bluuebunny/crossref_metadata_2025_split huggingface dataset:
Unusual Presentation of Stevens-Johnson Syndrome Induced by Trimethoprim-Sulfamethoxazole: A Case Report
Authors: Mohammad Ali  , Viqar Urbah 
Published: October 2024

Stevens-Johnson syndrome (SJS) is a severe and potentially life-threatening adverse drug reaction characterized by mucocutaneous lesions. Here, I present a unique case of SJS induced by trimethoprim-sulfamethoxazole (TMP-SMX) with an unusual clinical presentation. A 45-year-old female patient with a history of urinary tract infection presented with the development of widespread erythematous macules and papules, progressing to blisters and erosions involving the oral mucosa. The patient's condition rapidly deteriorated, necessitating intensive care management. The temporal association between TMP-SMX initiation and the onset of symptoms, the characteristic clinical and histopathological findings supported the diagnosis of SJS. Prompt withdrawal of the offending drug, supportive care, and multidisciplinary management resulted in a favorable outcome for the patient.
Antara Otoritas dan Otonomi : Pertautan Hak Asasi Manusia dalam Praktik Eksekusi Putusan PTUN
Authors: Ahmad Ahmad , Suciani Putri Viorizza , Muhtar Mohamad Hidayat 
Published: October 2024

Tujuan penulisan ini adalah untuk mengetahui pentingnya perlindungan hak asasi manusia dalam pelaksanaan upaya paksa eksekusi putusan Peradilan Tata Usaha Negara (PTUN) dan Kendala Pelaksanaan Eksekusi Paksa Putusan PTUN dalam mewujudkan Perlindungan Hak Asasi Manusia. Sebagaimana diketahui, Penguatan eksekusi putusan pengadilan tata terus diperkuat melalui perubahan Undang-Undang tentang PTUN tahun 2005 dan terakhir 2009 melalui Upaya paksa serta pengenaan sanksi administratif terhadap tergugat yang dalam hal ini adalah pejabat pemerintahan yang tidak melaksanakan putusan pengadilan yang telah memperoleh kekuatan hukum tetap. Tulisan ini menggunakan metode Normatif dengan pendekatan perundang-undangan dan pendekatan konseptual dan dianalisis menggunakan Teknik deskriptif analitis. Hasil penelitian menunjukan Perlindungan hak asasi manusia merupakan hal yang penting dalam menyelesaikan pelaksanaan eksekusi paksa putusan PTUN agar eksekusi dapat memastikan keadilan bagi semua pihak yang terlibat sesuai dengan prinsip negara hukum yang berkeadilan dalam Undang-Undang Dasar 1945. Selain itu, Kendala Pelaksanaan Eksekusi Paksa Putusan PTUN dalam mewujudkan Perlindungan Hak Asasi Manusia yaitu Kurangnya kerjasama atau permohonan upaya paksa dari pihak penggugat ke PTUN, kurangnya Kesadaran Pejabat, dan kurangnya aturan pelaksana. Pada akhirnya, penulisan ini menawarkan solusi perlunya payung hukum yang lengkap dan tidak bertentangan satu sama lainnya untuk pelaksanaan eksekusi, pelaksanaan penegakan hukum yang konsisten dan tegas, dan peningkatan efisiensi sistem birokrasi dan kapabilitas aparatur pemerintah. Implementasi dari solusi-solusi ini diharapkan dapat memperbaiki proses eksekusi putusan PTUN, menjadikannya lebih berkeadilan, serta berkontribusi positif pada penegakan hukum dan penghormatan terhadap hak asasi manusia di Indonesia.
Corrosion Behavior of Additively Manufactured Stainless Steels in Nuclear Environments
Authors: Goland Micaela , Balbaud Fanny , Fouchereau Alexis , Guerre Catherine , Nguejio Josiane , Puga Beatriz , Rousseau Matthias , Cailloux Thomas , Maskrot Hicham , Pacquentin Wilfried 
Published: October 2024

