公开(公告)号：EP3526800A2

公开(公告)日：2019-08-21

申请号：EP17890828.1

申请日：2017-10-11

申请人： BWXT mPower, Inc.

发明人： BARGER, Earl Brian ,  FITZNER, Scott L. ,  LEE, Jeffrey T. ,  RIDGEWAY, Roger D.

IPC分类号： G21C3/10 ,  G21C3/07 ,  G21C3/06 ,  B23K9/028 ,  B23K11/093

公开(公告)号：EP2973595B1

公开(公告)日：2019-01-02

申请号：EP14810719.6

申请日：2014-03-17

申请人： BWXT mPower, Inc.

发明人： MALLOY, John, D., III ,  BINGHAM, Billy, E. ,  WATSON, Ronald, C. ,  WILLIAM, Jason, G. ,  ALES, Matthew, W. ,  INMAN, James, B. ,  BOYLE, Sean, M.

IPC分类号： G21C9/00 ,  G21C15/18

公开(公告)号：EP2745297B1

公开(公告)日：2018-09-12

申请号：EP12825470.3

申请日：2012-07-18

申请人： BWXT mPower, Inc.

发明人： ALES, Matthew, W. ,  WALTON, Lewis, A.

IPC分类号： G21C19/20 ,  G21C19/10

CPC分类号： G21C19/10 ,  G21C19/205

摘要： Refueling of a nuclear reactor (40) includes removing a fuel assembly (10). The removal method includes lowering a lifting tool (80) of a crane (44) onto a top of the fuel assembly. The lowered lifting tool including a plurality of downwardly extending elements (82) that surround and vertically overlap a portion (74) of a control rod assembly (70) extending above the top of the fuel assembly. The downwardly extending elements are locked with corresponding mating features (26) at the top of the fuel assembly to connect the lifting tool with the fuel assembly. The connected fuel assembly is moved into a spent fuel pool (42) using the crane, and the lifting tool is disconnected from the top of the fuel assembly by unlocking the downwardly extending elements from the corresponding mating features at the top of the fuel assembly.

公开(公告)号：EP3172735A4

公开(公告)日：2018-03-21

申请号：EP15825164

申请日：2015-07-21

申请人： BWXT MPOWER INC

发明人： KANUCH DAVID J ,  DIFILIPO PAUL P

IPC分类号： G21C15/14 ,  G21C9/00 ,  G21C13/02 ,  G21C13/10 ,  G21C15/10 ,  G21C15/18 ,  G21C15/24 ,  G21C19/30

CPC分类号： G21C15/182 ,  G21C9/00 ,  G21C13/02 ,  G21C13/10 ,  G21C19/30 ,  Y02E30/40

摘要： A nuclear reactor includes a nuclear reactor core comprising fissile material disposed in a reactor pressure vessel having vessel penetrations that exclusively carry flow into the nuclear reactor and at least one vessel penetration that carries flow out of the nuclear reactor. An integral isolation valve (IIV) system includes passive IIVs each comprising a check valve built into a forged flange and not including an actuator, and one or more active IIVs each comprising an active valve built into a forged flange and including an actuator. Each vessel penetration exclusively carrying flow into the nuclear reactor is protected by a passive IIV whose forged flange is directly connected to the vessel penetration. Each vessel penetration carrying flow out of the nuclear reactor is protected by an active IIV whose forged flange is directly connected to the vessel penetration. Each active valve may be a normally closed valve.

公开(公告)号：EP2973593A4

公开(公告)日：2017-01-25

申请号：EP14779191

申请日：2014-02-25

申请人： BWXT MPOWER INC

发明人： MALLOY III JOHN D ,  WATSON RONALD C

IPC分类号： G21C7/32 ,  G21C1/04 ,  G21C9/00

CPC分类号： G21C15/18 ,  Y02E30/40

摘要： A nuclear reactor comprises a pressure vessel containing a nuclear reactor core. A reactor core cooling system comprises a standpipe including a plurality of orifices in fluid communication with a refueling water storage tank (RWST) to drain water from the RWST into the standpipe, and an injection line configured to drain water from the standpipe to the pressure vessel. In some embodiments the standpipe is disposed in the RWST, while in other embodiments the standpipe is disposed outside of the RWST and cross-connection pipes connect the plurality of orifices with the RWST. The reactor core cooling system may further comprise a valve configured to control flow through one orifice of the plurality of orifices in fluid communication with the RWST based on water level in the standpipe. The valve may comprise a float valve having its float disposed in the standpipe.

