• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.28 no.12
• /
• pp.6-12
• /
• 2014

The safety and reliability of the power system short-circuit current, the short-circuit current depends on the failure to obtain the objective is to quickly eliminate the breaking capacity of the circuit-breaker selection of the cable, the insulation of electrical equipment and protective relay an important factor in determining the level correction and protective relay selection scheme to be meaningful. Standards used in the domestic circuit breaker is applied to the production of IEC standard, but the American National Standards (ANSI / IEEE) by NEMA specification of the fault current calculations and the application of the asymmetric coefficient Korea. Therefore, in this paper, the IEC 60909 standard IEC breaker fault current calculation method and the method for selection of system configurations reviewed and protection system for reviewing the configuration of various protective relays appropriate correction and the correction value is main protection, back-up protection the equipment so that the period of protection relay coordination to minimize accidents and accident protection to minimize interruptions proposed for cooperation.

• Journal of Korean Academy of Fundamentals of Nursing
• /
• v.23 no.4
• /
• pp.402-410
• /
• 2016

Purpose: Personal protective equipment (PPE) is critical to protect healthcare workers from pandemic outbreaks. This study was designed to identify nurses' knowledge, attitude and perceptions on PPE. Methods: Data were collected from 154 nurses working at a tertiary general hospital, where positively diagnosed and suspected patients were accepted and admitted during the Middle East Respiratory Syndrome Coronavirus outbreak in 2015. The PPE tool consists of 20 items for knowledge, and 5 each for attitudes and perceptions. Results: Overall, knowledge for PPE was higher than moderate (76.95/100), but there was a lack for items related to powered air purifying respirator (PAPR). For attitudes, willingness to work in pandemic outbreaks was the most positive (4.04/5.00). Goggles and PAPR were perceived as the most uncomfortable barriers to work. There was no correlation between knowledge, attitude and perceptions, despite a strong positive correlation between attitude and perceptions. PPE training was identified as a factor to improve knowledge and attitudes on PPE. Conclusion: To respond to pandemic influenza, nurses need to expand their knowledge on PPE up to Level C, and be updated through regular training. Study findings suggest that repetitive studies targeting nurses and other healthcare workers at various hospital settings are necessary.

• Journal of Korean Society of Occupational and Environmental Hygiene
• /
• v.6 no.2
• /
• pp.222-248
• /
• 1996

This study was designed to survey misused expression in 37 KS (Korean Industrial standards) related to personal protective equipment. The results were as follows: 1. One hundred and twenty five misused expressions were found - 44 expressions were used illogically (35.2 %). 80 expressions were wrongly described (64.0 %) The types of illogically misused are: 10 illogical cases, 4 cases of a wrongly designated provision when cited, 12 cases of the lack of provisons for KS, 7 cases of a inappropriate uses of units, 8 cases of an overlapped sizes between standards. - The types of expressions wrongly described are: 30 cases of confusion in using an terms, 4 case of making an error when proofreading, and 29 cases of choosing words not appropriate to describe technical standard, 18 cases of unclear provisons due to missing phrases and terms, and 11 cases of provisons described differently from original intended purposes. 2. There is one case, where the same standard is categorized as two different names. There are three major causes of the misused expressions as seen from the following summary: - Imitated the developed countries' standards without filtering them by considering domestic law and ocher KS standards. - Tended to create each definition for each standard instead use of the basic standard. - Insufficiency of synthetic examination to the correlation between standards.

• Fire Science and Engineering
• /
• v.24 no.1
• /
• pp.128-133
• /
• 2010

The aim of study intends to investigate effect of weight of fire fighting protective equipment for physical activity ability and to provide the base data for the safety of firefighter. The results of the study are as follows. The maximum all-out time is short about 18.8% in weight-jacket case which weight is same with fire-protective equipment than case of gym suit. The maximum oxygen consumption increased 17.6% in gym suit case than case of weight-jacket. The maximum heart rate is high 5.4% in gym suit case than case of weight-jacket.

• The Korean Journal of Emergency Medical Services
• /
• v.25 no.1
• /
• pp.85-103
• /
• 2021

Purpose: This study measured the mental health levels of 119 paramedics, and identified the association of mental health levels with safety environments, personal protective equipment, and coronavirus risk awareness. Methods: A total of 119 out of 428 from Daegu and Gyeongbuk took part in this study. The statistical analysis methods were the t-test, ANOVA, Pearson's correlation analysis and multiple regression analysis. Results: In a multiple regression analysis, females (β=-.137, p=<.001) showed a higher relevance to negative mental health than males. The moderate satisfied (β=-.088, p=.014) and dissatisfied (β=-.147, p=.006) showed a higher relevance to negative mental health than higher satisfied. Moderate stress perception (β=-.199, p=<.001) and higher stress perception (β=-.414, p=<.001) showed a higher relevance to negative mental health than lower stress perception. Corona-virus risk awareness (β=-.050, p=.045) was related to negative mental health and safety environment (β=.136, p=<.001). Personal protective equipment (β=.147, p=<.001) were related to positive mental health. Conclusion: Conclusively, it is necessary to develop and implement high-quality intervention programs using significantly influencing variables to impact the mental health of 119 paramedics.

