• Title/Summary/Keyword: Carelessness

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Risk factors of fisher on stow net fishing vessel using analysis of adjudication (재결서 분석을 통한 안강망어선에 승선하는 선원의 위험요인)

  • KIM, Wook-Sung;HYUN, Yun-Ki;LEE, Yoo-Won
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.56 no.2
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    • pp.155-162
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    • 2020
  • The adjudication of Korean Maritime Safety Tribunal (KMST) was analyzed to collect basic data to identify the cause of the risk that did not appear in the current data provided by the fishermen's occupational accidents of the National Federation of Fisheries Cooperative (NFFC) in stow net fishing vessel from 2015 to 2019. The personnel's carelessness was the most common in 29 out of 33 accidents (87.9%), followed by 25 cases (75.8%) of inadequacy of instructions, 24 cases (72.7%) of inadequacy of education on hazard factor, 20 cases (60.6%) of no personal protection equipment, 18 cases (54.5%) of poor guard, 17 cases (51.5%) of inadequacy of work method, 16 cases (48.5%) of absence of emergency stop button, 14 cases (42.4%) of work practice of poor safety precautions that affected more than 40% of all accidents as accident causes. These causes had a strong influence on each other, and the ratio of accident causes is high. With this relationship, accidents can be prevented or the severity of human injury can be reduced if types of accident process can be estimated with a scenario, and the key points before the accident in the scenario are switched to safe points.

Risk awareness survey of fisher on stow net fishing vessel using a questionnaire (설문을 통한 안강망어선에 승선하는 선원의 위험인식 조사)

  • HYUN, Yun-Ki;KIM, Hyung-seok;LEE, Yoo-Won
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.56 no.2
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    • pp.147-154
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    • 2020
  • The questionnaire survey was carried out to collect basic data to identify the cause of the risk that did not appear in the current data provided by the fishermen's occupational accidents of the National Federation of Fisheries Cooperative (NFFC) to the onsite specialist, such as a fishing master, chief engineer and fisher in stow net fishing vessel from June to July 2018. The results are as follows. A total of 134 cases were surveyed, including 53 cases in Yeosu, 44 cases in Mokpo, 30 cases in Boryeong and 7 cases in Gunsan. Approximately 60% of the respondents on board the stow net fishing vessel were more than 20 years old, and the boarding experience was seasoned and suitable for the respondents. In the 4M analysis by safety accident factor during fishing work, the mechanical factors included 51 cases (25.0%) of decrepit equipment or poor maintenance and 49 cases (24.0%) of systemic error of fishing equipment. The environmental factors exhibited 71 cases (33.5%) of poor communication by mixed manning of foreign fishermen and 63 cases (29.7%) of poor environment such as heavy weather etc. The human factors showed 78 cases (37.3%) of personnel's carelessness and 45 cases (21.5%) of unskillfulness of operating net and haulers. The management factors exhibited 59 cases (32.1%) of work practice of poor safety precautions and 56 cases (30.4%) of inadequacy of education on hazard factor. The results are expected to contribute to the creation of a safe operating environment for stow net fishery, such as a fisher boarding a stow net fishing vessel, enabling the analysis of major causes of working safety accidents by cause.

A research for improvement methods in the aspect of safety engineering through risk analysis of facilities for multiple use - Focused on escalator and passenger conveyors - (다중이용시설물 위험분석을 통한 안전공학적 개선 방안에 관한 연구 (에스컬레이터 및 수평보행기를 중심으로))

  • Kwon, Sun-Geol;Kim, Jin-Soo;Kim, Chang-Eun
    • Journal of the Korea Safety Management & Science
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    • v.15 no.1
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    • pp.31-40
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    • 2013
  • For the matter of elevator, one of the multi-use facilities for unspecified public, the JIS has re-established and reformed to apply to the environment in South Korea for the past 20 years. In the aspect of safety assurance, it was inevitable to suggest improved measures. The government, Ministry of Public Administration and Security has secured the safety by enhancing the safety management functions in the elevator inspection standards and expanding its safety device measures. Further, the international inspection standard has been introduced, which is about unifying inspection standard system into the international standard code. In March 14th 2012, the international standard (EN) has been amended and fully announced. Escalator and passenger conveyor among lift devices have several common danger factor that cause safety accident. First, the accident caused by decreased braking power of brake. Second, the accident caused by the rate difference between handrail and tread-board. Third, the accident caused by defects of contraflow preventing device or carelessness inspection. Fourth, the accident caused by wet tread-board or wet floor of platform which makes passenger slip and fall. As the improvements to prevent and reduce these negligent accidents, the inspection list to check and methods should be subdivided and applied for each accident likelihood cause for safety management enhancement and safety assurance of existing escalator and passenger conveyors. The escalators and passenger conveyors without safety devices in existence should be obliged to modify the part of the system or install additional safety device. With making these measures obligations, it requires to improve the system to be suitable for the international inspection standard and to have measures to prevent safety accidents. It also needs to arrange improvements for skid accident of tread-board by the external environment factors such as snow and rain.

