• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>2001 conference of Waste Management (WM);Annual Waste Management Symposium >MEASUREMENT OF THE URANIUM CONTENT OF INTERMEDIATE LEVEL WASTEFROM THE SELLAFIELD DRYPAC PLANT BY ACTIVE NEUTRON INTERROGATION
【24h】

MEASUREMENT OF THE URANIUM CONTENT OF INTERMEDIATE LEVEL WASTEFROM THE SELLAFIELD DRYPAC PLANT BY ACTIVE NEUTRON INTERROGATION

机译：活性中子含量法测定SELLAFIELD DRYPAC植物中中等含量铀的铀含量。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Sellafield DryPac Plant (SDP) is a new facility for the treatment of Intermediate LevelrnWaste (ILW), prior to long term storage in a future Nirex repository. A current Nirex requirementrnis that the fissile content of waste packages shall not exceed a predefined post closure caserncriticality limit. In order to police this limit the plutonium content of each SDP product drum willrnbe measured by Passive Neutron Coincidence Counting (PNCC), using a pair of custom-designedrnassay chambers. These instruments have already been assembled and subjected to works andrncustomer acceptance tests.rnIt has recently been decided to incorporate an active neutron interrogation capability into onernof the existing passive neutron monitors (PNM). This is intend ed to allow the fissile uraniumrncontent to be measured for selected drums, containing waste from particular streams, which arernknown to have a significant inventory of enriched uranium. Active neutron interrogation is hencernnecessary for these drums, to avoid the risk of unknowingly exceeding the criticality limit due torn235U.rnThis paper describes the modifications which are now being been made to one of the passivernneutron monitors, to incorporate a californium shuffler system, with a description of the physics andrnengineering design of the system. The proposed methodology for the shuffler calibration, usingrnsimulated waste matrices, is also described.
机译：Sellafield DryPac工厂（SDP）是一种用于处理中级废料（ILW）的新设施，可长期存储在未来的Nirex存储库中。 Nirex当前的一项要求是，废物包装的易裂变含量不得超过预定的封闭后案例临界度极限。为了控制此限制，将使用一对定制设计的测定室，通过被动中子符合计数（PNCC）测量每个SDP产品桶中的content含量。这些仪器已经组装好并接受了工作和客户验收测试。最近已决定将主动中子探询功能整合到现有被动中子监测器（PNM）中。这样做的目的是允许对选定鼓罐中的易裂变铀含量进行测量，其中包含来自特定流的废物，这些流已知有大量的浓缩铀。因此，对于这些感光鼓，必须进行主动中子询问，以避免由于235U而导致不知不觉地超过临界极限的风险。本文描述了现在正在对其中一台被动中子监测器进行的修改，其中包括一个sh洗机，并附有说明。系统的物理工程设计。还描述了使用模拟废物矩阵进行混洗器校准的建议方法。

著录项

  • 来源
  • 会议地点 Tucson AZ(US);Tucson AZ(US)
  • 作者

    J.P. Argyle; P.M.J. Chard; P.M.J. Chard; C.G. Wilkins; D. Whyke;

  • 作者单位

    Harwell Instruments Ltd.528.10 Unit 1,Harwell International Business Centre,Harwell,Didcot,.Oxfordshire 0X11 ORA United Kingdom;

    Harwell Instruments Ltd.528.10 Unit 1,Harwell International Business Centre,Harwell,Didcot,.Oxfordshire 0X11 ORA United Kingdom;

    Canberra Industries,800 Research Parkway,Meriden,CT 06450United States;

    Harwell Instruments Ltd.528.10 Unit 1,Harwell International Business Centre,Harwell,Didcot,.Oxfordshire 0X11 ORA United Kingdom;

    British Nuclear Fuels pic Risley Warrington WA3 6AS United Kingdom;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 废物处理与综合利用;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号