SE1550799A1 - Startup / shutdown hydrogen injection system for boiling water reactors (bwrs), and method thereof - Google Patents
Startup / shutdown hydrogen injection system for boiling water reactors (bwrs), and method thereof Download PDFInfo
- Publication number
- SE1550799A1 SE1550799A1 SE1550799A SE1550799A SE1550799A1 SE 1550799 A1 SE1550799 A1 SE 1550799A1 SE 1550799 A SE1550799 A SE 1550799A SE 1550799 A SE1550799 A SE 1550799A SE 1550799 A1 SE1550799 A1 SE 1550799A1
- Authority
- SE
- Sweden
- Prior art keywords
- hydrogen
- bwr
- pressure
- reactor
- support system
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/02—Devices or arrangements for monitoring coolant or moderator
- G21C17/022—Devices or arrangements for monitoring coolant or moderator for monitoring liquid coolants or moderators
- G21C17/0225—Chemical surface treatment, e.g. corrosion
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/08—Regulation of any parameters in the plant
- G21D3/10—Regulation of any parameters in the plant by a combination of a variable derived from neutron flux with other controlling variables, e.g. derived from temperature, cooling flow, pressure
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/28—Arrangements for introducing fluent material into the reactor core; Arrangements for removing fluent material from the reactor core
- G21C19/30—Arrangements for introducing fluent material into the reactor core; Arrangements for removing fluent material from the reactor core with continuous purification of circulating fluent material, e.g. by extraction of fission products deterioration or corrosion products, impurities, e.g. by cold traps
- G21C19/303—Arrangements for introducing fluent material into the reactor core; Arrangements for removing fluent material from the reactor core with continuous purification of circulating fluent material, e.g. by extraction of fission products deterioration or corrosion products, impurities, e.g. by cold traps specially adapted for gases
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/40—Arrangements for preventing occurrence of critical conditions, e.g. during storage
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D1/00—Details of nuclear power plant
- G21D1/04—Pumping arrangements
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Description
doing so Would not allow hydrogen dissolution for efficient transport to the recirculation piping and/or reactor internals. Because IGSCC corrosion is more prevalent at lower operating temperatures (of about 200 °F to about 450 °F, during reactor startup / heat-up to about 5% power), the reactor (and the reactor support systems) is at greater risk during startup and shutdoWn modes, thereby exacerbating the effects that are caused by an inability to inject hydrogen into the conventional injection points 2 during reactor startup and shutdown modes.
SUMMARY OF INVENTION
[0005] Example embodiments provide a startup/shutdoWn hydrogen injection system (and associated method) for injecting hydrogen into BWR reactor support systems during periods of reactor startup and shutdoWn. Because the reactor (and the reactor support systems) experience temperatures and pressures that vary greatly as the reactor cycles through startup and shutdoWn modes (as a result of the reactor heat-up and cool-down), the hydrogen injection system provides hydrogen at a variable pressure that may match the operating pressures of these support systems at any period of time. Because the hydrogen injection system provides hydrogen to reactor support systems that also operate at potentially high pressures, the hydrogen injection system may boost the pressure of hydrogen beyond pressure levels normally associated With conventional HWC systems.
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] The above and other features and advantages of example embodiments Will become more apparent by describing in detail, example embodiments With reference to the attached draWings. The accompanying draWings are intended to depict example embodiments and should not be interpreted to limit the intended scope of the claims. The accompanying draWings are not to be considered as draWn to scale unless explicitly noted.
[0007] FIG. l is a piping and instrument (P&ID) diagram of a conventional hydrogen Water chemistry (HWC) system;
[0008] FIG. 2 is a P&ID diagram of a startup/shutdoWn hydrogen injection system, in accordance With an example embodiment; and
[0009] FIG. 3 is a ?owchart of a method of making and using a startup/shutdown hydrogen injection system, in accordance With an example embodiment.
DETAILED DESCRIPTION OF THE IN VENTION
[0010] Detailed example embodiments are disclosed herein. However, specific structural and functional details disclosed herein are merely representative for purposes of describing example embodiments. Example embodiments may, however, be embodied in many alternate forms and should not be construed as lirnited to only the embodiments set forth herein.
[0011] Accordingly, while example embodiments are capable of various modifications and alternative forms, embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that there is no intent to lirnit example embodiments to the particular forms disclosed, but to the contrary, example embodiments are to cover all modifications, equivalents, and alternatives falling within the scope of example embodiments. Like numbers refer to like elements throughout the description of the figures.
