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Keywords: hydrogen
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Proceedings Papers

Proc. ASME. ICONE31, Volume 2: Nuclear Fuel and Material, Reactor Physics and Transport Theory, and Fuel Cycle Technology, V002T02A007, August 4–8, 2024
Publisher: American Society of Mechanical Engineers
Paper No: ICONE31-132312
... causes corrosion and generates hydrogen in NaOH solutions, which are used to decontaminate the equipment in reprocessing plants. This has led to concerns about hydrogen embrittlement of the joints via hydrogen absorption. The authors examined the hydrogen absorption behavior of pure Ta immersed...
Proceedings Papers

Proc. ASME. ICONE31, Volume 2: Nuclear Fuel and Material, Reactor Physics and Transport Theory, and Fuel Cycle Technology, V002T02A064, August 4–8, 2024
Publisher: American Society of Mechanical Engineers
Paper No: ICONE31-136905
... Abstract When hydrogen penetrates into cladding tubes during operation of nuclear power plants, it may affect their mechanical stability. During the dry storage of spent nuclear fuel, the initially dissolved hydrogen precipitates as hydrides in the metallic matrix. This precipitation process...
Proceedings Papers

Proc. ASME. ICONE31, Volume 4: SMRs, Advanced Reactors, and Fusion, V004T04A049, August 4–8, 2024
Publisher: American Society of Mechanical Engineers
Paper No: ICONE31-135353
...Proceedings of the 2024 31st International Conference on Nuclear Engineering ICONE31 August 4-8, 2024, Prague, Czech Republic ICONE31-135353 A PRELIMINARY THERMODYNAMIC MODEL OF HYDROGEN GENERATION USING SOLID OXIDE ELECTROLYSIS CELL (SOEC) COUPLED WITH A HIGH-TEMPERATURE GAS-COOLED REACTOR Gao...
Proceedings Papers

Proc. ASME. ICONE29, Volume 5: Nuclear Safety, Security, and Cyber Security, V005T05A040, August 8–12, 2022
Publisher: American Society of Mechanical Engineers
Paper No: ICONE29-92375
... Abstract The safety control of hydrogen is a key safety issue that must be considered in the design of nuclear power plant. In order to better study the impact of hydrogen combustion and even deflagration on the nuclear power plant, the Handan Purification Equipment Research Institute has...
Proceedings Papers

Proc. ASME. ICONE29, Volume 15: Student Paper Competition, V015T16A006, August 8–12, 2022
Publisher: American Society of Mechanical Engineers
Paper No: ICONE29-88899
... Abstract There has been growing interest in nuclear hydrogen cogeneration recently since hydrogen has been considered one of the prospective substitutes to fossil fuels in the future, and nuclear energy can supply the energy required for hydrogen production efficiently and cleanly. The multi...
Proceedings Papers

Proc. ASME. ICONE29, Volume 2: Nuclear Fuel and Material, Reactor Physics and Transport Theory, and Fuel Cycle Technology, V002T02A015, August 8–12, 2022
Publisher: American Society of Mechanical Engineers
Paper No: ICONE29-90521
... out that PCMI failure threshold depends on total hydrogen content in cladding during RIA. In order to evaluate the performance of independently-developed zirconium alloy under RIA conditions, the mechanical behavior and the fracture of 2 different cladding tubes (CZ, and SR (Stress Relief) Zr-4...
Proceedings Papers

Proc. ASME. ICONE28, Volume 4: Student Paper Competition, V004T14A032, August 4–6, 2021
Publisher: American Society of Mechanical Engineers
Paper No: ICONE28-64359
... Abstract Nuclear Thermal Propulsion (NTP) for deep space exploration is promising. Hydrogen is employed as the propellant to enhance the maximized specific impulse of NTP. Whereas, the low boiling point and density of hydrogen lead to several issues related to safety and storage. From...
Proceedings Papers

Proc. ASME. ICONE21, Volume 3: Nuclear Safety and Security; Codes, Standards, Licensing and Regulatory Issues; Computational Fluid Dynamics and Coupled Codes, V003T06A030, July 29–August 2, 2013
Publisher: American Society of Mechanical Engineers
Paper No: ICONE21-15965
... A Review on Application of Technologies for Measuring Hydrogen Concentration in Containment Sha Luo Shaobo Wang Liang Qin Feng Pang The 718th Research Institute of China Shipbuilding Industry Corporation Handan, Hebei province, China ABSTRACT Hydrogen concentration measuring technologies...
Proceedings Papers

