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Assessment of Axial Power Peaking Factors in GHARR-1 LEU Core: A Decadal Simulation Analysis

World Journal of Nuclear Science and Technology 2024年第1期14卷 72-85页

作者： emmanuel kwame ahiave emmanuel Ampomah-Amoako Rex Gyeabour Abrefah Mathew Asamoah Department of Mathematics and Statistics Ho Technical University Ho Ghana Department of Nuclear Engineering Graduate School of Nuclear and Allied Sciences University of Ghana Accra Ghana Nuclear Regulatory Authority Accra Ghana National Nuclear Research Institute Accra Ghana

This study aims to thoroughly investigate the axial power peaking factors (PPF) within the low-enriched uranium (LEU) core of the Ghana Research Reactor-1 (GHARR-1). This study uses advanced simulation tools, like the MCNPX code for analysing neutron behavior and the PARET/ANL code for understanding power variations, to get a clearer picture of the reactor’s performance. The analysis covers the initial six years of GHARR-1’s operation and includes projections for its whole 60-year lifespan. We closely observed the patterns of both the highest and average PPFs at 21 axial nodes, with measurements taken every ten years. The findings of this study reveal important patterns in power distribution within the core, which are essential for improving the safety regulations and fuel management techniques of the reactor. We provide a meticulous approach, extensive data, and an analysis of the findings, highlighting the significance of continuous monitoring and analysis for proactive management of nuclear reactors. The findings of this study not only enhance our comprehension of nuclear reactor safety but also carry significant ramifications for sustainable energy progress in Ghana and the wider global context. Nuclear engineering is essential in tackling global concerns, such as the demand for clean and dependable energy sources. Research on optimising nuclear reactors, particularly in terms of safety and efficiency, is crucial for the ongoing advancement and acceptance of nuclear energy.

关键词： GHARR-1 Power Peaking Factor Nuclear Reactor Safety Low Enriched Uranium Core Operational Longevity Thermal Hydraulics

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Assessment of Axial Power Peaking Factors in GHARR-1 LEU Core: A Decadal Simulation Analysis

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World Journal of Nuclear Science and Technology（核科学与技术国际期刊） 2024年第1期

作者： emmanuel kwame ahiave emmanuel Ampomah-Amoako Rex Gyeabour Abrefah Mathew Asamoah

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Study of the Active Management of the Third Stage of Labor (AMTSL) in Four Maternity Hospitals in the Commune of Kara (Togo)

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Open Journal of Obstetrics and Gynecology 2021年第9期11卷 1151-1160页

作者： Dédé Régine Diane Ajavon Akila Bassowa Baguilane Douaguibe Ameyo Ayoko Ketevi Kossi Edem Logbo-Akey Lihanimpo Djalogue Ayékinam Kadjo Enam ahiave Ameyo Vignona Abidi Mazahalo Baniza Abdoul-Samadou Aboubakari Department of Obstetric Gynecology University of Kara Kara Togo National School of Kara Midwives University of Kara Kara Togo Department of Obstetric Gynecology University of Lomé Lomé Togo Department of Medicine University of Kara Kara Togo

Introduction: Active management of the third period of labor (AMTSL) significantly prevents postpartum hemorrhage onset. Objective: To assess the practice of AMTSL in four maternity in the commune of Kara (Kara University Hospital Center, Kara Tomdè Regional Hospital Center, SOS Kara Mother-Child Hospital, and Adabaweré Peripheral Care Unit). Method: This was a cross-sectional descriptive study over four months, from January 28 to May 28, 2019. Two questionnaires were used for data collection: an observation and evaluation grid AMTSL practice and a questionnaire for providers. The grid was designed and adapted to the RPC repository model for emergency obstetric and neonatal care in Africa 2018. The data was processed using the Epi Info 7 software. Results: During the study period, 528 parturients were identified and 30 providers surveyed. No provider had received ongoing training in AMTSL. The practice of AMTSL was systematic at each delivery. The practice was correct in 45.8%. Factors associated with incorrect practice were relationship between caregiver-patient (p = 0.0005), placental examination (p = 0.0003), postpartum monitoring (p = 0.0001). Conclusion and Suggestion: The practice of AMTSL is systematic, but it was incorrect regardless of the provider’s qualification. Continuing education

关键词： AMTSL Assessment Midwives State Auxiliary Birth Attendants Togo

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