The Evaluation of Burst Pressure for Corroded Weld in Gas Pipeline

가스배관에서 원주 및 심 용접부의 부식손상 부위에 대한 파열압력 평가

The failure pressure for corroded pipeline was measured by burst testing and classified with respect to corrosion sizes and corroded regions - the body, the girth weld and the seam weld of pipe. A series of finite element analyses were performed to obtain a limit load solution for corrosion defects on the basis of burst test. As a result, the criteria for failure assessment of corrosion defect within the body, the girth weld and the seam weld of API 5L X65 gas pipeline were proposed.