Abstract
This study examines the corrosion resistance of additively manufactured 316L stainless steel (SS) for nuclear applications across three environments: pressurized water reactor primary water (PWR PW), hot concentrated nitric acid, and seawater. Wire-feed laser additive manufacturing (WLAM) specimens showed oxidation behavior similar to wrought 316L SS in PWR PW, though stress corrosion cracking (SCC) susceptibility varied with heat treatment. In nitric acid testing, laser powder bed fusion (L-PBF) specimens demonstrated superior corrosion resistance compared to conventional SS, primarily due to improved intergranular corrosion resistance resulting from cleaner feedstock powder and rapid solidification rates that minimized grain boundary segregation. Laser metal deposition (LMD) repair studies in seawater environments successfully produced dense, crack-free repairs with good metallurgical bonding that matched the substrate’s mechanical properties while maintaining corrosion resistance. These results emphasize the importance of corrosion testing for additively manufactured components and understanding how their unique microstructures affect performance.
Creep Resistant Martensitic Steels for Operation at High-Temperatures in Power Generation Applications
Authors: Detrois Martin , Hung Chang-Yu , Antonov Stoichko , Jablonski Paul D. 
Published: October 2024

Abstract
Increasing the temperature capabilities of ferritic/martensitic 9-12% Cr steels can help in increasing the operating temperature of land-based turbines and minimize the use of expensive high-temperature alloys in the hot section. A creep resistant martensitic steel, JMP, was developed with the potential to operate at or above 650°C. The design of the alloys originated from computational modeling for phase stability and precipitate strengthening using fifteen constituent elements. Cobalt was used for increased solid solution strengthening, Si for oxidation resistance and different W and Mo concentrations for matrix strength and stability. The JMP steels showed increases in creep life compared to MARBN/SAVE12AD at 650°C for testing at various stresses between 138 MPa and 207 MPa. On a Larson-Miller plot, the performance of the JMP steels surpasses that of state-of-the-art MARBN steel. Approximately 21 years of cumulative creep data are reported for the JMP steels which encompasses various compositions. The relationships between composition-microstructure-creep properties are discussed including characterization of microstructures after &gt;20,000 hours in creep.
Coal-fired Power Plant Boiler Tube Corrosion Inspection Equipment and Remaining Lifetime Evaluation Program
Authors: Han Su Ji , Lee Han-sang , Min Hae-ryun , Lee Gil Jae , Lee Seung Wook , Kim JeongTae 
Published: October 2024

Abstract
This paper discusses the design of a prototype for accurately inspecting the degree of wall thinning in boiler tubes, which plays a critical role in power plants. The environment in power plants is characterized by extreme conditions such as high temperatures, high pressure, and ultrafine dust (carbides), making the maintenance and inspection of boiler tubes highly complex. As boiler tubes are key components that deliver high-temperature steam, their condition critically affects the efficiency and safety of the power plant. Therefore, it is essential to accurately measure and manage the wall thinning of boiler tubes.
Metal Temperature Estimation in High-Strength Austenitic Stainless Steels through Precipitation Analysis
Authors: Hashimoto Keita , Arisue Ko , Saito Nobuhiko , Nakamura Tadaaki , Komai Nobuyoshi , Tominaga Kimihiko 
Published: October 2024

Abstract
In order to comprehensively assess creep damage of 18Cr-9Ni-3Cu-Nb-N steel (ASME SA-213 S30432), which is widely used in critical high-temperature regions of heat transfer tubes of ultrasupercritical (USC) boilers, our investigation centered on the σ phase. This phase undergoes formation and coarsening during prolonged thermal exposure. We developed a technique to estimate operational heating metal temperatures by analyzing average particle size of the σ phase (MLAS-EX). By extracting a certain number of σ phase from the largest particle size, it is possible to select the σ phase that nucleated and grew in the early stage of heating. The correlation between the average particle size and the Hollomon-Jaffe Parameter (HJP), a parameter of heating temperature and time, allows precise estimation of the heating metal temperature. Our validation demonstrates that the replica method, which is a nondestructive method and effective for evaluating actual plants, is also applicable. Using our newly developed technique for estimating heating metal temperature, it is possible to predict the remaining creep life of heat transfer tubes based on data related to creep rupture characteristics, working stress and operating time. The developed method has already been successfully applied to evaluate the creep life of several actual boilers.
Microstructure of Modified 9Cr-1Mo Steel Manufactured via Laser Powder Bed Fusion
Authors: Hatakeyama Tomotaka , Sawada Kota , Suzuki Masaru , Watanabe Makoto 
Published: October 2024

