Safety discussion and precaution measures about laser beam welding of pyrotechnic actuator

摘要：

　　Structure of pyrotechnic actuator used in AP1000 nuclear power plant squib valve was introduced,and laser beam welding danger of pyrotechnic actuator was analyzed.Sulfur-Free Black Powder charged in pyrotechnic actuator was test by Differential Scanning Calorimetry (DSC) method,and temperature at charging position of pyrotechnic actuator was measured during laser beam welding process,results of test and measure show that temperature at charging position is less than autoignition point of powder.To prevent accidents caused by spark splash,laser beam welding workshop was rebuilt,welding fixtures were designed,and safety precaution measures were added in welding technics,these measures can improve safety of laser beam welding process effectively.

关键词： pyrotechnic actuator laser beam welding safety

作者: ZHANG Yingchun ZHANG Wei YANG Anmin YANG Shubin GAO Fuping

作者单位: The 1st Research Department,Shaanxi Applied Physical Chemistry Research Institute,Xian 710061,China The 1st Research Department,Shaanxi Applied Physical Chemistry Research Institute,Xian 710061,China

会议类型: 国际会议

会议名称: 2012 International Symposium on Safety Science and Technology (2012安全科学与技术国际会议)

会议地点: 南京

会议语种:英文

页码: 562-566

在线出版日期: 2012-10-23（万方平台首次上网日期，不代表论文的发表时间）