[0012] It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be lirnited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
[0013] It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present. Other Words used to describe the relationship between elements should be interpreted in a like fashion (e.g., "between" versus "directly between", "adjacent" versus "directly adjacent", etc.).
[0014] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises", "comprising,", "includes" and/or "including", when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
[0015] It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may in fact be executed substantially concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
[0016] FIG. 2 is a P&ID diagram of a startup/shutdown hydrogen injection system , in accordance with an example embodiment. The system may include one or more hydrogen sources. For instance, an optional dedicated hydrogen gas source 32 may be provided for the hydrogen injection system 30. The dedicated hydrogen gas source 32 may be small hydrogen gas bottles, a hydrogen gas truck, or liquid storage containing hydrogen. Alternative to a dedicated hydrogen gas source 32 (or, in addition to a dedicated hydrogen gas source 32), a connection 20 may be provided which may connect to an existing HWC system l (see optional connection points 20 on FIG. l, which may, for instance, connect to HWC system l either upstream or downstream of air-operated valve 14, and inside or outside of the plant wall).
[0017] If a connection 20 between an existing HWC system l and the startup/shutdown hydrogen injection system 30 is used to supply hydrogen, flow control equipment may be provided on the connection 20. For instance, a pressure control valve 34, a pressure transmitter 36, a local ?ow indicator 38, a ?ow control valve 40 and an air-operated valve 42 may be provided in the connection line 20 to control the ?owrate and pressure of hydrogen coming from the existing HWC system l into the startup/shutdown hydrogen injection system 30. A shutoff valve 44 may also be included to shut-off the flow of hydrogen into the hydrogen injection system 30.
[0018] Whether a connection between an existing HWC system l and the startup/shutdown hydrogen injection system 30 is used, or whether a dedicated hydrogen gas source 32 for the hydrogen injection system 30 is used, a hydrogen filter 46 may be provided to filter hydrogen gas prior to any pressurization of the hydrogen.
[0019] The hydrogen injection system 30 may further include a hydrogen gas booster 48 that may significantly increase the pressure of hydrogen which is to be injected into hydrogen injection point 50. The hydrogen gas booster 48 may be hydraulic or air-driven (pneumatic), and may be capable of increasing hydrogen pressure to any of a wide range of pressures, varying from about 0 psig to about l,l00 psig. By providing the hydrogen gas booster 48, the hydrogen injection system 30 may provide hydrogen to reactor support systems that experience a reactor water ?ow (at potentially high operating pressures of about l,l00 psig, and operating temperatures as low as about 200 °F when oxygen concentration in the reactor water is relatively elevated) during reactor startup and/or shutdown conditions (reactor “shutdown” including 4 reactor scrams, hot/standby and/or hot/shutdown mødes). For instance, hydrogen injection point 50 may include injections points in reactor support systems such as the reactor water cleanup (RWCU) return line or the feedwater recirculation lines of the BWR. Because these example reactor support systems experience reactor water ?ow during reactor startup and/or shutdown, and because these systems experience a wide range of pressures as the reactor cycles through startup and/or shutdown, the hydrogen gas booster 48 is particularly well equipped in increasing hydrogen pressure that is appropriate for these example service points.
[0020] The hydrogen gas booster 48 may be located downstream of the ?ow controls (including any one of the pressure control valve 34, pressure transmitter 36, flow indicator 38, flow control valve 40 and air operated valve 42), as doing so allows the ?ow control equipment to be a lower pressure class (and thereby less expensive). The hydrogen gas booster 48 may be pneumatically operated via a plant service air 56 connection. A pressure control valve 58 may be used to control the pressure of service air entering the hydrogen gas booster 48. An air filter may be used to filter the inlet air. Service air shutoff valves 62a/62b may be included in the air inlet line to close the air inlet line (to service the hydrogen gas booster 48, for instance). The hydrogen gas booster 48 may include a air ?ow control valve 72 to throttle the air ?ow to the booster to subsequently increase the hydrogen pressure out of the booster 48. The ?ow control valve 72 may be automatically or manually controlled.
