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公开(公告)号：US2870075A
公开(公告)日：1959-01-20
申请号：US58078345
申请日：1945-03-03
申请人： LEVERETT MILES C , HOWE JOHN P
发明人： LEVERETT MILES C , HOWE JOHN P
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公开(公告)号：US2849246A
公开(公告)日：1958-08-26
申请号：US59747645
申请日：1945-06-04
申请人： LINZELL STANLEY M , DORCY DAN J
发明人： LINZELL STANLEY M , DORCY DAN J
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公开(公告)号：US11984231B2
公开(公告)日：2024-05-14
申请号：US17554967
申请日：2021-12-17
申请人： NuScale Power, LLC
发明人： Michael Keller , Ross I. Snuggerud
IPC分类号： G21C19/32 , G21C1/08 , G21C1/32 , G21C13/02 , G21C17/10 , G21C19/02 , G21C19/18 , G21C19/20 , G21C19/07
CPC分类号： G21C19/18 , G21C1/08 , G21C1/32 , G21C13/02 , G21C17/10 , G21C19/02 , G21C19/20 , G21C19/32 , G21C19/07 , Y02E30/30
摘要： An in-core instrumentation system for a reactor module includes a plurality of in-core instruments connected to a containment vessel and a reactor pressure vessel at least partially located within the containment vessel. A reactor core is housed within a lower head that is removably attached to the reactor pressure vessel, and lower ends of the in-core instruments are located within the reactor core. The in-core instruments are configured such that the lower ends are concurrently removed from the reactor core as a result of removing the lower head from the reactor pressure vessel.
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公开(公告)号：US20180261345A1
公开(公告)日：2018-09-13
申请号：US15903111
申请日：2018-02-23
CPC分类号： G21C17/07 , G01M3/24 , G01M3/243 , G01M3/3209 , G21C5/02 , G21C19/02 , G21C19/207
摘要： The single rod ultrasonic leak detection tool will be used to detect leaking fuel rods by evaluation if there is water inside the rod. The test will be performed by moving one fuel rod between two ultrasonic transducer oriented in a pitch/catch configuration. The detection tool uses ultrasonic transducers as the primary method to detect leaking fuel rods. Two probes are preferably positioned near the fuel rod in a pitch/catch or transmitting/receiving configuration. One probe 36 sends the signal into the rod and the other probe of a set of probes receives the signal. An evaluation of the received signal is performed in various embodiments, to determine leak tightness of the fuel rod. In various aspects, two sets of probes may be utilized so that measurements can be taken on both sides of the fuel rod.
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公开(公告)号：US20180190400A1
公开(公告)日：2018-07-05
申请号：US15739484
申请日：2016-07-15
摘要： A method for decommission of a nuclear power plant includes: a step of removing fuel from a reactor vessel and storing the fuel in a fuel storage pool; a step of carrying the fuel out from the fuel storage pool; a step of, after removing the fuel from the reactor vessel, taking a reactor internal structure inside the reactor vessel out to a work pool storing water and being positioned above the reactor vessel, and decommissioning the reactor internal structure under the water stored in the work pool; a step of carrying the decommissioned reactor internal structure out from the work pool; and a step of, after carrying the reactor internal structure out from the work pool, draining the water from the work pool. The step of taking out and decommissioning the reactor internal structure is started before completion of carrying out of the fuel from the fuel storage pool.
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公开(公告)号：US09959943B2
公开(公告)日：2018-05-01
申请号：US14042927
申请日：2013-10-01
CPC分类号： G21C7/00 , B23P6/00 , G21C19/02 , G21C19/14 , G21C19/207 , G21Y2002/201 , G21Y2004/30 , G21Y2004/40 , G21Y2004/50 , G21Y2004/501 , Y10T29/4973 , Y10T29/49735
摘要： The method includes repairing a nuclear reactor, where the reactor includes one or more submerged lines welded to one or more support brackets. The method involves removing a damaged section of the one or more submerged lines, and replacing the damaged section without welding.
