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    RADIATION HARDENED ULTRASONIC CLEANING SYSTEM
    1.
    发明申请
    RADIATION HARDENED ULTRASONIC CLEANING SYSTEM 审中-公开

    公开(公告)号：WO2017203451A3

    公开(公告)日：2017-11-30

    申请号：PCT/IB2017/053067

    申请日：2017-05-24

    Applicant: DOMINION ENGINEERING, INC.

    Inventor： ARGUELLES, David ,  PELLMAN, Abby Margaret ,  WEBER, Florian

    IPC: G21F9/00 ,  B08B3/12 ,  G21F9/28

    Abstract: In a submersible ultrasonic cleaning system for use in highly radioactive environments (e.g., cleaning radiated nuclear fuel assemblies), a bond between energy producing transducers and an radiating wall is strengthened with a polyurethane adhesive such as Permabond PT326, or 3M DP-190 adhesive. In various diagnostic tests, one or more of the transducers are operated in an energy-transmitting mode while one or more other transducers are operated in an energy- detecting mode to detect a weakened transducer/wall bond and/or acoustic conditions of the working fluid.

    RADIATION HARDENED ULTRASONIC CLEANING SYSTEM
    2.
    发明申请
    RADIATION HARDENED ULTRASONIC CLEANING SYSTEM 审中-公开
    辐射硬化超声波清洗系统

    公开(公告)号：WO2017203451A2

    公开(公告)日：2017-11-30

    申请号：PCT/IB2017/053067

    申请日：2017-05-24

    Applicant: DOMINION ENGINEERING, INC.

    Inventor： ARGUELLES, David ,  PELLMAN, Abby Margaret ,  WEBER, Florian

    IPC: G21F9/00

    Abstract: In a submersible ultrasonic cleaning system for use in highly radioactive environments (e.g., cleaning radiated nuclear fuel assemblies), a bond between energy producing transducers and an radiating wall is strengthened with a polyurethane adhesive such as Permabond PT326, or 3M DP-190 adhesive. In various diagnostic tests, one or more of the transducers are operated in an energy-transmitting mode while one or more other transducers are operated in an energy- detecting mode to detect a weakened transducer/wall bond and/or acoustic conditions of the working fluid.

    Abstract translation: 在用于高放射性环境（例如，清洁辐射核燃料组件）的潜水式超声波清洁系统中，能量产生换能器与辐射壁之间的结合用聚氨酯粘合剂如Permabond PT326 或3M DP-190粘合剂。 在各种诊断测试中，一个或多个换能器以能量传输模式操作，而一个或多个其他换能器以能量检测模式操作以检测工作流体的弱化换能器/壁结合和/或声学条件

    IMPROVED SCALE CONDITIONING AGENTS
    4.
    发明申请
    IMPROVED SCALE CONDITIONING AGENTS 审中-公开

    公开(公告)号：WO2003000464A3

    公开(公告)日：2003-01-03

    申请号：PCT/US2002/019353

    申请日：2002-06-18

    Applicant: DOMINION ENGINEERING, INC.

    Inventor： ROOTHAM, Michael, W. ,  VARRIN, Robert, D., Jr.

    IPC: C11D1/66

    Abstract: The present invention provides an improved scale conditioning composition and method that results in improved dissolution and disruption of tube scale, hardened sludge and other deposits composed primarily of highly densified magnetite such as those found in heat exchange vessels. After treatment with the advanced scale conditioning composition, these magnetite rich deposits are more easily removed using known and commercially available high pressure hydro-mechanical cleaning techniques. The present invention further provides effective cleaning in a short period of time and at relatively low temperatures, while reducing the amount of waste produced and reducing the resulting corrosion of carbon and low alloy steel components within the steam generator during the cleaning process.

    MODULAR WATER PURIFICATION SYSTEM FOR NUCLEAR POWER PLANTS
    5.
    发明申请
    MODULAR WATER PURIFICATION SYSTEM FOR NUCLEAR POWER PLANTS 审中-公开

    公开(公告)号：WO2018195265A1

    公开(公告)日：2018-10-25

    申请号：PCT/US2018/028286

    申请日：2018-04-19

    Applicant: DOMINION ENGINEERING, INC.

    Inventor： ARGUELLES, David ,  LITTLE, Michael J. ,  VARRIN, Robert D.

