CAJ | 학술논문

曹妃甸11-2 FPSO在年检过程中，发现在其栈桥底座的焊道上出现了多处裂纹，影响了栈桥的安全使用，由于周向焊道较长，其焊接裂纹返修是个难题，在实际维修过程中，采用管外侧单边斜削45°焊接坡口，严格依照焊接工艺程序进行操作，采用小电流手工电弧焊高质量高效率的完成了周向焊道的返修任务。曹妃甸11-2 FPSO裂纹维修项目的顺利完工，为周向焊道裂纹返修提供了一个良好的实际应用经验，标志着在海洋平台现场返修工艺又有了一个新的突破，为此本文详尽的介绍了这种周向焊道返修焊接工艺的具体应用情况。
조비전11-2 FPSO재년검과정중，발현재기잔교저좌적한도상출현료다처렬문，영향료잔교적안전사용，유우주향한도교장，기한접렬문반수시개난제，재실제유수과정중，채용관외측단변사삭45°한접파구，엄격의조한접공예정서진행조작，채용소전류수공전호한고질량고효솔적완성료주향한도적반수임무。조비전11-2 FPSO렬문유수항목적순리완공，위주향한도렬문반수제공료일개량호적실제응용경험，표지착재해양평태현장반수공예우유료일개신적돌파，위차본문상진적개소료저충주향한도반수한접공예적구체응용정황。
There are many cracks on the bead of the loading bridge in annual survey of CFD 11-2 FPSO project, which make the loading bridge can not be used safely, repairing of the cracks on a circumferential bead is a dif icult problem in the structure welding. In the proces of maintenance,45° end bevel be used outside of the pipe, welding according to the WPS strictly, finished that job by low cur ent SMAW with high quality and high ef iciency. By the project of Cracks Inspection and Repair of CFD11-2 FPSO finished succes ful y, that is mean there is a favorable experience for the repairing of the cracks on a circumferential bead, a bet er breakthrough on the technology of the cracks repairing. This paper describes in detail the welding method applied in this project.