Proc. ASME. ICONE21, Volume 3: Nuclear Safety and Security; Codes, Standards, Licensing and Regulatory Issues; Computational Fluid Dynamics and Coupled Codes, V003T06A032, July 29–August 2, 2013
Publisher: American Society of Mechanical Engineers
Paper No: ICONE21-15970
... Severe Accident Hydrogen Measurement Catalytic Principle The hydrogen explosion in Fukushima nuclear accident seriously challenged the safety of nuclear power plants in the world. Therefore, strengthening hydrogen concentration measurement in containment has become very important...
Proceedings Papers

Proc. ASME. ICONE16, Volume 2: Fuel Cycle and High Level Waste Management; Computational Fluid Dynamics, Neutronics Methods and Coupled Codes; Student Paper Competition, 675-679, May 11–15, 2008
Publisher: American Society of Mechanical Engineers
Paper No: ICONE16-48227
.... Hydrogen absorption by zirconium alloy during corrosion process is the ageing mechanism of Zr-2.5% Nb fuel channel. When hydrogen concentration in fuel channel exceeds solubility limit, formation of hydrides under certain conditions can reduce resistance to brittle fracture and cause initiation...
Proceedings Papers

Proc. ASME. ICONE16, Volume 3: Thermal Hydraulics; Instrumentation and Controls, 721-726, May 11–15, 2008
Publisher: American Society of Mechanical Engineers
Paper No: ICONE16-48692
... Passive Autocatalytic Recombiners (PARs) in PWR-Containments remove hydrogen released in case of a severe accident with core damage by catalytic oxidation with the oxygen of the containment atmosphere. The removal of hydrogen in autocatalytic recombiners (PARs) results in temperature levels...
Proceedings Papers

Proc. ASME. ICONE16, Volume 4: Structural Integrity; Next Generation Systems; Safety and Security; Low Level Waste Management and Decommissioning; Near Term Deployment: Plant Designs, Licensing, Construction, Workforce and Public Acceptance, 435-443, May 11–15, 2008
Publisher: American Society of Mechanical Engineers
Paper No: ICONE16-48760
... to their inherent mechanical properties, minimal thermo-mechanical stresses while improving the performance efficiency in a compact footprint. 09 07 2009 NGNP Heat Exchanger High Temperature Ceramic Hydrogen Proceedings of the 16th International Conference on Nuclear Engineering ICONE16 May...
Proceedings Papers

Proc. ASME. ICONE10, 10th International Conference on Nuclear Engineering, Volume 2, 317-321, April 14–18, 2002
Publisher: American Society of Mechanical Engineers
Paper No: ICONE10-22515
... in the surface structure and allow iled analysis of the catalyst activity. Keywords: hydrogen, recombiner, catalyst, PWR, ignition (PARs). These devices make use of the fact that hydrogen and oxygen react exothermally on catalytic surfaces already at low temperatures generating steam and heat. Recombiners...
Proceedings Papers

Proc. ASME. ICONE10, 10th International Conference on Nuclear Engineering, Volume 2, 137-144, April 14–18, 2002
Publisher: American Society of Mechanical Engineers
Paper No: ICONE10-22206
...1pressure and high temperature. A study has been carried out using the GASFLOW 2.1 three-dimensional CFD code to evaluate the hydrogen distribution in the containment during a beyond design basis accident. The VVER-440/213 cts. One 3D block contains the reactor buildi ls the air traps. 1D ducts...
Proceedings Papers

Proc. ASME. ICONE10, 10th International Conference on Nuclear Engineering, Volume 2, 29-41, April 14–18, 2002
Publisher: American Society of Mechanical Engineers
Paper No: ICONE10-22043
... parameters as the total pressure, and the hydrogen concentration, as well as geometrical parameters of the catalytic elements as the height and the spacing. We use a theoretical model validated by using the KALI experiments. In this model (Avakian, 1999), the reaction rate is diffusion-controlled, i.e...
Proceedings Papers

Proc. ASME. ICONE14, Volume 4: Computational Fluid Dynamics, Neutronics Methods and Coupled Codes; Student Paper Competition, 515-524, July 17–20, 2006
Publisher: American Society of Mechanical Engineers
Paper No: ICONE14-89173
... 17 09 2008 Accident Localisation System (ALS) of Ignalina NPP is a “pressure suppression” type confinement, which protects the population, employees and environment from the radiation hazards. According to the Safety Analysis Report for Ignalina NPP ∼110 m 3 of hydrogen is released...
Proceedings Papers

Proc. ASME. ICONE14, Volume 2: Thermal Hydraulics, 643-649, July 17–20, 2006
Publisher: American Society of Mechanical Engineers
Paper No: ICONE14-89620
... 17 09 2008 The THAI experimental programme includes combined-effect investigations on thermal hydraulics, hydrogen, and fission product (iodine and aerosols) behaviour in LWR containments under severe accident conditions. An overview on the experiments performed up to now...