Several problem of γ-tagged cleaning ball in petroleum pipe

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- Several problem of γ-tagged cleaning ball in petroleum pipe
- Nuclear Techniques Vol. 09, Issue 12, (1986)
- 作者机构：
  
  复旦大学
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：28 October 1985，
  
  Published：1986-12
- 稿件说明：
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Zhizhen Yang, Jianqiu Jing, Jianhua Yu, et al. Several problem of γ-tagged cleaning ball in petroleum pipe[J]. Nuclear techniques, 1986, 09(12): 38-39,59,57.
DOI：

Zhizhen Yang, Jianqiu Jing, Jianhua Yu, et al. Several problem of γ-tagged cleaning ball in petroleum pipe[J]. Nuclear techniques, 1986, 09(12): 38-39,59,57. DOI：

输油管道在铺设过程中，常有泥、沙、石块等各种杂物落入管内。在输油前，如不清除这些杂物，在输油过程中，就会引起油管阀门的切换失效。故在油管铺好后，一般都用高压水推动一个和油管内径相同的橡皮球

[1]

（清管球）或清管器（沈阳东方管道仪器技术开发公司生产），沿油管清除管中污物。过去，有的油管在清管时由于清管球被“卡死”在管中，不得不在油管上钻孔找球，这样不但费工费时，并且引起油管的损伤。

Several technical problems of γ-tagged cleaning ball on petroleum pipe are summarized. Among them

the half-thickness of cobalt-60 γ-rays in wet soil

the responsiveness of some Chinese γ-radiation dosimeters to moving γ-source and some distance-protection measures in operation of 1.2×10

Bq cobalt-60 source in situ of petroleum pipe are reported.

I. Rahman et al . , Introduction to nuclear engineering , Robert E. Krieger Publishing Company, Inc . USA . 1981 , p. 332 .

Б. M. Злобинский ， Безоиасность работ c радиоактивными вешествами ， Москва ， 1961 ，p. 293 .

中国科学院原子能所，放射性同位素应用实验方法，科学出版社， 1961 年，第 64 页。

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