公开(公告)号：WO2015109182A2

公开(公告)日：2015-07-23

申请号：PCT/US2015/011752

申请日：2015-01-16

Applicant: DOMINION ENGINEERING, INC.

Inventor： ARGUELLES, David ,  VARRIN, Robert D.

IPC: G21C17/07

CPC classification number: G21C17/07 ,  G21Y2002/204 ,  G21Y2004/40

Abstract: A method and system detects failures in nuclear fuel assemblies. A water treatment device degasses/removes fission gases from water used in the canister of a vacuum sipping device. A sipping procedure then detects a failure in a fuel assembly in the canister. The degassing improves a signal-to-noise ratio of the detector used during the sipping process, and improves the failure detection sensitivity of the system. Additionally and/or alternatively, gas may be recirculated through the canister water before the vacuum is applied so that fission gas concentration in the recirculating gas reaches a baseline equilibrium with the canister water. The vacuum is thereafter applied and the sipping procedure proceeds such that an increase in detected radioactivity over the baseline equilibrium indicates a leak in the fuel assembly.

Abstract translation: 一种方法和系统检测核燃料组件的故障。 水处理装置对真空吸水装置的罐中使用的水进行脱气/除去裂变气体。 然后，浸渍过程检测罐中的燃料组件中的故障。 脱气提高了在浸渍过程中使用的检测器的信噪比，并提高了系统的故障检测灵敏度。 另外和/或替代地，在施加真空之前，气体可以通过罐水再循环，使得再循环气体中的裂变气体浓度达到与罐水的基线平衡。 然后施加真空并且进行浸渍过程，使得检测到的放射性在基线平衡上的增加表示燃料组件中的泄漏。

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.

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

公开(公告)号：WO2008005870A3

公开(公告)日：2008-01-10

申请号：PCT/US2007/072542

申请日：2007-06-29

Applicant: DOMINION ENGINEERING INC. ,  COLLIN, Jean ,  JONES, Ryan ,  LUSZCZ, Joshua ,  KREIDER, Marc ,  PELLMAN, Aaron ,  VARRIN, Robert ,  ARGUELLES, David

Inventor： COLLIN, Jean ,  JONES, Ryan ,  LUSZCZ, Joshua ,  KREIDER, Marc ,  PELLMAN, Aaron ,  VARRIN, Robert ,  ARGUELLES, David

IPC: B08B3/00 ,  B08B9/00 ,  B08B3/12 ,  A47L5/38 ,  A47L15/00 ,  A47L9/00 ,  F02D7/00

Abstract: Provided area cleaning apparatus (100) and an associated method of using the disclosed apparatus wherein the apparatus utilizes one or more nozzles (118) configured to provide a coherent stream (106) of one or more cleaning fluids for removing accumulated fine particulate matter, sludge, from surfaces (120). The nozzles may be sized, arranged and configured to provide coherent streams that maintain the initial stream diameter for a substantial portion of the maximum dimension of the space being cleaned. The apparatus and method are expected to be particularly useful in the cleaning of heat exchangers incorporating a plurality of substantially vertical and narrowly spaced tubes (126) by directing cleansing streams along a plurality of intertube spaces (127).

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.

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。

公开(公告)号：WO2007011379A3

公开(公告)日：2007-01-25

申请号：PCT/US2005/033477

申请日：2005-09-20

Applicant: DOMINION ENGINEERING INC. ,  ARGUELLES, David ,  GROSS, David ,  LUSZCZ, Joshua, M.

Inventor： ARGUELLES, David ,  GROSS, David ,  LUSZCZ, Joshua, M.

IPC: B08B3/10

Abstract: The present invention relates to an improved ultrasonic cleaning system incorporating one or more improvements including, for example, permanently-attached flexible cables, waterproof bullkhead connectors provide on the transducers, submersible breakout assemblies, rigid cable guides and retainers, and at least one electronic switching unit whereby multiple ultrasonic transducers can be selectrively driven by a single ultrasonic generator. The improved ultrasolic cleaning system may be configured with various transducer arrangements including, for example, elongated transducers provided on a carrying frame or structure and a more planar array configuration that may be assembled from a plurality of transducer subassemblies.