Hydraulic pressure test of LPG storage tanks
Comprehensive inspection In addition to the above inspection items, a comprehensive inspection of liquefied gas storage tanks also requires a pressure test (generally a hydraulic test). Conduct non-destructive testing spot checks on major welds or inspect all welds. However, for liquefied gas storage tanks with very low pressure, non-flammable or non-toxic, and non-corrosive media, if no defects are found and certain operating experience is obtained, non-destructive inspection is not required. The comprehensive inspection cycle of containers is generally at least once every six years. For qualified liquefied gas storage tanks containing air and inert gas, after gaining experience in use and confirming that there is no corrosion in one or two internal and external inspections, the comprehensive inspection cycle can be appropriately extended.
