球罐γ源偏心局部曝光的焦距选择
Focal setting of eccentricity partial exposure of gamma ray source photographic inspection for spherical tanks
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- DOI:
- 作者:
- 陈永才
Chen Yongcai
- 作者单位:
- 中油第六建设公司,广西桂林市 541004
Guilin, Guangxi
- 关键词:
- 球形罐;焊缝;伽马射线;射线照相检验;射线路径
Spherical tank;Welding seam;Gamma ray;Ray-photographic inspection;Ray path
- 摘要:
- 本文根据JB4730－94压力容器无损检测的有关规定推导出球罐γ源偏心局部曝光的焦距选择公式，并对关键性技术问题进行阐述分析，强调焦距选择的重要性和实际选择方法。
This paper gives the formula of focal setting of eccentricity partial exposure of gamma ray source photographic inspection for spherical tanks according to the specification J134730-94 for instction of pressure vessels, analysises the key technical problems and emphasizes the importance of focal setting.1996 ,4(4): 41-43 收稿日期：1996-1-5分类号：TE972