underwater welding well be increased in Kuwait in the coming years due to the strategic directive of the country toward starting the offshore oil and gas exploration and production, and the increase in marine transportation projects. Therefore, there is a need to understand the concept of underwater welding and different techniques used in the market. In this paper, a brief description of the different commercial underwater techniques will be presented taking into account of a few advanced welding techniques. Many premier national Technological institutions are associated with under water Welding Technology aiming to address the growing demand for an advanced technology with skilled underwater welders in this field.
About Underwater Welding: Underwater welding, or hyperbaric welding, involves joining metal components submerged in water, typically for repairing or constructing marine structures, pipelines, and offshore oil rigs. Given the complexity of working in submerged environments, specialized training is required to ensure both the safety of the welder and the quality of the weld.
Classification of Under Water Welding:
- Wet Welding: Participants will practice welding directly in water using shielded arc welding techniques. This method is crucial for quick repairs in offshore environments.
- Dry Welding (Hyperbaric Welding): A controlled dry chamber is created underwater for precision welding, ensuring high-quality welds in critical applications.
Key Benefits:
- The versatility and low cost of wet welding makes this method highly desirable. Fast method.This technology is highly valued, given its focus on industry-standard practices and collaborations with leading marine and offshore companies.
- Skill Development: Participants in courses/programs in Under water welding Technology gain a comprehensive understanding of the challenges and techniques in underwater welding, enhancing their employability in high-demand sectors like offshore oil and gas, marine repair, and construction.
- Technological Integration: Application of the latest technologies, including robotic welding systems and underwater welding sensors, preparing participants for future innovations in the field.
- It is less costly compared to dry welding. The welder can reach portions of offshore structures that could not be welded using other methods.
- No enclosures are needed and no time is lost building. Minimal equipment needed for mobilization.
Dis advantage: Hydrogen Embrittlement – Large amount of hydrogen is present in the weld region, resulting from the dissociation of the water vapour in the arc region. The H 2 dissolves in the Heat Affected Zone (HAZ) and the weld metal, which causes Embrittlement, cracks and microscopic fissures. Cracks can grow and may result in catastrophic failure of the structure.
Conclusion: There is a big need to well understand underwater techniques, secure the needed resources and experts and develop the national capabilities to be ready meet the country needs. Therefore, preparation of the needed resources and development plans to improve the skills in underwater welding techniques need to be considered.