[0021] A number of system shut-off valves 54a-54g may be provided to manage hydrogen ?ow through desired portions of the system 30 for added flexibility. For instance, when hydrogen is being injected to systems requiring relatively lower pressure, the hydrogen gas booster 48 may not be required. In such a scenario, if the conventional hydrogen source 4 (FIG. l) is being used to supply hydrogen to injection point 50, shutoff valves 54c, 54e and 54f may be closed, while shutoff valves 54d and 54g may be opened. Alternatively, dedicated hydrogen gas source 32 may be used to supply lower-pressure hydrogen by closing shutoff valves 54b, 54e and 54f (to bypass hydrogen gas booster 48), and opening shutoff valves 54a, 54c, 54d and 54g to hydrogen in injection point 50.
[0022] In scenarios where higher-pressure hydrogen service is desired, shutoff valve 54b may be opened, allowing hydrogen from hydrogen source 4 (through opened shutoff valve 54c) or hydrogen source 32 (through opened shutoff valve 54a) to enter the hydrogen gas booster 48. Hydrogen leaving the hydrogen gas booster 48 may be directed to hydrogen injection point 50 through shutoff valves 54e, 54f and 54g.
[0023] Local pressure indicators 64a-64c may be included to confirm the operating pressure of hydrogen and/or service air within the system. Especially in the case of high pressure hydrogen injection points 50, a check valve 66 may be included in the hydrogen injection line 50 to ensure that ?uids from the high pressure systems to not backup into the hydrogen injection system.
[0024] The startup/shutdown hydrogen injection system 30 may be provided on two separate skids 30a/30b for convenience, with the relatively lower pressure hydrogen equipment being predominantly included on one skid 30a and the relatively higher pressure hydrogen equipment being predominantly included on the other skid 30b.
[0025] A safety-relief valve 68 may be provided on the hydrogen gas booster 48 to vent hydrogen (to vent line 52) at times when the hydrogen gas booster 48 may become over- pressurized. Purge connections 70 throughout the system 30 may also be provided for maintenance and safety purposes.
[0026] FIG. 3 is a ?owchart of a method of making and using a startup/shutdown hydrogen injection system 30, in accordance with an example embodiment. The method may include a step S80 of ?uidly connecting at least one hydrogen source to a BWR reactor support system in operation during periods of reactor startup and/or shutdown. This may be accomplished, for instance, by providing piping or tubing between the hydrogen source and the BWR reactor support system. It should be understood that a support system which is “in operation” during startup and/or shutdown relates to a system which provides a reactor water ?uid ?ow through the system during periods when the reactor is starting up and shutting down (thereby offering a transport medium for the injected hydrogen to then be transported to the recirculation piping and/or reactor internals during startup and/or shutdown modes).
[0027] The method may further include a step S82 of directing a hydrogen flow from the at least one hydrogen source to the reactor support system. This may be accomplished, for instance, by opening valve connections in piping / tubing located between the hydrogen source and the reactor support system. The opening of the valve(s) may be accomplished via a controller, such as PLC 60 (see FIG. 2).
[0028] The method may further include a step S84 of regulating a pressure of the hydrogen flow from the at least one hydrogen source to the reactor support system, based on an operating pressure of the reactor support system. Specifically, the pressure of the hydrogen flow may be regulated to match the operating pressure of the reactor support system, with the understanding that the operating pressure may change while the reactor cycles through the startup and/or shutdown modes. The regulating of the pressure of the hydrogen ?ow may be accomplished via a controller, such as PLC 60 (see FIG. 2), which may compare a measured pressure at hydrogen injection point 50 against measured pressures at the pressure transmitter 36 or pressure indicator 64c (for instance) in order to regulate the pressure of the hydrogen being directed to the hydrogen injection point 50.
[0029] The hydrogen injection system l may include a programmable logic controller (PLC) and/or data acquisition system 60 that may be used to determine the rate and pressure for supplying hydrogen to injection point 50 (based upon a measure of the required injection point 50 pressure). Therefore, the PLC and/or data acquisition system 60 may be in communication with the control hardware shown in both the lower and higher pressure skids 30a/30b (not all connections shown in FIG. 2). The PLC and/or data acquisition system 60 may also control the hydrogen gas booster 48 and any system valves within the hydrogen injection system 30.