Abstract
Modified 9Cr-1Mo steel was manufactured via laser powder bed fusion (LPBF) using gas atomized powders under various building conditions. Dense samples were obtained at an energy density of 111-125 J/mm3. As-built samples were subjected to a normalization and tempering heat treatments. The microstructure of the as-built sample exhibits a duplex structure, comprising coarse columnar δ-ferrite grains and fine martensite grains. In addition, a small amount of retained austenite phase was observed at the interface between δ-ferrite and martensite. The formation of δ-ferrite is attributed to the extremely rapid solidification that occurs during the LPBF process, while martensite is obtained through the phase transformation because of the thermal cycles experienced during the process. The area fraction of δ-ferrite and martensite can be controlled by adjusting the LPBF parameters. Typical as-built microstructure morphology characterized by the columnar δ- ferrite was eliminated after the heat treatments, resulting in a tempered martensitic microstructure that is identical with that obtained through the conventional process. However, an increase in prior austenite grain size was observed when the area fraction of δ-ferrite in the as-built condition was high, due to faster phase transformation kinetics of martensite than that of δ-ferrite during the normalization. This suggests that the prior austenite grain size can be controlled by optimizing the area fraction of δ-ferrite and martensite in the as-built microstructure.
Effect of Induction Coil Configuration for Localized Postweld Heat Treatment of 9% Cr Steel Control Valves
Authors: Nakunchon Matas , Veeranawin Puwadech , Khunphakdee Phuris , Keawkoed Jaturawit 
Published: October 2024

Abstract
Main steam control valves are crucial components in power plants, as they are the final elements in the steam piping system before the steam enters the turbine. If any parts of these valves become damaged, they can severely harm the steam turbines. Recently, power plants have been required to operate under cyclical loading, which increases the risk of cracks in the control valve seats. This is due to the different rates of expansion between the Stellite surface and the underlying Grade 91 steel surface when exposed to high temperatures. To ensure a reliable power supply, power plants cannot afford long downtimes, making on-site service essential. This paper presents an on-site technique for post-weld heat treatment (PWHT) of Stellite seats. By using a heating pad arrangement and an induction heater, the required PWHT temperature of 740°C, as specified in the welding specification procedure (WPS), can be achieved. This method allows for on-site valve seat repair and can be applied to other power plants as well.
Flow Accelerated Corrosion Investigation and Mitigation in a Heat Recovery Steam Generator
Authors: Khunphakdee Phuris , Limpanichkul Sarayuth 
Published: October 2024

Abstract
Recently, single-phase flow accelerated corrosion (FAC) has been found extensively in Thailand, especially in single shaft combined cycle power plant heat recovery steam generators, the design of which are compact and cannot be easily accessed for service. This takes at least one week for repairing and costs at least half a million dollar per shutdown. In this paper, the investigation of the single-phase FAC in a high-pressure economizer of a combined cycle power plant is demonstrated. Water chemical parameters such as pH and dissolved oxygen are reviewed, the process simulation of the power plant is performed to capture risk areas for the FAC. A computational fluid dynamics study of the flow is done to understand the flow behavior in the damaged tubes next to an inlet header. Some modifications such as flow distributor installation and tube sleeve installation were performed for short-term solutions. Moreover, new economizer headers are designed with low alloy material to mitigate the problem. The installation process of the newly fabricated headers is finally described. The findings in this paper serve as a guideline for FAC risk assessment, FAC investigation and mitigation, and service in compact heat recovery steam generators.
Component Testing under Cyclic Operation Modes for Martensitic Steels and Ni-based Alloys in the HWT3 Power Plant Test Loop
Authors: Klenk Andreas , Friedrich Maximilian , Metzger Klaus 
Published: October 2024

Abstract
This paper reports on the latest in a series of projects aiming at the qualification of new and proven materials in components under a severe service environment. In the initial stages of the project (HWT I & HWT II), a test loop at Unit 6 of the GKM Power Plant in Mannheim was used to study the behavior of components for advanced ultra-supercritical (A-USC) plants made from nickel alloys at 725 °C under both static and fluctuating conditions. Due to recent changes in the operation modes of existing coal-fired power plants, the test loop was modified to continue operating the existing nickel components in the static section while applying thermal cycles in a different temperature range. HR6W pipes and valves were added to the bypass of the static section, and all components in the cyclic section were replaced with P92, P93, and HR6W components. The test loop achieved approximately 9000 hours of operation and around 800 cycles with holding times of 4 and 6 hours. After dismantling the loop, nondestructive and destructive examinations of selected components were conducted. The accompanying testing program includes results from thermal fatigue, fatigue, thermal shock, and long-term creep tests, focusing on the behavior of base materials and welds, particularly for HR6W, P92, P93, and other nickel-based alloys. Additionally, test results on dissimilar welds between martensitic steel P92 and nickel alloys A617 and HR6W are presented. Numerical assessments using standardized and numerical lifetime estimation methods complement the investigations. This paper provides insights into the test loop design and operational challenges, material behavior, and lifetime, including advanced numerical simulations and operational experiences with valves, armatures, piping, and welds.
Investigation of Cold-spray Performance for Cleaning and Repair of Dry Cask Storage System (DCSS) Canisters within a Characteristic Confinement
Authors: Lacy JP , Tatman Jon , Hargadine Mitch , Chu Shannon , Johnson Kyle , Beard Jamie 
Published: October 2024

