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1. 发明申请

US20210287815A1 VALVE ASSEMBLY WITH ISOLATION VALVE VESSEL 有权
公开(公告)号：US20210287815A1
公开(公告)日：2021-09-16
申请号：US17332030
申请日：2021-05-27
申请人： BWXT mPower, Inc.
发明人： John D. Malloy, III , Michael J. Edwards
IPC分类号： G21C19/04 , G21C9/00 , G21C13/036 , G21C13/10
摘要： Apparatuses for reducing or eliminating Type 1 LOCAs in a nuclear reactor vessel. A nuclear reactor including a nuclear reactor core comprising a fissile material, a pressure vessel containing the nuclear reactor core immersed in primary coolant disposed in the pressure vessel, and an isolation valve assembly including, an isolation valve vessel having a single open end with a flange, a spool piece having a first flange secured to a wall of the pressure vessel and a second flange secured to the flange of the isolation valve vessel, a fluid flow line passing through the spool piece to conduct fluid flow into or out of the first flange wherein a portion of the fluid flow line is disposed in the isolation valve vessel, and at least one valve disposed in the isolation valve vessel and operatively connected with the fluid flow line.

2. 发明申请

US20200350084A1 PASSIVE TECHNIQUES FOR LONG-TERM REACTOR COOLING 审中-公开
公开(公告)号：US20200350084A1
公开(公告)日：2020-11-05
申请号：US16933498
申请日：2020-07-20
申请人： BWXT mPower, Inc.
发明人： John D. Malloy, III , Billy E. Bingham , Ronald C. Watson , Jason G. Williams , Matthew W. Ales , James B. Inman , Sean M. Boyle
IPC分类号： G21C15/18 , G21C1/32 , G21C15/26
摘要： In a pressurized water reactor (PWR), emergency core cooling (ECC) responds to depressurization due to a vessel penetration break at the top of the pressure vessel by draining water from a body of water through an injection line into the pressure vessel. A barrier operates concurrently with the ECC to suppress flow of liquid water from the pressure vessel out the vessel penetration break. The barrier may comprise one or more of: (1) an injection line extension passing through the central riser to drain water into the central riser; (2) openings in a lower portion of a central riser to shunt some upward flow from the central riser into a lower portion of the downcomer annulus; and (3) a surge line providing fluid communication between a pressurizer volume at the top of the pressure vessel and the remainder of the pressure vessel which directs water outboard toward the downcomer annulus.

3. 发明授权

US10672524B2 Passive integral isolation valve 审中-公开
公开(公告)号：US10672524B2
公开(公告)日：2020-06-02
申请号：US14877048
申请日：2015-10-07
申请人： BWXT mPower, Inc.
发明人： John D. Malloy, III
IPC分类号： G21C7/32 , G21C15/243 , G21D3/04 , G21C13/02 , F16K1/38 , G21C19/307 , G21C15/14 , G21C1/32 , F16K15/18
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.

4. 发明授权

US10147506B2 Conformal core cooling and containment structure 有权
公开(公告)号：US10147506B2
公开(公告)日：2018-12-04
申请号：US14244222
申请日：2014-04-03
申请人： BWXT mPower, Inc.
发明人： John D. Malloy, III , Michael J. Edwards , Tyler A. Edwards
IPC分类号： G21C9/016 , G21C11/08
摘要： A nuclear reactor includes a pressure vessel and a nuclear reactor core comprising fissile material disposed inside the pressure vessel at the bottom of the pressure vessel. A secondary core containment structure includes a containment basket comprising insulation with a maximum stable temperature of at least 2200K cladded by steel. The bottom of the pressure vessel and the nuclear reactor core are disposed inside the containment basket with the containment basket spaced apart from the bottom of the pressure vessel by a clearance gap. The containment basket may comprise zirconia insulation cladded by steel. In some embodiments the clearance gap between the containment basket and the bottom of the pressure vessel is no larger than one meter. The secondary core containment structure may further comprise conduits arranged to inject water into the clearance gap between the containment basket and the bottom of the pressure vessel.

5. 发明申请

US20160180974A1 PASSIVE INTEGRAL ISOLATION VALVE 审中-公开
标题翻译：被动集成隔离阀
公开(公告)号：US20160180974A1
公开(公告)日：2016-06-23
申请号：US14877048
申请日：2015-10-07
申请人： BWXT mPower, Inc.
发明人： John D. Malloy, III
IPC分类号： G21C15/243 , F16K15/18
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透的凸缘。阀被设置在凸缘内部或从凸缘突出到容器穿透中。阀包括阀座和可动阀构件，其定位成使得反应堆压力容器内的压力将可动阀构件推压到阀座上以关闭阀。阀门组件还包括具有入口的增压室，通过该入口，增压室可以被加压以向可移动阀构件施加压力，该可动阀构件促使可移动阀构件远离阀座以打开阀。气室可以部分地由可动阀构件的表面限定。阀组件优选地不包括阀致动器。