• Safety and Health at Work
• /
• v.13 no.2
• /
• pp.180-186
• /
• 2022

Background: In occupational studies, it is a known situation that technical and organizational attempts are used to prevent occupational accidents. Especially in the mining sector, if these attempts cannot prevent occupational accidents, personal protective equipment (PPE) becomes a necessity. Thus, in this study, the main objective is to examine the effects of the variables on the use of PPE and identify important factors. Methods: A questionnaire was implemented and structural equation modeling was conducted to ascertain the significant factors affecting the PPE use of mining employees. The model includes the factors that ergonomics, the efficiency of PPE and employee training, and PPE usage habit. Results: The results indicate that ergonomics and employee training have no significant effect (p > 0.05) on the use of PPE. The efficiency of PPE has a statistically meaningful effect (p < 0.05) on the use of PPE. Various variables have been evaluated in previous studies. However, none of them examined the variables simultaneously. Conclusion: The developed model in the study enables to better focus on ergonomics and employee training in the PPE usage. The effectiveness of a PPE makes its use unavoidable. Emphasizing PPE effectiveness in OHS training and even showing them in practice will increase employees' PPE usage. The fact that a PPE with high effectiveness is also ergonomic means that it will be used at high rates by the employee.

• Journal of the Korea Institute of Building Construction
• /
• v.23 no.1
• /
• pp.81-92
• /
• 2023

According to the 2020 industrial accident reports of the Ministry of Employment and Labor, the number of fatal accidents in the construction industry over the past 5 years has been higher than in other industries. Of these more than 50% of fatal accidents are initially caused by fall accidents. The central government is intensively managing falling/jamming protection device and the use of personal protective equipment to eradicate the inappropriate factors disrupting safety at construction sites. In addition, although efforts have been made to prevent safety accidents with the proposal of the Special Act on Construction Safety, fatalities on construction sites are constantly occurring. Therefore, this study developed a model that automatically detects the wearing state of the worker's safety helmet and belt using computer vision technology. In considerations of conditions occurring at construction sites, we suggest an optimization method, which has been verified in terms of the accuracy and operation speed of the proposed model. As a result, it is possible to improve the efficiency of inspection and patrol by construction site managers, which is expected to contribute to reinforcing competency of safety management.

• Journal of radiological science and technology
• /
• v.41 no.6
• /
• pp.581-586
• /
• 2018

This study was conducted to analyze factors Influencing Protective Behavior against Radiation Exposure using questionnaires for 231 radiological technologists working in Computed Tomography(CT) examination room with high radiation dose in diagnostic radiology field. Statistical analysis of the collected data revealed that the reasons for partially shielding the examination part in the CT scan were the lack of protective equipment, securing of radiation justification, being annoying and maybe not being harm to adults in order. It was also revealed that the variables influencing the protective behavior were protective behavior against radiation harm, self-efficacy, protective environment, organization culture, protective knowledge and protective instrument in order. The higher the radiological protective environment(${\beta}=0.245$) and the lower the radiological protective knowledge(${\beta}=-0.034$), the more influential the protective behavior against radiation harm was. In this study, it was shown that non examination parts were not shielded in the CT scan. Therefore, it is necessary to improve the level of protective environment, to cultivate knowledge to improve the protective behavior against radiation harm and to have an intervention strategy for concrete action.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2004.11a
• /
• pp.616-619
• /
• 2004

Lightning surge damages of low voltage equipments in building are increasing due to increase in electrical and communication networks in the information-oriented society. And electronic equipments contained electrical circuits with semiconductor are very weak against lightning surge. The surge protective devices for electronic circuit in electronic equipments and AC power lines are becoming more widely. To achieve effective method of surge protection, there are needs for correlation between lightning surge protective effect of electronic equipment and installation method of surge protective device. This paper describes as a result of experiments for correlation between lightning surge protective effect and installation method of surge protective device.

• Journal of Korean society of Dental Hygiene
• /
• v.13 no.3
• /
• pp.369-376
• /
• 2013

Objectives : The objectives of this study is to investigate the handwashing and use of personal protection equipment in dental hygienists and provide the basic data for dental infection control guideline. Methods : A questionnaire survey was performed in the dental hygienists who participated in the continuing education by the Daejeon City Commission in October 2012. The collected data were analyzed using PASW 18.0. Results : Handwashing was well practiced in group working for 3 to 5 years of employment. Those who took the infection cnotrol training used liquid soap, paper towel, dental mask, protective goggles, face shield, and gloves. Conclusions : Infection control is the most important practice in dental hygienists. So it is necessary to emphasize the inportnace of personal protection equipment including medical gloves, dental mask, and goggles.