iNuclear Webinar on Disused Sealed Radioactive Sources

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iNuclear Webinar on Disused Sealed Radioactive Sources

On Saturday, iNuclear held its maiden webinar with Professor An Hongxiang as the speaker. Professor An Enlightened the participants on the management techniques of Disused Sealed Radioactive Sources. 本周六,iNuclear举办了创建以来的首次网络研讨会,我们非常荣幸地邀请到了安鸿翔教授作为本次研讨会的嘉宾。安教授就废弃密封放射源的管理技术与参会者进行了一场有趣的讨论。

本周六,iNuclear举办了创建以来的首次网络研讨会,我们非常荣幸地邀请到了安鸿翔教授作为本次研讨会的嘉宾。安教授就废弃密封放射源的管理技术与参会者进行了一场有趣的讨论。

Some important concepts

Sealed Radioactive Sources: Radioactive material that is permanently sealed in a capsule material that is permanently sealed in a capsule, or closely bonded, in a solid form and which is not exempt from regulatory control.  

密封放射源:永久密封在胶囊中的放射性物质,这种物质以固体形式永久密封在胶囊中,或紧密结合在一起,要受到监管控制。

Disused sealed radioactive sources: A sealed radioactive source which is no longer used, and is not intended to be used, for the practice for which an authorization has been granted.

废弃的密封放射源:已获授权的,但不再使用或不打算使用的密封放射源。

Authorization: A permission granted in a document by a regulatory  body to a natural or legal person who has submitted an application to manage a SRS. The authorization can take the form of a registration, a license of alternative effective legal control measures.

授权:当自然人或法人向监管机构申请管理一个密封放射源的时候,监管机构就会在一份相关文件中对此进行授权。授权可以采取登记、许可等其他有效的法律控制措施。

Orphan source: A SRS which is not under regulatory control, either because it has never been under regulatory control  or because has been abandoned, lost, misplaced, stolen or transferred without proper authorization.

孤儿源/失控源:一个未受到监管的密封放射源,可能是从未受到监管,也可能是被遗弃、丢失、错放、偷盗或者在未得到正确授权的情况下转移。

Conditioning: Those operations that produce a waste package suitable for handling, transport, storage and/or disposal. Conditioning may include enclosure of DSRS in disposal. Conditioning may include enclosure of DSRS in containers, and, if necessary, providing an overpack.

整备:整备是指那些生产适合处理、运输、储存和/或处置的废物包装的操作。整备包括对废弃密封放射源的密封管理,例如对废弃的密封放射源放进容器中,并在必要的时候提供一个外包装。

Storage: The holding of SRS in a facility that provides for its containment with the intention of retrieval.

贮存:将密封放射源存放在一个设施中,该设施为其提供贮存,并做好检索和记录。

Disposal: Emplacement of SRS.

处置:安置密封放射源。

Inappropriate Disposal: Emplacement of SRS in an appropriate facility without the intention of retrieval.

不当处置:虽然将密封放射源安置在了适当的设施中,但没有为其做好检索和记录。

During the lecture, we were made to understand how a sealed source can be classified as a disused sealed radioactive sources.
在讲座中,我们了解到了如何将密封源归类为废弃的密封放射源。             
Social Consequences of Radioactive Source Accident:
Exposed person become socially outcast
Psychological Problem
Public question to government’s management techniques
Intense media interest
Below are some basic findings:
•SRS at the end of their useful life have caused serious accidents
•SRS are often at their most vulnerable at the end of their useful life
•Majority of these incidents and accidents could have been avoided if SRS had been properly controlled
放射源事故的社会影响:
受到辐射的人会因为社会对于辐射的恐惧而被抛弃
心理问题             
公众对政府管理的质疑             
引发强烈的媒体关注
一些基本发现:
•有SRS在使用寿命结束时造成严重事故的情况发生             
•SRS在其使用寿命结束时,往往处于最脆弱的状态             
•如果SRS得到适当控制,大多数此类事件和事故是可以避免的

The IAEA is contributing enormously to its member state’s management techniques of DSRS (Disused Sealed Radioactive Source).

IAEA一直以来都在为其成员国的废弃密封放射源管理技术做出巨大的贡献。
At present, most countries in the world have participated in the code of conduct for the safety and security of radioactive source management, and manage their own radioactive sources and waste radioactive sources in accordance with the code. In addition, only a few countries have implemented the final disposal of waste radioactive sources. According to the characteristics of the waste radioactive sources, some of them are disposed near the surface and some of them are disposed in a medium depth. Generally, the borehole disposal is in the range of medium depth disposal, which is suitable for countries with only a small amount of waste and waste radioactive sources. At present, Malaysia has completed the preliminary work of borehole disposal and site selection, and the regulatory department is reviewing the site selection report; Ghana also plans to carry out the relevant work of borehole disposal.

目前,世界范围内,大部分国家参加了《放射源管理安全和保安行为准则》,并按照该准则要求管理本国的放射源和废放射源。另外,仅有少数国家实施了废放射源最终处置。根据废放射源特性,部分实施了近地表处置部分实施了中等深度处置。通常,钻孔处置属于中等深度处置范围,该处置方案适合于仅有少量废物和废放射源的国家。目前,马来西亚已完成钻孔处置选址前期工作,监管部门正在对选址报告进行审评;加纳也拟开展钻孔处置相关工作。

Few snapshots from the meeting

  • Writer: Priscilla Oforiwaa
  • Editor: Yvonne Sefakor Dzovor
  • Designers:Zhang Jing &Zhang Chao
  • Translator: Zhang Chao

2 Comments

  1. Oforiwaa says:

    Great article

  2. Celestine Segbefia says:

    Very educative article

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