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公开(公告)号：US20170275141A1
公开(公告)日：2017-09-28
申请号：US15608225
申请日：2017-05-30
申请人： Greg Weston
发明人： Greg Weston
CPC分类号： B66C17/26 , B66C17/00 , B66C19/00 , G21C19/02 , G21C19/207 , G21C19/32 , G21D1/02 , Y02E30/40
摘要： Methods for nuclear power plant maintenance which reduces outage time while a polar crane is maintained. In some examples, the method includes the steps of placing an auxiliary crane on a set of rails of a polar crane, using the auxiliary crane to perform maintenance work while the polar crane is maintained, and removing the auxiliary crane after maintenance work on the polar crane is completed. In some further examples, the method includes placing a second auxiliary crane on the set of rails. Still in other example, bridge motors are used to turn the rails, allowing the auxiliary crane to reach every area of the plant floor.
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公开(公告)号：US20170213608A1
公开(公告)日：2017-07-27
申请号：US15004128
申请日：2016-01-22
申请人： NuScale Power, LLC
发明人： Michael KELLER , Ross T. SNUGGERUD
CPC分类号： G21C19/18 , G21C1/08 , G21C1/32 , G21C13/02 , G21C17/10 , G21C19/02 , G21C19/07 , G21C19/20 , G21C19/32 , Y02E30/40
摘要： An in-core instrumentation system for a reactor module includes a plurality of in-core instruments connected to a containment vessel and a reactor pressure vessel at least partially located within the containment vessel. A reactor core is housed within a lower head that is removably attached to the reactor pressure vessel, and lower ends of the in-core instruments are located within the reactor core. The in-core instruments are configured such that the lower ends are concurrently removed from the reactor core as a result of removing the lower head from the reactor pressure vessel.
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49.发明授权公开(公告)号：US09601221B2
公开(公告)日：2017-03-21
申请号：US13263468
申请日：2010-06-08
申请人： Atsushi Sugiura , Takumi Hori , Kenji Nishikawa , Ken Onishi , Noriaki Shimonabe , Satoshi Tsuzuki , Ikuo Wakamoto
发明人： Atsushi Sugiura , Takumi Hori , Kenji Nishikawa , Ken Onishi , Noriaki Shimonabe , Satoshi Tsuzuki , Ikuo Wakamoto
CPC分类号： G21C19/02 , G21C13/00 , G21C19/207 , Y02E30/40
摘要： An opening and closing device that opens and closes an access port opened from a substantially cylindrical working platform disposed inside a reactor vessel and used to access a nozzle stub of the reactor vessel from the inside of the working platform, the opening and closing device includes: a cover that is slidable along an outer peripheral surface or an inner peripheral surface of the working platform from a closing position where the access port is closed to an opening position where the access port is opened; and moving device for sliding the cover.
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50.发明授权公开(公告)号：US09494312B2
公开(公告)日：2016-11-15
申请号：US14002818
申请日：2012-03-05
申请人： Jérôme Ambacher , Brice Massazza , Denis Pollier
发明人： Jérôme Ambacher , Brice Massazza , Denis Pollier
CPC分类号： F22B37/58 , F22B1/025 , F22B37/003 , G21C1/09 , G21C17/017 , G21C19/02 , G21C19/207 , Y02E30/40 , Y10T29/49815 , Y10T29/53987
摘要： A method for working on a defective heating element of a pressurizer comprising a tank lying flat along a longitudinal axis and elongate heating elements extending within the tank, and at least one spacer plate through which the heating elements pass and which is capable of maintaining a transverse spacing between the heating elements is provided. The method includes cutting at least one spacer plate around the heating element so as to detach said heating element from said spacer plate, and then extracting the heating element from the tank in one single piece.
摘要翻译： 一种用于对加压器的有缺陷的加热元件进行加工的方法，该加压器包括沿着纵向轴线平坦放置的罐和在罐内延伸的细长的加热元件，以及至少一个间隔板，加热元件通过该间隔板通过并且能够保持横向 提供加热元件之间的间隔。 该方法包括在加热元件周围切割至少一个间隔板，以便将所述加热元件从所述间隔板上分离，然后以一个单件的方式从罐中提取加热元件。
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