A pressure vessel wall thinned by corrosion from 0.5″ to 0.3″.
| Level | Description | Typical use | |-------|-------------|--------------| | | Simple, conservative screening using charts & tables | Fast field checks | | Level 2 | Intermediate analysis (stress formulas, partial factors) | Most common in engineering | | Level 3 | Detailed numerical analysis (FEA, fracture mechanics) | Critical or complex cases | api 579-1
: The standard is applicable to a wide range of equipment, including but not limited to pressure vessels, piping, and storage tanks. It is used for both new and existing equipment. A pressure vessel wall thinned by corrosion from 0