两种石油管道焊接典型标准的焊工评定区别分析

Different analysis of welder qualification test on two typical codes in submarine pipelines welding

焊接海底管道常用的两个标准是API1104(2007)和DNV-OS-F101(2007)。焊工的操作技能对于石油管线的安全至关重要,焊工资质评定是控制焊接质量的重要切入点。焊工资质评定包括重要变素、焊缝检验方法、评定范围三方面的内容,结合实际工作,对比分析了两个标准在焊工资质评定方面的差异。分析表明,评定标准在焊接方法、焊接位置的表示,接头型式,填充金属材料的分类,焊缝检验方法与验收标准,母材(包括规格尺寸)评定覆盖范围等存在着显著差异。掌握标准的要求有助于提高资质评定的有效性,保证项目施工的效率和质量。

API 1104 （2007） and DNV-os-f-101 （2007） are applied to the welding of submarine pipeline.The welder performance is important to assure the pipelines safety.And the welder qualification is the key to quality control.The welder performance qualification includes three aspects such as essential variables, test examination and range of qualification.From a practical view ,this paper mainly focuses on the discrepancies by adopting a eontrastive analysis method.According to analysis,there are significant diffennces in welding proc, esses,welding positions,joint design,welding consumables,methods of tests and acceptance criteria.The welder qualification accuracy can be improved and the pipelines welding quality and efficiency guaranteed.