美国管道焊接标准API Std 1104—2013变更简析

Change Brief Analysis on Pipeline Welding Standard API Std 1104-2013 of United States

焊接作业是管道建设施工和运行维护中的重要环节,长期服役管道的焊接维修作业频繁,提高管道焊接作业技术水平和安全性具有重要意义。美国制定了焊接作业安全综合性标准API Std 1104,我国行业标准SY/T 4103—2006的修改就借鉴了API Std 1104—1999标准,因此有必要跟踪研究该标准的技术更新信息。API Std 1104—2013主要在焊接工艺评定、焊接接头试验、焊接工艺变更、管口焊接等方面进行了更新,修改了相邻焊道之间的允许时间间隔、焊缝余高允许值等指标参数,新增了缺陷清除和返修等内容。建议国内标准SY/T 4103—2006修订时纳入更新内容,提高我国管道焊接作业的技术水平。

Welding operation is an important link in pipeline construction, operation and maintenance stage. It is of great significance to improve the technical level and safety of pipeline welding operation because of the frequent welding maintenance for long-time service pipelines. The United States has developed a comprehensive standard for welding safety, namely API Std 1104. The petroleum industry standard SY/T 4103- 2006 in China has drawn lessons from the API Std 1104- 1999 standard, so it is necessary to study and track the technical update information of this standard. API Std 1104- 2013 are mainly updated in aspects such as qualification of welding procedures, testing of welded joints, welding process change and pipeline joint welding. Parameters such as the allowable interval time between adjacent weld passes and the allowable value of excess weld metal raised above parent metal are modified, and content such as defect removal and repair are added. In order to improve the technical level of pipeline welding operation in China,it is suggested to adopt the updated content for the revision of the domestic standard SY/T 4103-2006.