A Study on a Safety System for Preventing Atmospheric Diffusion of Hazardous and Noxious Chemicals in Dike (방유벽 내 위험·유해화학물질 대기 확산 방지를 위한 안전시스템 연구)

  • Lee, Deok-Jae;Song, Chang-Geun
    • Fire Science and Engineering
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    • v.33 no.4
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    • pp.97-104
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    • 2019
  • Behind the growth of the chemical industry which is a cornerstone of the Korean economy, dozens of hazardous and noxious chemical accidents occur every year, resulting in enormous casualties and environmental damages. Many cases among chemical accidents are caused by the carelessness of workers in handling facilities such as hydrochloric acid and hydrofluoric acid, and the aging of handling facilities. In order to mitigate the damage by such chemical accidents, a safety system for preventing atmospheric diffusion of hazardous and xoxious chemicals in dike was proposed. The atmospheric diffusion prevention safety system consists of leak detection phase, alarm and measurement phase, suppression and blocking phase. Through the proposed the atmospheric diffusion prevention safety system, the need for 2nd chemical accident prevention such as atmospheric diffusion in dike can be posed.

Sprinkler Layout Optimization Based on Fire Simulation and Mathematical Programming including Installation and Damage Costs (설치비와 피해액의 정형화를 통한 화재 시뮬레이션 및 수리계획법에 기반을 한 스프링클러의 배치 최적화)

  • Lee, Ki-Jun;Shin, Young-Sup T.;Hong, Gi-Hoon;Joo, Ki-Don;Shin, Dong-Il;Kim, Tae-Ok
    • Journal of the Korean Institute of Gas
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    • v.16 no.2
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    • pp.52-59
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    • 2012
  • The sprinkler system is regarded as the most effective fire extinguishing system. In this study, we proposed a sprinkler layout optimization framework based on fire simulation and mathematical programming. As a case study, the target space in the form of ordinary residence was set up with the size of $5.2m(L){\times}5.4m(W){\times}2.4m(H)$, and we constructed the fire scenario that polyurethane couch was ignited through carelessness. And we simulated and analyzed fire speed, temperature change and heat release rate according to the type and number of sprinklers installed. Through the formulation of installation and damage costs depending on sprinklers, the sprinkler layout showing optimal performance was resulted from mathematical programming.

Hands-on Tools to Prevent Human Errors in Highway Construction (고속도로 건설현장의 인적오류 예방을 위한 실무자용 도구 개발)

  • Kim, Jung-Yong;Yoon, Sang-Young;Cho, Young-Jin
    • Journal of the Ergonomics Society of Korea
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    • v.30 no.1
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    • pp.19-28
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    • 2011
  • Objective: The aim of this study is to reclassify human errors and to develop hands-on tools to apply the new classification for preventing human error accidents in highway construction site. Background: The main cause of accidents in highway construction was reported as the carelessness of workers. However, such diagnosis could not help us operationally prevent accidents in real workplace. Method: The accidents in highway construction were reanalyzed and the causes of human error were reclassified in order to educate and improve the awareness of human error in highway construction. Field survey and interview with safety managers and workers were conducted to find the causal relationship between the actual accidents and the human errors. Results: The most frequently observed human errors in highway construction were classified into six categories such as mis-perception, distraction, memory fail, slip, cognition error and mis-judgment. In order to provide hands-on tools to increase the awareness of human error in construction field, the human error checklist and card sorting diary were developed. Especially, the card sorting diary was designed to increase the ability in human error inspection of safety manager at construction site. Moreover, posters were developed based on actual accident cases. Conclusion: We suggested that the improved awareness and analytical report on checklist, card sorting diary and posters for construction field could collectively prevent the accident. Application: The classification of human error, hands-on tools and posters can be directly applicable on highway construction site. This analytical and collective approach preventing human error-related accident could be extended to other construction workplaces.

