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1. 发明授权

US06252923B1 In-situ self-powered monitoring of stored spent nuclear fuel 有权
标题翻译：储存的乏核燃料的现场自供电监测
公开(公告)号：US06252923B1
公开(公告)日：2001-06-26
申请号：US09371720
申请日：1999-08-10
申请人： John M. Iacovino , Thomas V. Congedo , William A. Byers , Abdul R. Dulloo , Frank H. Ruddy , David F. McLaughlin , Arnold H. Fero , Brandon Damon Thomas , John G. Siedel
发明人： John M. Iacovino , Thomas V. Congedo , William A. Byers , Abdul R. Dulloo , Frank H. Ruddy , David F. McLaughlin , Arnold H. Fero , Brandon Damon Thomas , John G. Siedel
IPC分类号： G21C1706
CPC分类号： G21C17/06 , G21F5/06 , G21Y2002/502 , G21Y2004/304
摘要： Detectors are used to monitor the status of spent nuclear fuel storage containers non-invasively while they remain in storage casks. The detectors measure neutron flux and &ggr;-ray flux and may also measure temperature variations of the spent nuclear fuel. The measurements can be accomplished actively or passively, with minimal exposure of individuals to radiation fields or other hazardous conditions. Preferred neutron and &ggr;-ray detectors have a semiconductor active region that is resistant to neutron damage. Incipient structural failures may also be detected using measurements based on electrical continuity, with data being transmitted to an external pickup coil.
摘要翻译：检测器用于在残留在储存桶中时非侵入性地监测废核燃料储存容器的状态。检测器测量中子通量和γ射线通量，并且还可以测量废核燃料的温度变化。测量可以主动或被动地完成，个人对辐射场或其他危险状况的暴露最少。优选的中子和γ射线检测器具有耐中子损伤的半导体有源区。也可以使用基于电连续性的测量来检测初始结构故障，数据被传送到外部拾取线圈。

2. 发明授权

US5781602A PGNAA system for non-invasively inspecting RPV weld metal in situ, to determine the presence and amount of trace embrittlement-enhancing element 失效
标题翻译： PGNAA系统，用于非原位检测RPV焊接金属，以确定痕量脆化增强元素的存在和数量
公开(公告)号：US5781602A
公开(公告)日：1998-07-14
申请号：US649370
申请日：1996-05-17
申请人： Arnold H. Fero , Stanwood L. Anderson , Thomas V. Congedo , Abdul R. Dulloo , Francis H. Ruddy
发明人： Arnold H. Fero , Stanwood L. Anderson , Thomas V. Congedo , Abdul R. Dulloo , Francis H. Ruddy
IPC分类号： B23K31/12 , G01N23/222 , G21C17/003
CPC分类号： G01N23/222 , B23K31/12 , G21C17/003 , G21Y2002/204
摘要： Prompt Gamma Neuteon Activation Analysis (PGNAA) is employed to determined in situ the content of nickel, copper, or other embrittlement-enhancing elements within the weld metal joints of nuclear reactor pressure vessels.
摘要翻译：采用快速伽马激发分析法（PGNAA）来原位测定核反应堆压力容器焊缝金属接头内镍，铜或其他脆化增强元素的含量。

3. 发明授权

US07151815B2 Nonintrusive method for the detection of concealed special nuclear material 有权
标题翻译：非侵入性检测隐蔽特殊核材料的方法
公开(公告)号：US07151815B2
公开(公告)日：2006-12-19
申请号：US10818848
申请日：2004-04-06
申请人： Francis H. Ruddy , Abdul R. Dulloo , John G. Seidel , Thomas V. Congedo , Bojan Petrovic , Vefa N. Kucukboyaci
发明人： Francis H. Ruddy , Abdul R. Dulloo , John G. Seidel , Thomas V. Congedo , Bojan Petrovic , Vefa N. Kucukboyaci
IPC分类号： G21G1/06
CPC分类号： G01V5/0091
摘要： A method and associated apparatus for detecting concealed fissile, fissionable or special nuclear material in an article, such as a shipping container, is provided. The article is irradiated with a source of fast neutrons, and fast neutrons released by the fissile or fissionable material, if present, are detected between source neutron pulses. The method uses a neutron detector that can detect and discriminate fast neutrons in the presence of thermal neutrons and gamma radiation. The detector is able to process high count rates and is resistant to radiation damage, and is preferably a solid state neutron detector comprised of silicon carbide.
摘要翻译：提供了用于检测物品（例如运输容器）中的隐形裂变，可裂变或特殊核材料的方法和相关装置。用快中子源照射物品，在源中子脉冲之间检测由易裂变材料或可裂变材料释放的快中子（如果有的话）。该方法使用中子探测器，可以在存在热中子和γ辐射的情况下检测和区分快中子。检测器能够处理高计数率并且耐辐射损伤，并且优选是由碳化硅组成的固态中子检测器。