[0030] EXample embodiments having thus been described, it will be obvious that the same may be Varied in many ways. Such Variations are not to be regarded as a departure from the intended spirit and scope of example embodiments, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
Claims (22)
1. l. A method of injecting hydrogen into a Boiling Water Reactor (BWR) support system during reactor startup and/or shutdoWn modes to mitigate Inter-Granular Stress Corrosion Cracking (IGSCC), comprising: ?uidly connecting at least one hydrogen source to the BWR support system during at least one of a reactor startup mode and a reactor shutdoWn mode, the BWR support system being in operation during the reactor startup and shutdoWn modes; directing a hydrogen ?oW from the at least one hydrogen source to the BWR support system; and regulating a pressure of the hydrogen ?oW based upon an operating pressure of the BWR support system.
2. The method of claim 1, Wherein the BWR support system experiences a reactor Water ?uid ?oW through the BWR support system during the reactor startup and shutdoWn modes.
3. The method of claim 2, Wherein the BWR support system is one of a Reactor Water Cleanup (RWCU) return line and a Feedwater Recirculation line.
4. The method of claim 1, Wherein the regulating of the pressure of the hydrogen ?oW includes matching the pressure of the hydrogen flow to the operating pressure of the BWR support system, the operating pressure of the BWR support system being Variable during the reactor startup and shutdown modes.
5. The method of claim 4, further comprising: boosting the pressure of the hydrogen ?ow using a hydrogen booster.
6. The method of claim 5, Wherein the hydrogen booster is one of a hydraulically-driven and a pneumatically-driven booster.
7. The method of claim 5, wherein the hydrogen booster is configured to boost the pressure of the hydrogen flow to a Variable pressure of up to 1,100 psig.
8. The method of claim 5, further comprising: controlling a ?owrate of the hydrogen ?ow via ?ow controls, the ?ow controls being located upstream of the hydrogen booster.
9. The method of claim 8, wherein the ?ow controls are a lower pressure class than the hydrogen booster.
10. The method of claim 1, wherein the at least one hydrogen source is one of a hydrogen gas bottle, a hydrogen gas truck and a liquid hydrogen storage structure.
11. ll. The method of claim l, wherein the BWR support system experiences ?uid operating temperatures as low as about 200 °F and ?uid operating pressures as high as 1,100 psig during the reactor startup and shutdown modes.
12. A system, comprising: a hydrogen injection system fluidly connected to a BWR support system, the hydrogen injection system including, a hydrogen source, ?ow control equipment, pressure control equipment, the BWR support system being a system that operates during a reactor startup mode and a reactor shutdown mode, the pressure control equipment configured to regulate a pressure of a hydrogen ?ow between the hydrogen source and the BWR support system based upon an operating pressure of the BWR support system.
13. The system of claim 12, wherein the BWR reactor support system experiences a reactor water ?uid ?ow through the BWR support system during the reactor startup and shutdown modes.
14. The system of claim 12, wherein the BWR support system is one of a Reactor Water Cleanup (RWCU) retum line and a Feedwater Recirculation line.
15. The system of claim 12, wherein the pressure control equipment is further configured to match the pressure of the hydrogen flow to the operating pressure of the BWR support system, the operating pressure of the BWR support system being Variable during the reactor startup and shutdown modes.
16. The system of claim 15, wherein the hydrogen injection system further comprises: a hydrogen booster configured to boost the pressure of the hydrogen ?ow.
17. The system of claim 16, wherein the hydrogen booster is one of a hydraulically-driven and a pneumatically-driven booster.
18. The system of claim 16, wherein the hydrogen booster is configured to boost the pressure of the hydrogen flow to a Variable pressure of up to 1,100 psig.
