Inspection of carbon dioxide storage tank

The application of carbon dioxide storage tanks is more and more extensive. In order to maintain good results during use, maintenance is required during operation and corresponding inspection work is also required.
 
The appearance and internal inspection of the cryogenic CO2 storage tank should be carried out after stopping use and cleaning the inside of the container. The main content of the inspection includes all the contents of the external inspection, as well as external and internal corrosion and abrasion; use the naked eye and a magnifying glass to check all welds, head transition areas and other stress-concentrated parts for cracks, use ultrasound or radiation when necessary Flaw detection checks the internal quality of the weld; measures the wall thickness. If the measured wall thickness is less than the smaller wall thickness of the vessel, the strength should be checked again and the pressure reduction or repair method should be proposed; If necessary, metallographic inspection should be carried out on vessels that may cause changes in the metallographic arrangement of metal materials; the main bolts of high-pressure and ultra-high-pressure vessels should be checked for cracks by magnetic powder or coloring. After inspection, analyze the defects found and put forward treatment suggestions, and re-inspect after repair.
 
The inspection cycle for carbon dioxide storage tanks is generally once every three years, but the inspection cycle for containers containing strong corrosive and highly toxic media should be shortened. In operation, the inspection period should also be shortened for vessels with serious defects and vessels with poor welding quality and unknown anti-medium corrosion materials.