公开(公告)号：US11948700B2

公开(公告)日：2024-04-02

申请号：US17094850

申请日：2020-11-11

Applicant: Grant Charters ,  Sudesh Aggarwal

Inventor： Grant Charters ,  Sudesh Aggarwal

IPC: G21C19/20 ,  G01N1/08 ,  G01T7/02 ,  G21D1/00 ,  G01N33/20 ,  G21C17/06 ,  G21C19/02

CPC classification number: G21C19/20 ,  G01N1/08 ,  G01T7/02 ,  G21D1/003 ,  G01N33/20 ,  G21C17/06 ,  G21C19/02

Abstract: A method for collection of dry samples taken directly from a nuclear reactor core interior. Incremental samples of irradiated metal alloy components of the reactor core may be taken and collected in-situ using a specialized metal-cutting drill bit having a hollow tungsten carbide sampling cutting head, in conjunction with an angled sampling gantry. The drill bit body has an interior airflow passage in hermetic communication with a filter located in a glove box. Air holes are formed through a face of the cutting head. A vacuumed airflow through the airflow passage and at the cutting head causes a sample of any of metal chips, filings, and dust to be obtained directly from the reactor core by being pulled through the air holes and into the airflow passage and ultimately into the filter. A collected sample may be analyzed for radionuclides and radioactivity level.

公开(公告)号：US06966236B2

公开(公告)日：2005-11-22

申请号：US10412066

申请日：2003-04-10

Applicant: Grant Jones Charters ,  Sudesh Aggarwal

Inventor： Grant Jones Charters ,  Sudesh Aggarwal

IPC: G01N1/08 ,  G01N33/38 ,  G01N23/00 ,  G01T7/00 ,  G01T7/02

CPC classification number: G01N1/08 ,  G01N33/383

Abstract: Disclosed is a method and system to characterize the contamination levels of bulk materials, the method comprises drilling into the material, sampling material from the drill point at predetermined intervals, and analyzing the sampled material. Such an embodiment may be accomplished by using a drill with a specialized cutting and sampling head, drill bits, a sample collection units and a vacuum pump. The embodiment in conjunction with portable radiometric instruments produces a profile of radiological or chemical contamination through the material being studied.

Abstract translation: 公开了一种表征散装材料的污染水平的方法和系统，该方法包括钻入材料中，以预定间隔从钻孔采样材料，并分析采样的材料。 这种实施例可以通过使用具有专门的切割和采样头，钻头，样品收集单元和真空泵的钻头来实现。 结合便携式辐射仪器的实施例通过正在研究的材料产生放射性或化学污染的轮廓。