Abstract
Extended storage of spent nuclear fuel (SNF) in intermediate dry cask storage systems (DCSS) due to lack of permanent repositories is one of the key issues for sustainability of the current domestic Light Water Reactor (LWR) fleet. The stainless steel canisters used for storage in DCSS are potentially susceptible to chloride-induced stress corrosion cracking (CISCC) due to a combination of tensile stresses, susceptible microstructure, and a corrosive chloride salt environment. This research assesses the viability of the cold-spray process as a solution to CISCC in DCSS when sprayed with miniature tooling within a characteristic confinement in two different capacities: cleaning and coating. In general, the cold-spray process uses pressurized and preheated inert gas to propel powders at supersonic velocities, while remaining solid-state. Cold-spray cleaning is an economical, non-deposition process that leverages the mechanical force of the propelled powders to remove corrosive buildup on the canister, whereas the cold spray coating process uses augmented parameters to deposit a coating for CISCC repair and mitigation purposes. Moreover, both processes have the potential to induce a surface compressive residual stress that is known to impede the initiation of CISCC. Surface morphology, deposition analysis, and microstructural developments in the near-surface region were examined. Additionally, cyclic corrosion testing (CCT) was conducted to elucidate the influence of cold-spray cleaning and coating on corrosion performance.
The Development of Weldable Nickel-Based Superalloys and Technologies for Repair and Additive Manufacturing of Turbine Engine Components
Authors: Gontcharov Alexandre B. , Lowden Paul 
Published: October 2024

Abstract
High gamma prime Ni-based superalloys comprising ≥3.5 % Al are difficult to weld due to high propensity of these materials to weld solidification, heat affected zone liquation, and stress-strain cracking. In this study the root cause analysis of cracking and overview on the developed weldable Ni-based superalloys for repair of turbine engine components manufactured from equiaxed (EA), directionally solidified (DS), and single crystal (SX) materials as well as for 3D AM is provided. It is shown that the problem with the solidification and HAZ liquation cracking of turbine engine components manufactured from EA and DS superalloys was successfully resolved by modification of welding materials with boron and silicon to provide a sufficient amount of eutectic at terminal solidification to promote self-healing of liquation cracks along the weld - base material interface. For crack repair of turbine engine components and 3D AM ductile LW4280, LW7901 and LCT materials were developed. It is shown that LW7901 and LCT welding materials comprising 30 - 32 wt.% Co produced sound welds by GTAW-MA on various SX and DS materials. Welds demonstrated high ductility, desirable combination of strength and oxidation properties for tip repair of turbine blades. Examples of tip repair of turbine blades are provided.
Sigma Embrittlement Evaluation Test for Dissimilar Welding Between F6NM and FXM-19
Authors: Osafune Ryoji , Tate Stephen , Leiss Jamison 
Published: October 2024

Abstract
In dissimilar welds between martensitic stainless steel F6NM and nitrogen-strengthened austenitic stainless steel FXM-19, type 209 austenitic welding consumables are used to align with the mechanical properties and chemical composition of FXM-19, with F6NM welds requiring post-weld heat treatment (PWHT) to restore ductility and toughness, raising concerns about sigma embrittlement in ER209 butter welds. This study investigated the mechanical properties and microstructure of F6NM+FXM-19 dissimilar welds, finding no detrimental sigma phase formation in the butter (PWHT) and groove weld metal (as welded) across various welding processes, indicating no sigma phase transformation due to PWHT. Submerged arc welding (SAW) and gas tungsten arc welding (GTAW) demonstrated good mechanical properties, while Gas Metal Arc Welding with 100% Ar gas shield (GMAW 100% Ar) could not be properly evaluated due to weld defects. SAW and GTAW were deemed suitable for this dissimilar weld joint, with several welding processes providing acceptable results using ER209 filler material for fabricating pressure vessels requiring F6NM to XM-19 joints.
Weld Process Effects on Fatigue Performance in the Repair of Coke Drums
Authors: Payne Ronald 
Published: October 2024

