• 한국안전학회지
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• 제33권1호
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• pp.118-127
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• 2018

The study aims present data collection on the current state of safety and safety consciousness in universities' laboratories to verify the relation between investigation factors and further draw implications. The first finding is that laboratories with high risk level do not have better safety management performance than those with lower risk level. Secondly, labs that experienced accidents has a higher level of control than those without any. Regarding to the university's acceptance of safety requirements, the group with a high level of risk awareness or accidents were concerned that their universities did not provide sufficient support in safety management. It means that safety is low on the list of priorities in Universities' overall agenda and individual labs are responsible of their own safety. Most of the causes of accidents in the labs are man-made than physical errors. It requires that continuous safety educations and measures through safe research activities are means to eliminate and reduce the individual's safety frigidity. Through the survey, it is known that current education's system and contents are too generalized to reflect the characteristics of each laboratory. Thus, it is difficult to recognize various risk situations and to actually prevent safety accidents. Therefore, it is necessary to shift to customized curriculum and system for various major fields.

• 한국수소및신에너지학회논문집
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• 제31권5호
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• pp.453-458
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• 2020

In this study, ethylene-propylene-diene monomer (EPDM) rubbers reinforced with various particle size of carbon black were prepared and tested. We followed recently published CSA/ANSI CHMC2 standard "the test methods for evaluating material compatibility in compressed hydrogen applications-polyemr". Measurement of change in hardness, tensile strength and volume were performed after exposure to maximum operating pressure, 87.5 MPa, for 168 hours (1 week). Once EPDM was exposed to high-pressure hydrogen, the samples experience volume increase and degradation of the physical properties. Also, after the dissolved hydrogen was fully eliminated from the specimens, the hardness and the tensile properties were not recovered. The rubber reinforced with smaller sizes of carbon black particles showed less volume expansion and decrease of physical properties. As a result, smaller particle size of carbon black filler led to more resistance to high-pressure hydrogen.

• 중환자간호학회지
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• 제15권2호
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• pp.1-13
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• 2022

Purpose : The study aimed to identify relationship among intensive care unit (ICU) nurses' critical thinking disposition, medication error risk level of high-alert medication, and medication safety competency, as well as the factors affecting medication safety competency. Methods : The participants were 266 ICU nurses of one higher-tier general hospital and one general hospital in Province. The data were collected using structured self-administered questionnaire from August 10 to August 31, 2021. Measurements included the critical thinking disposition questionnaire, nurses's knowledge of high-alert medication questionnaire, the medication safety competency scale. Data were analyzed using hierarchical multiple regressions using SPSS/WIN 28.0. Results : In the multiple regression analysis, the medication safety competence has a statistically significant correlation with the working department, the critical thinking disposition, and medication error risk level of high-alert medication. Conclusion : Based on the results of this study, it is suggested to develop and apply an educational strategy that can strengthen the knowledge and skills of critical thinking disposition and medication error risk level of high-alert medication to improve the ICU nurse's medication safety competency.

• 한국기계가공학회지
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• 제17권6호
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• pp.151-157
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• 2018

In this study, we have developed a composite pressure vessel that is compact and can store refrigerant at high pressure to increase the refrigerant volume. The composite pressure vessel is made of aluminum-based duralumin, which has high rigidity and excellent elongation in the inner liner, considering the characteristics of products in the aerospace and defense industry, where the safety of the applied product is considered as a priority. High strength carbon fiber was applied to the outside. In order to evaluate the performance of the developed product, burst test and cycling test were carried out. In burst test, an excellent safety margin equivalent to 2.7 times the operating pressure was obtained. In cycling test, a stable failure mode in which 'pre-burst leak' occurs is proved and the soundness of the product is proved.

• International Journal of Internet, Broadcasting and Communication
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• 제16권2호
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• pp.255-266
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• 2024

The purpose is to evaluate evacuation safety by simulating the toxic effects of hydrogen fluoride leaks in areas surrounding national industrial complexes and to suggest alternatives for areas that do not satisfy evacuation safety. For human casualties caused by hydrogen fluoride leakage accidents, Available Safe Egress Time (ASET) is calculated by the toxic effects quantified with the Areal Locations of Hazardous Atmospheres (ALOHA), an off-site consequence assessment program. The Required Safe Egress Time (RSET) is calculated through Pathfinder, an evacuation simulation program. Evacuation safety is assessed by comparing ASET and RSET. The ALOHA program was used to evaluate the time to reach AEGL-2 concentration in 12 scenarios. The Pathfinder program was used to assess the total evacuation time of the high school among specific fire-fighting objects. Of the 12 accident scenarios, ASET was larger than RSET in the worst-case scenarios 1 and 9. For the remaining 10 accident scenarios, the ASET is smaller than the RSET, so we found that evacuation safety is not guaranteed, and countermeasures are required. Since evacuation safety is not satisfactory, we proposed to set up an evacuation area equipped with positive pressure equipment and air respirators inside specific fire-fighting objects such as the high school.

