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Risk-informed Emergency Response Training for Backdraft in Nuclear Power Plants
Mihyun Kim,Wonkook Kim,Hongki Kim,Jungman Kim,Sunhong Yoon,Jangwon Choi,Heemoon Kim 한국화재소방학회 2023 International Journal of Fire Science and Engineer Vol.37 No.3
Research has been conducted for developing fire evacuation and response training programs for nuclear power plant (NPP) application. Among numerous fire scenarios that may occur in an NPP environment, three different points of origin for a fire were selected for the program based on a risk-informed approach: switchgear room, main control room, and safety injection pump room. Fire outcomes were predicted for these scenarios via numerical modeling and the results were incorporated into the newly developed fire evacuation and response training program for the APR1400, Korea’s next-generation NPP model. The switchgear room fire scenario was found to have the most potential for backdraft to occur during manual fire response following automatic gaseous fire suppression system activation. The emergency response manual does discuss this possible backdraft occurrence; however, the guidance to avoid injuries is qualitative, such as to be cautious of backdrafts and wait a sufficient amount of time after opening a door before entering the. In this study, backdraft phenomenon that may occur from a switchgear room fire was numerically examined using the recent version of the Fire Dynamics Simulator to develop an appropriate timeline to be implemented in the fire evacuation and response training program. Based on the findings, the following guidance is provided: (1) backdraft can only occur when the fire originates in the space near the door; (2) wait at least 10 minutes after opening the door before entering the room; (3) watch for rapid smoke production, as this may be an antecedent phenomenon of backdraft; and (4) when smoke production increases rapidly, leave the room as soon as possible to avoid being caught within the deflagrating flames from a backdraft.
Synthesis of Uniform Ferrimagnetic Magnetite Nanocubes
Kim, Dokyoon,Lee, Nohyun,Park, Mihyun,Kim, Byung Hyo,An, Kwangjin,Hyeon, Taeghwan American Chemical Society 2009 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Vol.131 No.2
<P>We synthesized uniform ferrimagnetic magnetite nanocubes in the size range from 20 to 160 nm. The magnetic property of the nanocubes was characterized, and magnetic separation of the histidine-tagged protein was demonstrated.</P>
New-feminism Flow in South Korea from 2015 to 2017
MiHyun, KIM 이화여자대학교 아시아여성학센터 2018 이화여자대학교 아시아여성학센터 학술대회자료집 Vol.2018 No.1
New feminism has emerged in South Korea since 2015. This paper introduces the serious engagement of feminist activism to stop violence against women from 2015 to 2017. The re-boot of feminism started via the web (i.e., SNS or online community) and the young feminists came out to the street and made their voices heard since the Femicide in Gang-nam Station. Nowadays, new feminist groups and projects are still actively forming while, at the same time, the young feminists suffer from backlash and division. As a member of young feminist activism, I will explain what I have experienced and considered significant to share in this gathering.