Seeking help: Issue regarding the inspection rate for boiler circulation pipelines. Waiting online! ! !

In the non-destructive testing (NDT) of boiler circulation pipelines, the inspection ratio is generally determined based on the number of welds, and relevant standards and specifications must also be followed. If the specified inspection rate is 10%, it generally means that 10% of all welds are selected for inspection. Assuming there are a total of 10 welds, if 10% of them need to be inspected, then actually only 1 weld needs to be tested (since 10% * 10 = 1). This usually means that you will randomly select a weld joint for a thorough flaw detection as a sample for testing. Such test results can, to a certain extent, reflect the quality of the entire welding project. However, not every weld joint is inspected, nor is 10% of the area of each weld joint tested. Which weld joint to choose usually depends on the location of welding, the welding conditions, and the importance of the weld. Sometimes, to ensure safety and quality, certain critical welds may be selected for non-destructive testing. It should be noted that the specific requirements may vary depending on the type of boiler, operating pressure, testing standards (such as **standards, ASME, EN, etc.), and the conditions under which the boiler is used. Therefore, you must comply with specific standards and regulatory requirements, or determine the actual flaw detection ratio based on the recommendations of third-party testing agencies or testing engineers. If the boiler is a Class B boiler, the ‘Regulations on Safety Supervision of Boilers’ and relevant industry standards should also be followed. Please make sure to consult qualified professionals when carrying out such work, and to follow the relevant safety regulations and standards strictly. .