In order to reduce and prevent the occurrence of failure accidents of ln2 Cryogenic Tank, regular monitoring and non-destructive testing are carried out. We want to tell you about the non-destructive testing technology of ln2 Cryogenic Tank. The selection of non-destructive testing methods should first strictly follow the technical regulations of ln2 Cryogenic Tank equipment, relevant product specifications, and relevant technical documents and drawing rules. Next, let’s talk about the main guidelines that should be followed when using NDT technology:
1. Combination of nondestructive and destructive testing
Modern non-destructive testing is to inspect and test the internal and surface structure, properties and conditions of the object to be tested without damaging the object to be tested. Its major feature is that it does not damage the object itself. At present, non-destructive testing cannot replace destructive testing. On the one hand, it is because the non-destructive testing technology itself has limitations. On the other hand, some characteristics require destructive testing. For example, in order to improve the reliability of testing results, liquefied petroleum gas cylinders are not In addition to non-destructive testing, an explosion test is also required.
2. Select the right opportunity and method
When conducting non-destructive testing of LNG storage tanks, the appropriate implementation opportunities should be correctly selected based on objective testing guidelines, combined with the production conditions, materials, media and manufacturing process characteristics of LNG storage tanks. The selection of non-destructive testing methods should first strictly follow the technical regulations of LNG storage tank equipment, relevant product specifications, and relevant technical documents and drawing rules, and then according to the material, production method, operating medium, structure, use conditions and failure mode of LNG storage tank equipment, and Estimate the type, shape, location and selection of defects that may occur.
3. Learn from each other’s strengths to complement each other’s weaknesses and use various non-destructive testing methods
Different non-destructive testing methods have their own strengths. In order to detect as much defect information as possible and clearly understand the actual situation of LNG storage tanks, it is necessary to learn from each other’s strengths and make up for their shortcomings, and summarize and use various non-destructive testing methods. For example, ultrasonic flaw detection has high sensitivity, but the detailed detection of size and degree is not accurate. Summarizing the advantages of using a variety of detection methods can be obtained as reliable and accurate detection results.
The above three points are the non-destructive testing technology for lng storage tanks that has been compiled and released for everyone, and it is also necessary to adapt to the LNG storage tank equipment material, production method, operating medium, structure, etc., to estimate the type, shape, location and defects of the generated defects. Choose from history.
Post time: May-05-2022