    IPC: C02F9/00 ,  G21C3/33 ,  G21C3/334 ,  G21C19/307 ,  G21F9/04 ,  C02F1/00 ,  C02F1/20 ,  C02F1/36 ,  C02F1/38 ,  C02F1/42 ,  C02F1/463 ,  C02F101/00 ,  G21C19/07

    Abstract: A modular water purification system for a nuclear power plant includes a plurality of modules that may be selectively connected together directly or through the use of intermediary adapters in a plurality of arrangements. The modules may include a pump module, a FOSAR module, a particulate filtration module, a cross-flow filtration module, a degasification module, and/or a demineralization module, among other possible modules. The modules may have common interfaces so that they can be interconnected (directly or through intermediary adapters) in a variety of configurations for different purposes within the context of the nuclear power plant (e.g., filtering pool water; collecting large objects via vacuuming). Various modules may have form factors and/or mounting structures that are similar enough to the fuel assemblies of the plant that (1) the plant's fuel assembly handling equipment can grab, move, and reposition the modules, and/or (2) the modules may be stored in the fuel pool's storage rack.

    SUPPRESSION OF RADIONUCLIDE DEPOSITION ON NUCLEAR POWER PLANT COMPONENTS
    6.
    发明申请
    SUPPRESSION OF RADIONUCLIDE DEPOSITION ON NUCLEAR POWER PLANT COMPONENTS 审中-公开

    公开(公告)号：WO2018027030A3

    公开(公告)日：2018-02-08

    申请号：PCT/US2017/045295

    申请日：2017-08-03

    Applicant: DOMINION ENGINEERING, INC.

    Inventor： LITTLE, Michael J. ,  MARKS, Charles R.

    IPC: C01G9/00 ,  F01P7/00 ,  G21C1/02 ,  G21C3/22 ,  G21C7/32 ,  G21C17/02 ,  G21D3/14

    Abstract: A method for depositing zinc on the surfaces of a coolant loop of a nuclear power plant includes: providing within a portion of the coolant loop a treatment solution comprising zinc and optionally one or more noble metals and/or reducing agent(s); allowing the treatment solution to remain in the portion for a treatment period; and removing the treatment solution from the portion. According to various embodiments, an average temperature of the treatment solution over the course of the treatment period is less than 150ºC or 100ºC. According to various embodiments, an instantaneous temperature of the treatment solution remains below 150ºC or 100ºC throughout the treatment period. The zinc deposition treatment may be applied (1) before the plant is first put into power-generating operation or (2) during an outage following power-generating operation and optionally following a chemical decontamination to remove any oxides formed on surfaces of a coolant loop during prior power operation period(s).

    SUPPRESSION OF RADIONUCLIDE DEPOSITION ON NUCLEAR POWER PLANT COMPONENTS
    7.
    发明申请
    SUPPRESSION OF RADIONUCLIDE DEPOSITION ON NUCLEAR POWER PLANT COMPONENTS 审中-公开
    放射性核素在核电站组件上的沉积抑制

    公开(公告)号：WO2018027030A2

    公开(公告)日：2018-02-08

    申请号：PCT/US2017/045295

    申请日：2017-08-03

    Applicant: DOMINION ENGINEERING, INC.

    Inventor： LITTLE, Michael J. ,  MARKS, Charles R.

    IPC: G21D3/08

    Abstract: A method for depositing zinc on the surfaces of a coolant loop of a nuclear power plant includes: providing within a portion of the coolant loop a treatment solution comprising zinc and optionally one or more noble metals and/or reducing agent(s); allowing the treatment solution to remain in the portion for a treatment period; and removing the treatment solution from the portion. According to various embodiments, an average temperature of the treatment solution over the course of the treatment period is less than 150ºC or 100ºC. According to various embodiments, an instantaneous temperature of the treatment solution remains below 150ºC or 100ºC throughout the treatment period. The zinc deposition treatment may be applied (1) before the plant is first put into power-generating operation or (2) during an outage following power-generating operation and optionally following a chemical decontamination to remove any oxides formed on surfaces of a coolant loop during prior power operation period(s).

