Fitness for use evaluation is an evaluation of the safety and applicability of pressure equipment to ensure that the equipment can operate safely under the expected conditions of use. It is conducted after a comprehensive inspection. Fitness for use evaluation includes stress analysis and calculation of pipelines, residual strength assessment of defects that endanger the structural integrity of pipelines and safety assessment of defects exceeding the standard, and prediction of pipeline remaining life for major potential risk factors that endanger pipeline safety. T-ALL INSPECTION is an independent third-party testing and evaluation agency that has mastered comprehensive pipeline inspection and fitness for use evaluation technology and has rich experience.