Results 21 to 30 of about 1,560 (162)

Development of a large-deformation model for the pressure-vessel lower head and analysis of its application in the FOREVER experiment

He jishu, 2023
BackgroundThe in-vessel retention (IVR) strategy is an important measure for mitigating severe reactor accidents. It has been successfully applied to the severe-accident management of advanced pressurized water reactors such as the AP1000, HPR1000, and ...
ZHAI Runze, ZHANG Bin, YANG Hao, GAO Pengcheng, TANG Shaowei, SHAN Jianqiang   +5 more
doaj   +1 more source

Effect of finned structure on critical heat flux (CHF) in downward-face pool boiling

Mechanical Engineering Journal, 2020
Critical heat flux (CHF) plays an important role as the upper limit of heat dissipation process during the in-vessel reactor external reactor vessel cooling (IVR-ERVC). IVR-ERVC is regarded as a very effective way to release the decay heat after the core
Kai WANG, Nejdet ERKAN, Koji OKAMOTO
doaj   +1 more source

Study of nuclear reactor external vessel passive cooling using computational fluid dynamics

Nuclear Engineering and Design, 2021
Nuclear energy has recently re-gained support as a reliable source of carbon-free electricity. However, the safety of nuclear plants is still questioned, particularly in the wake of the tragic events in Fukushima. In response to this, the adoption of passive safety systems, providing cooling to the plant even in the absence of any active power, has ...
Colombo, M., Fairweather, M.
openaire   +3 more sources

Structural assessment of reactor pressure vessel under multi-layered corium formation conditions

Nuclear Engineering and Technology, 2015
External reactor vessel cooling (ERVC) for in-vessel retention (IVR) has been considered one of the most useful strategies to mitigate severe accidents.
Tae Hyun Kim, Seung Hyun Kim, Yoon-Suk Chang   +2 more
doaj   +1 more source

Assessment of thermal safety margins for the IVR-ERVC strategy of the i-SMR using the CINEMA code

Nuclear Engineering and Technology
In-vessel corium retention with external reactor vessel cooling (IVR-ERVC) is a key severe accident mitigation strategy to prevent lower-head failure and retain fission products inside the reactor vessel. This study assesses the applicability of IVR-ERVC
Dong-Hun Shin, Sang Ho Kim, Donggun Son, Yonadan Choi, Young Hee Kim, Hyoung Suk Yu, Yong Hoon Jeong   +6 more
doaj   +1 more source

In-Vessel Melt Retention of Pressurized Water Reactors: Historical Review and Future Research Needs

Engineering, 2016
A historical review of in-vessel melt retention (IVR) is given, which is a severe accident mitigation measure extensively applied in Generation III pressurized water reactors (PWRs).
Weimin Ma, Yidan Yuan, Bal Raj Sehgal
doaj   +1 more source

Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing

Advanced Materials, EarlyView.
This work has provided a protocol for fabricating retinomorphic phototransistors by integrating ferroelectric ligands with quantum dots. The resulting device combines ferroelectricity, optical responsiveness, and low‐power operation to enable adaptive signal amplification and high recognition accuracy under low‐light conditions, while supporting ...
Tingyu Long, Huanyu Zhou, Jaewan Ko, Hongwei Tan, Jaemin Lim, Yanfei Zhao, Daehan Kang, Eojin Yoon, Gyeong‐Tak Go, Somin Kim, Seung‐Woo Lee, Chan‐Yul Park, Hyojun Choi, Hyeran Kim, Hyung Joong Yun, Sung Hyuk Park, Kwan Sik Park, Jeong Woo Park, Mungeun Kim, Yong Soo Cho, Ho Won Jang, Wenqiang Yang, Min Hyuk Park, Wan Ki Bae, Sebastiaan van Dijken, Joona Bang, Tae‐Woo Lee   +26 more
wiley   +1 more source

Effect of new drywell cooler application for venting start time during severe accidents

Mechanical Engineering Journal, 2020
Nuclear power plants are equipped with a hardened containment venting system and a filtered containment venting system to avoid a primary containment vessel (PCV) break by over-pressurization. Considering the gas release from these venting systems, it is
Naoyuki ISHIDA, Yasunori NAGATA, Ryusuke KIMURA, Koji ANDO   +3 more
doaj   +1 more source

Additive‐Manufactured, Multifunctional Bioreactor Technology for Dynamic Culture of 3D Bioprinted Tissue Models

Advanced Materials Technologies, EarlyView.
We introduce an additively manufactured bioreactor with a perfusion flow system and integrated temperature and pH sensors for skeletal muscle tissue biofabrication. The bioreactor's performance was evaluated by assessing the viability, spreading of the myoblast cells in a printed scaffold, and contraction of the isolated murine musculi interossei ...
Lys Sprenger, Johann Schorzmann, Hsuan‐Heng Lu, Muhammad Osama, Julian Bauer, Michael Haug, Oliver Friedrich, Aldo R. Boccaccini, Frank Döpper, Sahar Salehi   +9 more
wiley   +1 more source

Experimental Study on Influence of External Pressure Vessel Cooling Parameters on Critical Heat Flux

Yuanzineng kexue jishu
In-vessel retention (IVR) of molten material, as one of the most important mitigation measures for serious accidents, can effectively prevent the leakage of molten material from the core to the outside of the pressure vessel, resulting in the release of ...
ZHANG Zhen1, 2, XIONG Wanyu2, XING Dianchuan2, ZAN Yuanfeng2, WANG Guangjin2, CHEN Deqi1, 3, , XU Jianjun2
doaj   +1 more source