19. The system of claim 16, wherein the flow control equipment is located upstream of the hydrogen booster.
20. The system of claim 19, wherein the flow control equipment is a lower pressure class than the hydrogen booster.
21. The system of claim 12, wherein the hydrogen source is one of a hydrogen gas bottle, a hydrogen gas truck and a liquid hydrogen storage structure. 10
22. The system of claim 12, Wherein the BWR support system experiences ?uid Operating temperatures as low as about 200 °F and ?uid Operating pressures as high as 1,1000 psig during the reactor startup and shutdown modes. 11
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/724,474 US10229761B2 (en) | 2012-12-21 | 2012-12-21 | Startup/shutdown hydrogen injection system for boiling water reactors (BWRS), and method thereof |
| PCT/US2013/073801 WO2014099436A1 (en) | 2012-12-21 | 2013-12-09 | Startup / shutdown hydrogen injection system for boiling water reactors and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE1550799A1 true SE1550799A1 (sv) | 2015-06-12 |
| SE541241C2 SE541241C2 (en) | 2019-05-14 |
Family
ID=49877045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE1550799A SE541241C2 (en) | 2012-12-21 | 2013-12-09 | Startup / shutdown hydrogen injection system for boiling water reactors (BWRs), and method thereof |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US10229761B2 (sv) |
| JP (3) | JP2016502102A (sv) |
| CH (1) | CH709318B1 (sv) |
| ES (1) | ES2546928B2 (sv) |
| SE (1) | SE541241C2 (sv) |
| WO (1) | WO2014099436A1 (sv) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9335296B2 (en) | 2012-10-10 | 2016-05-10 | Westinghouse Electric Company Llc | Systems and methods for steam generator tube analysis for detection of tube degradation |
| CN104299666A (zh) * | 2014-08-26 | 2015-01-21 | 上海舜华新能源系统有限公司 | 一种超微流量的高压氢气精确注气系统及注气方法 |
| CN106887265B (zh) * | 2017-03-14 | 2018-05-15 | 国核电力规划设计研究院有限公司 | 一种球床模块式高温气冷堆的启停堆系统 |
| US11935662B2 (en) | 2019-07-02 | 2024-03-19 | Westinghouse Electric Company Llc | Elongate SiC fuel elements |
| BR112021023157B8 (pt) * | 2019-07-03 | 2023-03-21 | Framatome Gmbh | Reator de água pressurizada e método de operação de um reator de água pressurizada |
| CA3151605C (en) | 2019-09-19 | 2023-04-11 | Westinghouse Electric Company Llc | Apparatus for performing in-situ adhesion test of cold spray deposits and method of employing |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3663725A (en) | 1970-04-23 | 1972-05-16 | Gen Electric | Corrosion inhibition |
| FR2253254B1 (sv) * | 1973-11-29 | 1977-12-16 | Rigollot Georges | |
| JPS54116595A (en) | 1978-03-03 | 1979-09-10 | Hitachi Ltd | Preventing stress corrosion crack in nuclear reactor tubing |
| JPS54126894A (en) | 1978-03-10 | 1979-10-02 | Toshiba Corp | Suppression of concentration of radioactive corrosion products in cooling water of nuclear power plant |
| SE461818B (sv) | 1988-09-23 | 1990-03-26 | Asea Atom Ab | Saett att tillfoera vaetgas till reaktorvattnet under drift av en kokvattenreaktor |
| JPH06249996A (ja) | 1993-02-26 | 1994-09-09 | Toshiba Corp | 沸騰水型原子炉における炉心構造材の腐食防止方法 |
| JP2905705B2 (ja) | 1994-10-25 | 1999-06-14 | 神鋼パンテツク株式会社 | 原子炉水の酸素濃度制御装置 |
| WO1997037358A1 (fr) | 1996-03-29 | 1997-10-09 | Hitachi, Ltd. | Centrale a energie nucleaire |
| JPH1090485A (ja) | 1996-09-12 | 1998-04-10 | Hitachi Ltd | 原子炉水の溶存酸素濃度制御システム及び原子炉水の溶存酸素濃度制御方法 |
| JP3667525B2 (ja) | 1998-04-17 | 2005-07-06 | 株式会社東芝 | 蒸気発生器附帯型原子力発電用タービン設備 |
| JP3941392B2 (ja) | 1999-03-26 | 2007-07-04 | 株式会社日立製作所 | 原子炉運転方法 |