公开(公告)号：EP2973595A4

公开(公告)日：2016-12-14

申请号：EP14810719

申请日：2014-03-17

申请人： BWXT MPOWER INC

发明人： MALLOY JOHN D III ,  BINGHAM BILLY E ,  WATSON RONALD C ,  WILLIAM JASON G ,  ALES MATTHEW W ,  INMAN JAMES B ,  BOYLE SEAN M

IPC分类号： G21C9/00 ,  G21C15/18

CPC分类号： G21C15/18 ,  G21C1/32 ,  G21C9/00 ,  Y02E30/40

公开(公告)号：EP2625692B1

公开(公告)日：2019-02-20

申请号：EP11831173.7

申请日：2011-09-15

申请人： BWXT mPower, Inc. ,  BWXT Nuclear Operations Group, Inc.

发明人： SHARGOTS, Scott, J. ,  DESANTIS, Paul, K. ,  MCLAUGHLIN, John, P. ,  ALES, Mathew, W.

IPC分类号： G21C7/10 ,  G21C7/12 ,  G21C7/20 ,  G21C7/117

公开(公告)号：EP2973593B1

公开(公告)日：2017-12-27

申请号：EP14779191.7

申请日：2014-02-25

申请人： BWXT mPower, Inc.

发明人： MALLOY III, John D ,  WATSON, Ronald C

IPC分类号： G21C15/18

CPC分类号： G21C15/18 ,  Y02E30/40

摘要： A nuclear reactor comprises a pressure vessel containing a nuclear reactor core. A reactor core cooling system comprises a standpipe including a plurality of orifices in fluid communication with a refueling water storage tank (RWST) to drain water from the RWST into the standpipe, and an injection line configured to drain water from the standpipe to the pressure vessel. In some embodiments the standpipe is disposed in the RWST, while in other embodiments the standpipe is disposed outside of the RWST and cross-connection pipes connect the plurality of orifices with the RWST. The reactor core cooling system may further comprise a valve configured to control flow through one orifice of the plurality of orifices in fluid communication with the RWST based on water level in the standpipe. The valve may comprise a float valve having its float disposed in the standpipe.

公开(公告)号：EP3204670A1

公开(公告)日：2017-08-16

申请号：EP15863135.8

申请日：2015-10-07

申请人： BWXT mPower, Inc.

发明人： MALLOY, III, John D.

IPC分类号： F16K1/12 ,  G21C13/02 ,  G21D3/04 ,  G21D3/06

CPC分类号： G21C15/243 ,  F16K1/385 ,  F16K15/186 ,  G21C1/32 ,  G21C13/02 ,  G21C15/14 ,  G21C19/307 ,  G21D3/04 ,  Y02E30/40

摘要： A valve assembly includes a flange connected to a vessel penetration of a reactor pressure vessel of a nuclear reactor. A valve is disposed inside the flange or protrudes from the flange into the vessel penetration. The valve includes a valve seat and a movable valve member positioned so that pressure inside the reactor pressure vessel urges the movable valve member against the valve seat to close the valve. The valve assembly further includes a plenum having an inlet via which the plenum can be pressurized to apply pressure to the movable valve member that urges the movable valve member away from the valve seat to open the valve. The plenum may be defined in part by a surface of the movable valve member. The valve assembly preferably does not include a valve actuator.

摘要翻译： 阀组件包括连接到核反应堆的反应堆压力容器的容器穿孔的法兰。 阀设置在法兰内部或从法兰突出到容器穿透部中。 该阀包括阀座和可动阀构件，该可动阀构件定位成使得反应堆压力容器内部的压力促使可动阀构件抵靠阀座以关闭阀。 所述阀组件还包括具有入口的气室，通过所述入口，所述气室可被加压以向所述可移动阀构件施加压力，所述可移动阀构件推动所述可移动阀构件远离所述阀座打开所述阀。 充气室可以部分地由可动阀构件的表面限定。 该阀组件优选不包括阀门致动器。

公开(公告)号：EP2973601A2

公开(公告)日：2016-01-20

申请号：EP14807958.5

申请日：2014-03-13

申请人： BWXT mPower, Inc.

发明人： INMAN, James ,  SHARGOTS, Scott ,  MCNULTY, James ,  REIFSCHNEIDER, Martin ,  SMITH, John

IPC分类号： G21C19/19 ,  G21C19/20 ,  G21C19/32

CPC分类号： G21D1/02 ,  B66C17/06 ,  G21C1/322 ,  G21C13/024 ,  G21C13/073 ,  G21C19/02 ,  G21C19/19 ,  G21C19/20 ,  G21C19/32 ,  Y02E30/40

摘要： A system for refueling a nuclear reactor is provided. The system includes a lower reactor vessel with a plurality of fuel rods and a plurality of control rods disposed therein, the lower reactor vessel further comprising an upper flange. An upper reactor vessel is provided which encloses a steam generator and a pressurizer, the upper reactor vessel further comprising a lower flange that matingly engages the upper flange of the lower reactor vessel. A transporter surrounds an outer surface of the upper reactor vessel, wherein the transporter is configured to translate the upper reactor vessel vertically toward and away from the lower reactor vessel and also to translate the upper reactor vessel horizontally toward or away from alignment with the lower reactor vessel.