MINI-IMPLANTS TO RESTORE MISSING TEETH IN SEVERE RIDGE DEFICIENCY AND SMALL INTERDENTAL SPACE (치조정 골 소실이 심한 경우와 치간 사이 공간이 부족한 경우에서의 미니 임프란트 식립)

  • Seo, Mi-Hyun;Yoo, Chung-Kyu;Lee, Eun-Kyung;Jung, Da-Unn;Suh, Je-Duck;Chung, Il-Hyuk
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.31 no.1
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    • pp.67-70
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    • 2009
  • Purpose: This study presents the use of mini implants for fixed restoration and implant supported overdenture to enable the practitioner to overcome the anatomic obstacles of ridge width and narrow interdental space. Patients and methods: This study consisted of 9 patients who required single implants for one or two teeth replacement and 1 patient who required implant supported overdenture after mandiblectomy, iliac bone graft due to ghost cell tumor. The ages ranged from 29 to 70 years (mean 51). All patients were in good health. Clinical and radiographs were taken pretreatment, postoperatively, during rehabilitation, and at follow ups. Results: Total implant survival rate was 94.7%. One implant was removed due to its mobility as a result of bad bone quality (Type IV) and patient's carelessness (Heavy smoker). All patients except one reported complete satisfaction regarding to function, aesthetics, and phonetics. Radiographic follow up every 3months postoperatively showed success in achieving function and maintaining marginal bone level. Conclusion: Clinician can overcome both severe ridge deficiency and small interdental space with mini implant.

(A) Study on the Status of Safety Accidents in School : among the elementary, middle and high schools in Chung-Nam (학교안전사고 발생현황 및 융·복합적 원인에 대한 연구 - 충남지역 초, 중, 고등학교를 중심으로 -)

  • Kim, Yeon-Jung;Yi, Su-Jeong
    • Journal of Digital Convergence
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    • v.14 no.7
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    • pp.243-250
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    • 2016
  • The purpose of this study is to prevent school safety accidents by conducting an analytic investigation on safety accidents that occur in elementary, middle and high school during 2010-2014 in Chung-Nam. We used the status of safety accidents in school based on the Chung-nam School Safety and Insurance Association database. Data was analyzed by descriptive Statistics. It was found that the incidence of safety accidents in school has increased, and in the case of elementary schools it was higher than in middle school or high school. Safety accidents occurred most during break time, and in schoolyard, and due to student's carelessness. Safety is one of the most basic human needs. To decrease the incidence of safety accidents, we need to set up with comprehensive safety system including human, physical and environmental factors. Based on the this study, it needs more wide study on various countermeasures and to determine effects.

Status of Researchers' Safety Consciousness and It's Improvement Measures in Government-Supported Research Institutes (정부출연연구기관 연구원의 안전의식 실태 및 제고방안)

  • Kim, Kyung-Chun;Lee, Dong-Hyung
    • Journal of the Korea Safety Management & Science
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    • v.14 no.1
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    • pp.15-22
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    • 2012
  • The statistics of the safety accidents in labs show that the biggest reason for them is researchers' carelessness and insecure actions. In this way, the safety accidents in labs are affected a lot by researchers' safety consciousness. Therefore, in order to prevent the safety accidents in labs, this study aims at measuring the degree of researchers' safety consciousness, grasping the elements affecting their safety consciousness and suggesting the measures to improve the lacking safety consciousness. To accomplish this goal, a survey was conducted and analyzed on the safety consciousness of 1,226 researchers working at 10 government- supported research institutes in Daedeok R&D Complex. As a results, the measures to improve researchers' safety consciousness will be suggested as follows. First, in an environmental aspect, improvement of labs' environment exposed to danger, interest and participation of CEO, regular discussion on the safety in labs, installment of safety equipments in labs, and enlargement of individual labs are necessary. Second, in an educational aspect, the safety education offered by institutes need to be enhanced, experiential safety education fit for the characteristics of research should be applied, the time for safety education must be observed, and the communication among team members through the collective education in department units and safe culture through the campaigns to enhance safety consciousness have to be established. Third, in a systematic aspect, sanctions have to be imposed on the researchers who do not attend safety education, the number of safety supervisors and safety budget of labs should be increased, a safety certification system need to be introduced when a lab is built, the problems in safety have to be open to all departments and rewards for the persons of merit in labs should be extended.

A Study on Status and Accuracy of Underground Facilities Maps (지하시설물도 현황 및 정확도 분석에 관한 연구)

  • Lee, Yong-Wook;Heo, Min;Lee, Jae-One;Bae, Kyoung-Ho
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.25 no.3
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    • pp.223-230
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    • 2007
  • As the centralization of city, underground facilities is increasing and being more important. Although the importance of underground facilities map has been emphasized, there were many accidents related underground facilities. The inaccuracy of existing data and the carelessness of management caused many accidents. It is very important to update and to have high quality accuracy of underground facilities maps. But the underground facilities maps are mapped and updated by each institutes. So it is difficult to verify the accuracy of the data. In this study, Field Test is performed to analyze the horizontal accuracy of existing maps using Electromegnetic Induction Method, Total Station and GPS. Surveying of underground facilities in Seoul was performed for 6 institutes of underground facilities during 3 years. The aim of this study is to verify the horizontal accuracy of data and to improve the accuracy of underground facility maps. As the result of analysis, the horizontal accuracy of 6 underground facilities management institutes is 73 cm(2004), 78 cm(2005) and 75 cm(2006).