Non-destructive testing (NDT) is a method of detecting internal and surface defects in materials without destroying the integrity of the sample. Within this technique, leakage testing (LT) is one 

of the important application areas. In this paper, we will discuss the principles of leakage testing, the range of applications, and the positive impact on related industries.

Principles of Leak Detection

Leak detection technology determines the presence of leaks by identifying potential holes or cracks in materials. It typically utilizes the principles of material conduction and scattering to detect 

changes in material density or properties due to leakage. For example, when a liquid or gas leaks from a container, it produces effects such as sound waves, heat or light, and these changes can 

be detected by sensors and translated into visualization.

Applications of Leak Detection

Leakage is a common and potentially dangerous problem, widely found in industrial production, petrochemical, nuclear energy and pipeline transportation. Leakage incidents may cause fires, 

explosions, environmental pollution, and even jeopardize the lives of personnel. Therefore, leak detection is of great importance in these industries. For example, in chemical plants, leaks can be 

detected and repaired in a timely manner through the application of leak detection technology, reducing the risk of environmental pollution and human casualties.

Positive impacts of leak detection

The application of leak detection technology can bring a series of benefits. First, it can improve production safety and efficiency. By detecting leaks at an early stage, the plant or equipment can 

take timely steps to repair them, thus avoiding potential hazards and production interruptions. Secondly, leak detection also helps to reduce wasted resources. The occurrence of leaks usually 

leads to the loss of materials, energy and property, and the timely repair of leaks can reduce the waste of resources and lower the cost of repairs. In addition, the application of leak detection 

technology helps to protect the environment by reducing pollution of soil, water resources and the atmosphere.

Expert Opinion

According to the International Association for Non-Destructive Testing (ASNT), leak detection technology is widely used worldwide and has achieved impressive results. Experts believe that the 

continued development of leak detection will help improve safety, reduce resource waste and protect the environment.

Practical Application Examples

In the oil and gas industry, leak detection technology has been widely used for monitoring pipelines and storage tanks. By using technologies such as sensor networks, remote sensing and image 

processing, leaks in pipeline systems can be monitored in real time and timely countermeasures can be taken to prevent accidents.

Conclusion

Leak detection, as one of the important applications in the field of nondestructive flaw detection, plays a vital role in industrial production and infrastructure security. It can not only improve the 

safety and efficiency of production and reduce the waste of resources, but also help to protect the environment. With the continuous progress of technology, leak detection technology will 

continue to develop and be more widely used in various industries in the future, contributing to the sustainable development of society.