Results 81 to 90 of about 823,974 (286)

Failure prediction method of heat transfer tube of nuclear power steam generator based on WOA-SVR

Journal of Radiation Research and Applied Sciences
Steam generator is the key equipment for energy conversion in nuclear power plants. The high temperature and high pressure fluid flowing inside the steam generator will cause flow-induced vibration of heat transfer tubes, resulting in fretting wear ...
Xianwei Wu, Zhenghua Xu, Yong Liu, Zhangkai Chen, Juntao Huang, Yifan Chen   +5 more
doaj   +1 more source

CFD simulation of steam generator tube rupture thermal-hydraulics

, 2004
The tube rupture accident is one among the most risk-dominant events at the nuclear power plants. Several steam generator tube rupture accidents have occurred at the plants in the past.
Maslovarić, Blaženka, Stevanović, Vladimir, Stošić, Zoran V., Prica, Sanja   +3 more
core  

Impact of Trace Water on the Macroscopic Activity of Commercial Ammonia Cracking Catalysts Under Process‐Relevant Conditions

Chemie Ingenieur Technik, EarlyView.
This study evaluates how small water impurities—typical in ammonia cracking feedstock—affect catalyst performance at elevated pressures and temperatures. By decoupling permanent degradation from reversible inhibition, the findings highlight trace water as a significant factor for reliable catalyst screening and industrial ammonia cracking scale‐up ...
Bruno V. P. Lago, Sebastian Wodak, Marianne Ponceau, Axel Behrens, Jan‐Peter Bohn, Sebastian Rehfeldt, Harald Klein   +6 more
wiley   +1 more source

Key Findings from the Artist Project on Aerosol Retention in a Dry Steam Generator

Nuclear Engineering and Technology, 2016
A steam generator tube rupture (SGTR) event with a stuck-open safety relief valve constitutes one of the most serious accident sequences in pressurized water reactors (PWRs) because it may create an open path for radioactive aerosol release into the ...
Abdelouahab Dehbi, Detlef Suckow, Terttaliisa Lind, Salih Guentay, Steffen Danner, Roman Mukin   +5 more
doaj   +1 more source

Steam generator tube integrity program. Phase I report. [PWR] [PDF]

, 1979
The results are presented of the pressure tests performed as part of Phase I of the Steam Generator Tube Integrity (SGTI) program at Battelle Pacific Northwest Laboratory.
Alzheimer, J. M., Clark, R. A., Vagins, M., Morris, C. J.   +3 more
core   +1 more source

Synthesis and characterization of amphiphilic nitroxide 1,1,3,3–tetraethylisoindoline–2–oxyl–5–sodium sulfonate (TEIOSNa)

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract The synthesis and characterization of an amphiphilic nitroxide to be used as a controlling agent in a nitroxide‐mediated living radical polymerization in aqueous dispersion media is presented. In the first stage of nitroxide synthesis (phthalimide protection), two reaction methods were employed: traditional and microwave.
Enrique García‐Leal, Martha Eugenia Albores Velasco, René O. Vargas, Rubén Mil‐Martínez   +3 more
wiley   +1 more source

Evaluation of target-wastage in consideration of sodium-water reaction environment formed on the periphery of an adjacent tube in steam generator of sodium-cooled fast reactor

Nihon Kikai Gakkai ronbunshu, 2018
Wastage on adjacent tubes (target-wastage) arise from water/steam leak in steam generators of sodium-cooled fast reactors (sodium-water reaction). Target-wastage is likely to be caused by liquid droplet impingement erosion (LDI) and Na-Fe composite ...
Akikazu KURIHARA, Ryota UMEDA, Kazuhito SHIMOYAMA, Shin KIKUCHI   +3 more
doaj   +1 more source

Overview of steam generator tube degradation and integrity issues [PDF]

, 1996
The degradation of steam generator tubes in pressurized water nuclear reactors continues to be a serious problem. Primary water stress corrosion cracking is commonly observed at the roll transition zone at U-bends, at tube denting locations, and ...
Shack, W. J., Diercks, D. R., Muscara, J.   +2 more
core  

Harnessing machine learning and optimization for informed chemical engineering decisions: A styrene reactor analysis

The Canadian Journal of Chemical Engineering, EarlyView.
This study shows that integrating multiple machine learning models with optimization and decision‐making improves chemical process design, and that a consensus‐based strategy across models provides more robust and reliable operating recommendations than any single model, especially under limited or noisy data conditions.
Farough Agin, Clémence Fauteux‐Lefebvre, Jules Thibault   +2 more
wiley   +1 more source

Experimental methods in chemical engineering: Temperature‐programmed oxidation—TPO

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Temperature‐programmed oxidation (TPO) probes the oxidative capacity and redox properties of solid materials—catalysts, metal oxides, perovskites, and carbonaceous deposits. It identifies coke type, distribution, and reactivity. TPO instruments pass an oxidizing gas (diluted O2$$ {\mathrm{O}}_2 $$, air, or less commonly N2O$$ {\mathrm{N}}_2 ...
Gholamreza Roohollahi, Jildimara de Jesus Santana, Alexander R. P. Harrison, Sara Andreoli, Ewa Marek, Stuart Scott, Mohammad Latifi, Gregory S. Patience   +7 more
wiley   +1 more source