| WO2002078011A1 (en) * | 2001-03-26 | 2002-10-03 | Pebble Bed Modular Reactor (Proprietary) Limited | A nuclear power plant and a method of operating the same |
| JP4717388B2 (ja) | 2004-07-15 | 2011-07-06 | 東京電力株式会社 | 沸騰水型原子力発電プラントの水素注入方法 |
| JP4776219B2 (ja) | 2004-12-09 | 2011-09-21 | 株式会社東芝 | 原子力発電プラントとその耐食性被膜形成方法および原子炉運転方法 |
| US8105563B2 (en) * | 2009-12-28 | 2012-01-31 | Ge-Hitachi Nuclear Energy Americas Llc | Methods of controlling hydrogen concentrations in an offgas system of a nuclear reactor by passive air injection |
| JP2011149764A (ja) | 2010-01-20 | 2011-08-04 | Hitachi-Ge Nuclear Energy Ltd | 原子力プラント構成部材の線量低減方法 |
| US20120260693A1 (en) * | 2011-04-15 | 2012-10-18 | Demore Daniel D | Compression method and air separation |
| JP5430621B2 (ja) * | 2011-08-10 | 2014-03-05 | Ｃｋｄ株式会社 | ガス流量検定システム及びガス流量検定ユニット |
| NO335469B1 (no) * | 2011-09-29 | 2014-12-15 | Aker Subsea As | Pumpesystem for vanninjeksjon ved høyt trykk |
-
2012
- 2012-12-21 US US13/724,474 patent/US10229761B2/en active Active
-
2013
- 2013-12-09 CH CH00899/15A patent/CH709318B1/de unknown
- 2013-12-09 ES ES201590060A patent/ES2546928B2/es active Active
- 2013-12-09 JP JP2015549447A patent/JP2016502102A/ja active Pending
- 2013-12-09 SE SE1550799A patent/SE541241C2/en unknown
- 2013-12-09 WO PCT/US2013/073801 patent/WO2014099436A1/en active Application Filing
-
2019
- 2019-01-03 US US16/239,063 patent/US10964436B2/en active Active
-
2020
- 2020-02-19 JP JP2020026392A patent/JP2020073940A/ja active Pending
-
2022
- 2022-07-07 JP JP2022110005A patent/JP7422186B2/ja active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CH709318B1 (de) | 2017-11-15 |
| ES2546928A2 (es) | 2015-09-29 |
| JP2016502102A (ja) | 2016-01-21 |
| JP2020073940A (ja) | 2020-05-14 |
| JP7422186B2 (ja) | 2024-01-25 |
| SE541241C2 (en) | 2019-05-14 |
| WO2014099436A1 (en) | 2014-06-26 |
| ES2546928R1 (es) | 2016-03-16 |
| JP2022125296A (ja) | 2022-08-26 |
| US20200027591A1 (en) | 2020-01-23 |
| US10964436B2 (en) | 2021-03-30 |
| US10229761B2 (en) | 2019-03-12 |
| US20140177777A1 (en) | 2014-06-26 |
| ES2546928B2 (es) | 2018-11-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10964436B2 (en) | System for hydrogen injection for boiling water reactors (BWRs) during startup / shutdown | |
| MX2009007769A (es) | Control de espira cerrada para dosificacion de fluidos de sistema de escape. | |
| DE602008003203D1 (de) | Verstopfungsbeurteilungsvorrichtung für ein reduktionsmitteleinspritzventil und verstopfungsbeurteilungsverfahren für ein reduktionsmitteleinspritzventil | |
| CA2880915C (en) | Method for performing a pressure test on a tank and tank filling apparatus | |
| CN210424507U (zh) | 燃气调压撬 | |
| CN205877703U (zh) | 液化天然气潜液泵卸车装置 | |
| CN205781978U (zh) | 化学剂加注橇 | |
| US11267689B2 (en) | Mobile distribution station having auxiliary delivery system | |
| JP2017129463A (ja) | 原子炉格納容器漏えい率検査用の圧縮空気ブロー構造 | |
| RU127915U1 (ru) | Стенд для испытания и настройки предохранительных клапанов | |
| CN210572160U (zh) | 一种评价实验用低温液体的稳定进液系统 | |
| CN114843556A (zh) | 一种氢气循环泵和引射器性能测试系统 | |
| RU2716659C1 (ru) | Мобильный узел подачи газа | |
| JP2008243563A (ja) | 燃料電池システム | |
| US11846357B2 (en) | Safety flow obstruction holder | |
| KR101486549B1 (ko) | 산업용가스 자동제어충전 시스템 | |
| CN219546822U (zh) | 一种加氧稳压柜及加氧设备 | |
| CN216746906U (zh) | 一种新型燃油取样系统 | |
| CN105333309A (zh) | 一种城镇燃气供气设备 | |
| KR101308863B1 (ko) | 원자력발전소의 증기계통 밸브성능 시험장치용 포화증기 공급시스템 | |
| CN216477581U (zh) | 一种混气装置以及燃气轮机系统 | |
| CN211504658U (zh) | 一种安全阀寿命测试装置 | |
| CN217468507U (zh) | 一种氢气循环泵和引射器性能测试系统 | |
| CN210197004U (zh) | 一种氮气泄压缓冲装置 | |
| CN105134313B (zh) | 汽轮机上抽汽阀的控制装置 |