Abstract
Coke drums experience failures in through-wall cracking throughout their operating life, resulting from low cycle fatigue. Coke drums are typically fabricated from Chrome Moly (CrMo) steels. This study was performed on P4 (1.25Cr-0.5Mo) base material using ER70S-B2L and Alloy 625 (ERNiCrMo-3) filler materials. Specimens were welded with the temper-bead/controlled deposition welding technique. The weld processes used were HP-GTAW, GMAW and SMAW. The fatigue performance, HAZ hardness and toughness of the weld samples was evaluated. The HP-GTAW welds exhibited an order of magnitude improvement in fatigue performance when compared to the other weld processes using ER70S-B2L filler material. The HP-GTAW welds also exhibited improved HAZ hardness and toughness when compared to the other weld processes. This presentation will introduce the HP-GTAW process, its features, and benefits and where it is applied in Coke drum repair welding. Comparative test results of the different weld processes for fatigue performance, HAZ tempering, and toughness will also be presented.
Summary of Structural Alloy Compatibility in Supercritical CO2 at 450°-800°C
Authors: Pint Bruce A. , Pillai Rishi , Keiser James R. 
Published: October 2024

Abstract
Supercritical CO2 (sCO2) is of interest as a working fluid for several concepts including the direct- fired Allam cycle as a low-emission fossil energy power cycle. Over the past 10 years, laboratory exposures at 300 bar sCO2 have found reasonably good compatibility for Ni-based alloys at &lt;800°C, including an assessment of the sCO2 impact on room temperature mechanical properties after 750°C exposures. However, initial screening tests at 1 and 20 bar CO2 at 900°-1100°C showed poor compatibility for Ni-based alloys. In an open cycle, the introduction of 1%O2 and 0.1- 0.25%H2O impurities at 300 bar increased the reaction rates ≥2X at 750°C. At lower temperatures, steels are susceptible to C ingress and embrittlement. Creep-strength enhanced ferritic steels may be limited to &lt;550°C and conventional stainless steels to &lt;600°C. Two strategies to increase those temperatures are higher Ni and Cr alloying additions and Al- or Cr-rich coatings. Alloy 709 (Fe- 20Cr-25Ni) shows some promising results at 650°C in sCO2 but reaction rates were accelerated with the addition of O2 and H2O impurities. Pack aluminized and chromized Gr.91 (Fe-9Cr-1Mo) and type 316H stainless steel show some promise at 600°-650°C but further coating optimization is needed.
Computational Approach To Predict Solidification Cracking Susceptibility in Welding Filler Metals
Authors: Riffel Kaue C. , Marques Igor J. , Leon-Henao Henry , Ramirez Antonio J. , McCracken Steve , Tatman Jonathan 
Published: October 2024

Abstract
Solidification cracking (SC) is a defect that occurs in the weld metal at the end of the solidification. It is associated with the presence of mechanical and thermal stresses, besides a susceptible chemical composition. Materials with a high solidification temperature range (STR) are more prone to the occurrence of these defects due to the formation of eutectic liquids wetting along the grain boundaries. The liquid film collapses once the structure shrinks and stresses act during the solidification. Thus, predicting the occurrence of SC before the welding process is important to address the problem and avoid the failure of welded components. The nuclear power industry has several applications with dissimilar welding and SC-susceptible materials, such as austenitic stainless steels, and Ni-based alloys. Compositional optimization stands out as a viable approach to effectively mitigate SC in austenitic alloys. The integration of computational modeling into welding has significantly revolutionized the field of materials science, enabling the rapid and cost-effective development of innovative alloys. In this work, a SC resistance evaluation is used to sort welding materials based on a computational fluid dynamic (CFC) model and the alloy's chemical composition. An index named Flow Resistance Index (FRI) is used to compare different base materials and filler metals as a function of dilution. This calculation provides insights into the susceptibility to SC in dissimilar welding, particularly within a defined dilution range for various alloys. To assess the effectiveness of this approach, the relative susceptibility of the materials was compared to well-established experimental data carried out using weldability tests (Transvarestraint and cast pin tear test). The FRI calculation was programmed in Python language and was able to rank different materials and indicate the most susceptible alloy combination based on the dilution and chemical composition.