公开(公告)号：US09498802B2

公开(公告)日：2016-11-22

申请号：US13950764

申请日：2013-07-25

申请人： Dominion Engineering, Inc.

发明人： Robert D. Varrin, Jr. ,  Michael J. Little

IPC分类号： B08B9/00 ,  B08B9/027 ,  B08B9/08 ,  G21F9/00 ,  C23G1/36 ,  F28G9/00 ,  C11D11/00 ,  F22B37/48 ,  F28G15/00

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

摘要： 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).

摘要翻译： 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）。

公开(公告)号：US11469006B2

公开(公告)日：2022-10-11

申请号：US15765097

申请日：2017-08-03

申请人： DOMINION ENGINEERING, INC.

发明人： Michael J. Little ,  Charles R. Marks

IPC分类号： G21C17/022 ,  G21C19/28 ,  C23C22/68 ,  C23C30/00 ,  C23C22/77 ,  F01P7/00 ,  C23C20/02 ,  C23C22/60

摘要： 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 150° C. or 100° C. According to various embodiments, an instantaneous temperature of the treatment solution remains below 150° C. or 100° C. 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).

公开(公告)号：US09767927B2

公开(公告)日：2017-09-19

申请号：US13712586

申请日：2012-12-12

申请人： DOMINION ENGINEERING, INC.

发明人： Robert D. Varrin, Jr. ,  David Arguelles ,  Michael J. Little

IPC分类号： G21C19/40 ,  G21C3/32 ,  B01D46/10 ,  G21C5/02 ,  G21C19/307

CPC分类号： G21C3/3206 ,  B01D46/10 ,  G21C5/02 ,  G21C19/307 ,  Y02E30/40

摘要： A particulate removal apparatus and method are used to capture and remove particulates from nuclear reactor core coolant during normal operation. Bottom nozzle, particulate removal apparatus and top nozzle structures form an assembly sized to be installed in place of a nuclear fuel assembly. The particulate removal achieved reduces the inventory of corrosion product deposits, foreign objects and other particulates in the reactor coolant system. This in turn reduces activation or deposition of particulates on fuel cladding, with a corresponding improvement in fuel reliability and reduction in ex-core radiation fields.

公开(公告)号：US11198630B2

公开(公告)日：2021-12-14

申请号：US16493884

申请日：2018-04-19

申请人： DOMINION ENGINEERING, INC.

发明人： David Arguelles ,  Michael J. Little ,  Robert D. Varrin, Jr.

IPC分类号： C02F9/00 ,  C02F1/00 ,  C02F1/20 ,  C02F1/32 ,  C02F1/36 ,  C02F1/38 ,  C02F1/42 ,  C02F1/463 ,  F04D7/08 ,  F04D29/22 ,  G21C3/33 ,  G21C3/334 ,  G21C19/07 ,  G21C19/307 ,  C02F101/00

摘要： 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.