• 한국가정과교육학회지
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• 제19권3호
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• pp.119-131
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• 2007

본 연구는 춘천 지역에 소재한 고등학교 1학년 540명(남학생 264명, 여학생 276명)을 대상으로 식품 안전성에 대한 기본 인식을 알아본 것이다. 식품안전 상태에 대해서 49.4%의 학생들이 우려하고 있었으나 40.0%는 식품안전성에 대해 관심이 없는 것으로 나타났다. 식품안전에 대한 정보는 대부분이 대중매체를 통해서 접했고, 식품안전 사고의 발생이유는 식품을 생산하거나 유통시키고 판매하는 관련자들의 책임의식이 부족하기 때문이라고 인식했다. 또한 식품의 안전을 위협하는 가장 큰 요인으로는 중금속(24.8%)이 가장 높았고, 다음으로는 환경호르몬(24.4%), 식품첨가물(17.0%)이라고 하였다. 잔류농약이 가장 우려되는 식품은 채소 및 과일류이고, 농산물은 잔류농약 때문에 안전하지 못하며 92.4%의 학생들은 잔류농약이 인체에 해롭다고 인식하였다. 중금속에 의한 식품의 오염 인식도에서는 87.4%가 안전하지 못하다고 했으며 중금속에 의해 가장 우려되는 식품은 생선류로 나타났다. 또한 가공식품에 대해 가장 불안하게 여기는 요인은 식품첨가물이었고 대부분의 학생들이 식품의 포장재료나 용기에 대해 유독하다고 생각했다. 식품구입시 식품안전성을 확인하는 학생은 25.0%뿐이고, 식품을 구입할 때 식품안전성 여부를 확인한다는 학생이 식품의 안전성을 중요시하는 비율이 높았으며 식품안전성 여부를 확인하지 않는 학생은 비교적 맛을 중요시하는 것으로 나타났다.

• 한국안전학회지
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• 제35권5호
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• pp.86-94
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• 2020

Portable ladders are normally used both as an access tool for ascending and descending and as a platform for high place work. Though convenient, such usages make the portable ladders vulnerable to fall accidents. For this reason, many safety systems such as regulations and certifications are implemented to prevent fall accidents of portable ladders. However, nevertheless of those safety systems in Korea, annual death tolls of ladder fall accidents has remained high, and which suggests modification and improvement of the portable ladder related safety systems in Korea. The aim of this study is to propose directions for improving safety systems to effectively prevent fall accidents of portable ladders. To this end, comparative analysis on safety systems implemented in Korea and other countries including Japan, USA and UK are conducted to investigate the problems of Korean safety systems. Based on the analysis, limitations of Korean safety systems to prevent ladder fall accidents are discussed and tasks to overcome the limitations are proposed. Once implemented, the proposed tasks would contribute to prevent ladder fall accidents effectively.

• 대한소아치과학회지
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• 제51권2호
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• pp.109-131
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• 2024

This review aims to examine safety concerns in pediatric dental care and underscore the need for comprehensive patient safety initiatives within the Korean Academy of Pediatric Dentistry. Drawing insights from the prevailing patient safety policies of the American Academy of Pediatric Dentistry, case reports, and systematic reviews, this review elucidates issues such as dental fires during sedation, ocular complications from local anesthesia, and surgical emphysema. This review highlights the significance of safety toolkits encompassing infection control, medical error reduction, dental unit waterline infection, and nitrous oxide safety in pediatric dental settings, underscoring the need to foster a safety culture. Furthermore, this study explores the curriculum for pediatric dentistry residency programs, emphasizing concepts such as high-reliability organizations and mortality and morbidity conferences. The study suggests the need for initiatives to enhance patient safety, including establishing safety committees, expanding reporting systems, policy development, and supporting research related to patient safety. In conclusion, this study underlines key messages, emphasizing the utmost priority of patient safety, acknowledging the inevitability of human error, promoting effective communication, and cultivating a patient safety culture. These principles are vital for advancing patient safety in pediatric dental care and improving outcomes among pediatric patients.

• 한국수산과학회지
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• 제42권3호
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• pp.232-237
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• 2009

Norovirus surrogate (feline calicivirus) was inactivated by treatment at 50,000 psi for 60 sec by 6.8-$log_{10}TCID_{50}mL^{-1}$. Tissue obtained from oyster (digestive gland, gill and mantle) was qualitatively destroyed and distorted by treatment at pressure greater than 5,000 psi for 60 sec. High pressure treatment induced progressive changes in the color of the oyster adductor muscle. High pressure treatment effectively reduced norovirus surrogate but induced conformational changes in the tissue and color of oyster flesh.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2004년도 춘계공동학술대회 논문집
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• pp.581-585
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• 2004

The purpose of this study is to suggest a method to support decision making of researchers, when we estimate the safety of the high-speed railway using F-AHP. To apply this method, Korean type of high-speed railway was engaged, and the 8 Stages of accident type and the five criteria were suggested that we must meet. Then, the interview with the researchers working for high-speed railway was used to confirm the alternatives suggested. The employed F-AHP for this study estimate using emotional words based on AHP of Saaty, so it is very good to estimate the high-speed railway safety.