    Abstract translation: 用于在核电站的冷却剂回路的表面上沉积锌的方法包括：在冷却剂回路的一部分内提供包含锌和任选的一种或多种贵金属的处理溶液，和/或 还原剂; 允许处理溶液在该部分中保留一段治疗期; 并从该部分除去处理溶液。 根据各种实施方案，治疗期间治疗溶液的平均温度小于150℃或100℃。 根据各种实施方案，处理溶液的瞬时温度在整个治疗期间保持低于150℃或100℃。 锌沉积处理可以应用（1）在电站首次进入发电操作之前或（2）在发电操作之后的停电期间和任选地在化学去污之后去除在冷却剂回路的表面上形成的任何氧化物 在以前的电力运行期间。

    METHODS OF REUSING A CLEANING SOLUTION
    8.
    发明申请
    METHODS OF REUSING A CLEANING SOLUTION 审中-公开
    重新清洁溶液的方法

    公开(公告)号：WO2014018787A1

    公开(公告)日：2014-01-30

    申请号：PCT/US2013/052117

    申请日：2013-07-25

    Applicant: DOMINION ENGINEERING, INC.

    Inventor： VARRIN, Robert D. ,  LITTLE, Michael J.

    IPC: G21F9/00 ,  C23G1/00 ,  F28G9/00

    CPC classification number: B08B9/027 ,  B08B9/08 ,  C11D11/0041 ,  C23G1/36 ,  F22B37/483 ,  F28G9/00 ,  F28G2015/006 ,  G21F9/004

    Abstract: An aqueous cleaning solution that has been previously used to remove deposits from a nuclear steam generator (or other vessel) is reused after being transferred from the steam generator into an external vessel. The spent cleaning solution may be reconditioned and reused in a further cleaning of the same steam generator or a different steam generator. The different cleanings being accomplished by the cleaning solution may be of the same type or different types (e.g., iron oxide removal and/or copper removal).

    Abstract translation: 先前用于从核蒸汽发生器（或其他容器）去除沉积物的水性清洁溶液在从蒸汽发生器转移到外部容器中之后被重新使用。 废清洁溶液可以被再修复并重新用于进一步清洁相同的蒸汽发生器或不同的蒸汽发生器。 由清洁溶液完成的不同清洁可以是相同类型或不同类型（例如除去氧化铁和/或铜）。

    HIGH THROUGHPUT ULTRASONIC CLEANER FOR IRRADIATED NUCLEAR FUEL ASSEMBLIES
    9.
    发明申请
    HIGH THROUGHPUT ULTRASONIC CLEANER FOR IRRADIATED NUCLEAR FUEL ASSEMBLIES 审中-公开
    用于辐射核燃料组件的高通量超声波清洗机

    公开(公告)号：WO2004012204A2

    公开(公告)日：2004-02-05

    申请号：PCT/US2003/023485

    申请日：2003-07-29

    Applicant: DOMINION ENGINEERING, INC.

    Inventor： GROSS, David ,  ARGUELLES, David ,  LIPFORD, Brian

    IPC: G21C

    CPC classification number: G21F9/28

    Abstract: A passive assembly for operating two cleaning chambers using a single filtration system having a flow diverter assembly is disclosed. The flow diverter assembly is actuated by a fuel assembly when a fuel assembly is inserted into the cleaning chamber. The flow diverter assembly acts so that each cleaning chamber is supplied with suction flow whenever there is a fuel assembly in the cleaning chamber. When a cleaning chamber is empty, the flow diverter acts to block the suction flow from the filtration system, forcing suction flow through the opposite cleaning chamber. The flow diverter only provides suction head to a cleaning chamber when there is a fuel assembly in the cleaning chamber. When both cleaning chambers are empty, suction pressure from the pump increases to the point that the flow diverters in both chambers open sufficiently to maintain flow through the pumps and prevent the pumps from cavitating.

    Abstract translation: 公开了一种使用具有分流器组件的单个过滤系统来操作两个清洁室的被动组件。 当燃料组件插入到清洁室中时，分流器组件由燃料组件致动。 流动分流器组件的作用是使得每当清洁室中存在燃料组件时，每个清洁室被供应吸力。 当清洁室为空时，分流器用于阻止来自过滤系统的吸入流动，迫使吸力流过相对的清洁室。 当在清洁室中存在燃料组件时，流动分流器仅将清洁头提供到清洁室。 当两个清洁室都为空时，来自泵的吸入压力增加到两个室中的分流器足够敞开以保持流过泵的流动并防止泵气蚀。

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