4. 发明授权

US06627898B2 Method and system for monitoring radiation and rejecting noise 有权
公开(公告)号：US06627898B2
公开(公告)日：2003-09-30
申请号：US09891781
申请日：2001-06-26
申请人： John G. Seidel , Francis H. Ruddy , Abdul R. Dulloo , Thomas V. Congedo
发明人： John G. Seidel , Francis H. Ruddy , Abdul R. Dulloo , Thomas V. Congedo
IPC分类号： G01T308
CPC分类号： G21C17/108
摘要： A method of monitoring a nuclear reactor includes monitoring the nuclear reactor with a plurality of radiation sensors having spaced apart attachments to a radiation hard cable; providing signal processing equipment at each end of the cable for processing signals from the radiation sensors; establishing signal time intervals based upon differences in time of arrival of signals from the radiation sensors to the signal processing equipment at each end of the cable; producing a plurality of output signals each of which has an amplitude proportional to a difference in time of arrival of a signal to the signal processing equipment at each end of the cable; and rejecting output signals which have a difference in time of arrival outside of the signal time intervals.

5. 发明授权

US5940460A Solid state neutron detector array 失效
标题翻译：固态中子探测器阵列
公开(公告)号：US5940460A
公开(公告)日：1999-08-17
申请号：US931084
申请日：1997-09-15
申请人： John G. Seidel , Frank H. Ruddy , Charles D. Brandt , Abdul R. Dulloo , Randy G. Lott , Ernest Sirianni , Randall O. Wilson
发明人： John G. Seidel , Frank H. Ruddy , Charles D. Brandt , Abdul R. Dulloo , Randy G. Lott , Ernest Sirianni , Randall O. Wilson
IPC分类号： G01T3/08 , G01T1/00
CPC分类号： G01T3/08
摘要： A neutron detector array is capable of measuring a wide range of neutron fluxes. The array includes multiple semiconductor neutron detectors. Each detector has a semiconductor active region that is resistant to radiation damage. In one embodiment, the array preferably has a relatively small size, making it possible to place the array in confined locations. The ability of the array to detect a wide range of neutron fluxes is highly advantageous for many applications such as detecting neutron flux during start up, ramp up and full power of nuclear reactors.
摘要翻译：中子探测器阵列能够测量广泛的中子通量。阵列包括多个半导体中子探测器。每个检测器具有耐辐射损伤的半导体有源区。在一个实施例中，阵列优选地具有相对小的尺寸，使得可以将阵列置于密闭的位置。阵列检测大范围的中子通量的能力对于许多应用是非常有利的，例如在启动，升温和核反应堆全功率期间检测中子通量。

6. 发明授权

US5726453A Radiation resistant solid state neutron detector 失效
标题翻译：耐辐射固态中子探测器
公开(公告)号：US5726453A
公开(公告)日：1998-03-10
申请号：US722388
申请日：1996-09-30
申请人： Randy G. Lott , Frank H. Ruddy , Abdul R. Dulloo
发明人： Randy G. Lott , Frank H. Ruddy , Abdul R. Dulloo
IPC分类号： G01T3/08
CPC分类号： G01T3/08
摘要： A radiation resistant solid state neutron detector is disclosed. The detector uses a neutron convertor material such as boron or lithium to react with neutrons to create charged particles that are received in a semiconductor active region of the detector. The active thickness of the detector is smaller than the range of the charged particles. Since most of the radiation damage produced by impinging charged particles occurs near the end of the range of the particles, displacement damage predominantly occurs outside of the active region. Although the charged particles pass through the semiconductor material, the particles cause electron excitation within the semiconductor material which is detected in the form of an electronic pulse. A preferred semiconductor material for the active region is silicon carbide. The detectors provide increased resistance to radiation damage, improve high temperature operation, and the ability to obtain real time measurements of neutron flux in reactor cavities and other previously inaccessible locations.
摘要翻译：公开了一种耐辐射固态中子探测器。检测器使用诸如硼或锂的中子转换器材料与中子反应以产生被接收在检测器的半导体有源区域中的带电粒子。检测器的有效厚度小于带电粒子的范围。由于通过撞击带电粒子产生的大部分辐射损伤发生在粒子范围的附近，所以位移损伤主要发生在有源区域之外。虽然带电粒子通过半导体材料，但是在电子脉冲形式检测的半导体材料内引起电子激发。用于有源区的优选半导体材料是碳化硅。检测器提供增加的对辐射损伤的抵抗力，改善高温操作，以及获得反应堆腔和其他先前无法接近的位置中的中子通量的实时测量的能力。

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