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민문기,이재기,이광현,이동일 한국원자력학회 2019 Nuclear Engineering and Technology Vol.51 No.4
When the equipment which is related to safety or important to power production is installed in nuclearpower plant units (NPPs), verification of equipment Electromagnetic Susceptibility (EMS) must be performed. The low-frequency radiated magnetic field susceptibility (RS101) test is one of the EMS testsspecified in U.S NRC (Nuclear Regulatory Commission) Regulatory Guide (RG) 1.180 revision 1. The RS101test verifies the ability of equipment installed in close proximity to sources of large radiated magneticfields to withstand them. However, RG 1.180 revision 1 allows for an exemption of the low-frequencyradiated magnetic susceptibility (RS101) test if the safetyerelated equipment will not be installed inareas with strong sources of magnetic fields. There is no specific exemption criterion in RG 1.180 revision1. EPRI TR-102323 revision 4 specifically provides a guide that the low-frequency radiated magnetic fieldsusceptibility (RS101) test can be conservatively exempted for equipment installed at least 1 m awayfrom the sources of large magnetic fields (>300 A/m). But there is no exemption criterion for equipmentinstalled within 1 m of the sources of smaller magnetic fields (<300 A/m). Since some types of equipmentradiating magnetic flux are often installed near safety related equipment in an electrical equipmentroom (EER) and main control room (MCR), the RS101 test exemption criterion needs to be reasonablydefined for the cases of installation within 1 m. There is also insufficient data regarding the strength ofmagnetic fields that can be used in NPPs. In order to ensure confidence in the RS101 test exemptioncriterion, we measured the strength of low-frequency radiated magnetic fields by distance. This study isexpected to provide an insight into the RS101 test exemption criterion that meets the RG 1.180 revision 1. It also provides a margin analysis that can be used to mitigate the influence of low-frequency radiatedmagnetic field sources in NPPs
민문기,류지호,김용인,박맹렬,이성화,염석란,한상균 대한응급의학회 2011 大韓應急醫學會誌 Vol.22 No.4
Traditional cardiopulmonary resuscitation (CPR)training methods have been gradually replaced by practiceoriented methods such as the American Heart Association (AHA) basic life support (BLS) course for healthcare providers. We attempted to investigate nurses’ and other healthcare professionals’ retention of BLS skills over time after taking the AHA BLS course for healthcare providers. Methods: Healthcare providers were screened for their retention of CPR skills at regular intervals up to 1 year after completing the AHA BLS course. Certified BLS instructors administered skills tests. Results: The degree of skills maintained over time decreased, but not significantly (p=0.207, p=0.160). The scores of written tests decreased over time, but not significantly (p=0.082). The degree of CPR knowledge and skills maintained was higher in the nurse group than in the healthcare professional group; this difference was statistically significant (p=0.02, <0.001, <0.001). However, regarding the degree of knowledge and skills for CPR maintained over time, there was no statistically significant difference between each group. Conclusion: After the AHA BLS course for healthcare providers, in-hospital healthcare professionals retain significantly less information after 3 months. We suggest that a skill review is needed within 3 months after CPR training.
국내 응급의학 전공의들의 비정규 시간 근무 현황과 선호도
민문기,이장영,도현수,홍승우,정성필,김승환,유인술,이경룡 대한응급의학회 2004 大韓應急醫學會誌 Vol.15 No.6
B a c k g r o u n d: The workload of emergency medicine residents (EMRs) is expected to be high. Especially, and working during extra-regular working time (ERT) provides them with great stress. In spite of this, their workload and preference for shift work during ERT has not been studied in Korea. M e t h o d: The postal survey was sent to the EMRs of training hospitals. The survey consisted of 10 questions which assessed their shift lengths, shift-length preferences, degree of fatigue after night shift, allowance for an ERT shift and so on. The analysis was done using the SPSS Win p r o g r a m . R e s u l t: Surveys were sent to 240 EMRs and eighty-two (82) EMRs responded. Most of them (85.4%) had more than 10 night shifts per month. The most common shift lengths were 12 hours (53.7%) and 24 hours (23.2%), and the most preferred shift length was 12 hours (50.0%). More than half of the EMRs felt very tired after night shifts. The desired allowance for an ERT night shift was 2.1 times on Saturday, 2.5 times on Sunday, and 3.6 times on holiday, compared to that for a weekday night shift. C o n c l u s i o n: The current workload of an EMR is very high. The desire from ERT shift is low, so appropriate strategies should be sought to compensate the ERT workload.
민문기,염석란,류지호,김용인,박맹렬,한상균,이성화,박성욱,박순창 대한응급의학회 2016 Clinical and Experimental Emergency Medicine Vol.3 No.3
Objective We compared training using a voice advisory manikin (VAM) with an instructor-led (IL) course in terms of acquisition of initial cardiopulmonary resuscitation (CPR) skills, as defined by the 2010 resuscitation guidelines. Methods This study was a randomized, controlled, blinded, parallel-group trial. We recruited 82 first-year emergency medical technician students and distributed them randomly into two groups: the IL group (n=41) and the VAM group (n=37). In the IL-group, participants were trained in “single-rescuer, adult CPR” according to the American Heart Association’s Basic Life Support course for healthcare providers. In the VAM group, all subjects received a 20-minute lesson about CPR. After the lesson, each student trained individually with the VAM for 1 hour, receiving real-time feedback. After the training, all subjects were evaluated as they performed basic CPR (30 compressions, 2 ventilations) for 4 minutes. Results The proportion of participants with a mean compression depth ≥50 mm was 34.1% in the IL group and 27.0% in the VAM group, and the proportion with a mean compression depth ≥40 mm had increased significantly in both groups compared with ≥50 mm (IL group, 82.9%; VAM group, 86.5%). However, no significant differences were detected between the groups in this regard. The proportion of ventilations of the appropriate volume was relatively low in both groups (IL group, 26.4%; VAM group, 12.5%; P=0.396). Conclusion Both methods, the IL training using a practice-while-watching video and the VAM training, facilitated initial CPR skill acquisition, especially in terms of correct chest compression.