6. 发明申请

US20220367075A1 PASSIVE TECHNIQUES FOR LONG-TERM REACTOR COOLING 有权
公开(公告)号：US20220367075A1
公开(公告)日：2022-11-17
申请号：US17831043
申请日：2022-06-02
申请人： BWXT mPower, Inc.
发明人： John D. Malloy, III , Billy E. Bingham , Ronald C. Watson , Jason G. Williams , Matthew W. Ales , James B. Inman , Sean M. Boyle
IPC分类号： G21C15/18 , G21C1/32 , G21C15/26 , G21C1/09
摘要： In a pressurized water reactor (PWR), emergency core cooling (ECC) responds to depressurization due to a vessel penetration break at the top of the pressure vessel by draining water from a body of water through an injection line into the pressure vessel. A barrier operates concurrently with the ECC to suppress flow of liquid water from the pressure vessel out the vessel penetration break. The barrier may comprise one or more of: (1) an injection line extension passing through the central riser to drain water into the central riser; (2) openings in a lower portion of a central riser to shunt some upward flow from the central riser into a lower portion of the downcomer annulus; and (3) a surge line providing fluid communication between a pressurizer volume at the top of the pressure vessel and the remainder of the pressure vessel which directs water outboard toward the downcomer annulus.

7. 发明授权

US11373768B2 Refueling water storage tank (RWST) with tailored passive emergency core cooling (ECC) flow 有权
公开(公告)号：US11373768B2
公开(公告)日：2022-06-28
申请号：US14169192
申请日：2014-01-31
申请人： BWXT mPower, Inc.
发明人： Ronald C. Watson , John D. Malloy, III
IPC分类号： G21C15/18
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.

8. 发明授权

US11355253B2 Passive techniques for long-term reactor cooling 有权
公开(公告)号：US11355253B2
公开(公告)日：2022-06-07
申请号：US16933498
申请日：2020-07-20
申请人： BWXT mPower, Inc.
发明人： John D. Malloy, III , Billy E. Bingham , Ronald C. Watson , Jason G. Williams , Matthew W. Ales , James B. Inman , Sean M. Boyle
IPC分类号： G21C15/18 , G21C1/09 , G21C1/32 , G21C15/26
摘要： In a pressurized water reactor (PWR), emergency core cooling (ECC) responds to depressurization due to a vessel penetration break at the top of the pressure vessel by draining water from a body of water through an injection line into the pressure vessel. A barrier operates concurrently with the ECC to suppress flow of liquid water from the pressure vessel out the vessel penetration break. The barrier may comprise one or more of: (1) an injection line extension passing through the central riser to drain water into the central riser; (2) openings in a lower portion of a central riser to shunt some upward flow from the central riser into a lower portion of the downcomer annulus; and (3) a surge line providing fluid communication between a pressurizer volume at the top of the pressure vessel and the remainder of the pressure vessel which directs water outboard toward the downcomer annulus.

9. 发明申请

US20170337994A1 VALVE ASSEMBLY WITH ISOLATION VALVE VESSEL 审中-公开
公开(公告)号：US20170337994A1
公开(公告)日：2017-11-23
申请号：US15663376
申请日：2017-07-28
申请人： BWXT mPower, Inc.
发明人： John D. Malloy, III , Michael J. Edwards
IPC分类号： G21C19/04 , G21C9/00 , G21C13/10 , G21C13/036 , G21C19/30
CPC分类号： G21C19/04 , G21C9/00 , G21C13/036 , G21C13/10 , G21C19/30 , Y02E30/40
摘要： Apparatuses for reducing or eliminating Type 1 LOCAs in a nuclear reactor vessel. A nuclear reactor including a nuclear reactor core comprising a fissile material, a pressure vessel containing the nuclear reactor core immersed in primary coolant disposed in the pressure vessel, and an isolation valve assembly including, an isolation valve vessel having a single open end with a flange, a spool piece having a first flange secured to a wall of the pressure vessel and a second flange secured to the flange of the isolation valve vessel, a fluid flow line passing through the spool piece to conduct fluid flow into or out of the first flange wherein a portion of the fluid flow line is disposed in the isolation valve vessel, and at least one valve disposed in the isolation valve vessel and operatively connected with the fluid flow line.

10. 发明授权

US11043310B2 Valve assembly with isolation valve vessel 有权
公开(公告)号：US11043310B2
公开(公告)日：2021-06-22
申请号：US15663376
申请日：2017-07-28
申请人： BWXT mPower, Inc.
发明人： John D. Malloy, III , Michael J. Edwards
IPC分类号： G21C19/04 , G21C9/00 , G21C13/036 , G21C13/10 , G21C19/30
摘要： Apparatuses for reducing or eliminating Type 1 LOCAs in a nuclear reactor vessel. A nuclear reactor including a nuclear reactor core comprising a fissile material, a pressure vessel containing the nuclear reactor core immersed in primary coolant disposed in the pressure vessel, and an isolation valve assembly including, an isolation valve vessel having a single open end with a flange, a spool piece having a first flange secured to a wall of the pressure vessel and a second flange secured to the flange of the isolation valve vessel, a fluid flow line passing through the spool piece to conduct fluid flow into or out of the first flange wherein a portion of the fluid flow line is disposed in the isolation valve vessel, and at least one valve disposed in the isolation valve vessel and operatively connected with the fluid flow line.

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