A Study on the Relational Analysis of Human Errors in Railway Accidents

Byeoung-Soo YUM(Byeoung-Soo YUM),Tae-Yoon KIM(Tae-Yoon KIM),Jong-Uk WON(Jong-Uk WON),Chi-Nyon KIM(Chi-Nyon KIM),Won-Mo GAL(Won-Mo GAL) 한국웰빙융합학회 2024 웰빙융합연구 Vol.7 No.1

Purpose: This study examines the persistent occurrence of railway accidents despite numerous safety devices, highlighting the multifaceted nature of these incidents. Research design, data and methodology: Utilizing the 4M analysis method, the research investigates a decade’s worth of accident reported from the Aviation and Railway Accident Investigation Board to identify risk factors and suggest mitigation measures. Results: The analysis reveals that 57% of railway accidents are attributed to human factors, followed by mechanical (28%), environmental (7%), and management (8%) factors. Conclusions: The study underscores the necessity of prioritizing safety and establishing a unified organizational approach to prevent human error accidents. It calls for an alignment of risk perception between headquarters and field operations, advocating for educational and perceptual changes, as well as systematic improvements to achieve safety goals.

A Study on the Cause Analysis of Human Error Accidents by Railway Job

Byeoung-Soo YUM(Byeoung-Soo YUM),Tae-Yoon KIM(Tae-Yoon KIM),Sun-Haeng CHOI(Sun-Haeng CHOI),Won-Mo GAL(Won-Mo GAL) 한국웰빙융합학회 2024 웰빙융합연구 Vol.7 No.1

Purpose: This study investigates human error accidents in the Korean railway sector, emphasizing the need for systematic management to prevent such incidents, which can have fatal consequences, especially in driving-related jobs. Research design, data and methodology: This paper analyzed data from the Aviation and Railway Accident Investigation Board and the Korea Transportation Safety Authority, examining 240 human error accidents that occurred over the last five years (2018-2022). The analysis focused on accidents in the driving, facility, electric, and control fields. Results: The findings indicate that the majority of human error accidents stem from negligence in confirmation checks, issues with work methods, and oversight in facility maintenance. In the driving field, errors such as signal check neglect and braking failures are prevalent, while in the facility and electric fields, the main issues are maintenance delays and neglect of safety measures. Conclusions: The paper concludes that human error accidents are complex and multifaceted, often resulting from a high workload on engineers and systemic issues within the railway system. Future research should delve into the causal relationships of these accidents and develop targeted prevention strategies through improved work processes, education, and training.

사고분석을 이용한 철도안전시스템에 관한 연구

염병수 ( Byeoung Soo Yum ),갈원모 ( Won Mo Gal ) 대한설비관리학회 2015 대한설비관리학회지 Vol.20 No.1

Since the railway is a fundamental infrastructure of national industry, railway safety management plays in both public safety and national competitiveness. In order to secure railway safety, a system which manages hazard prevention and reactive action management is very important. For these reasons, this paper will seek to construct railway safety big-data from precursor and data abstract, develops an intelligent hazard prediction system for prevention of railway accidents based on data modeling and information analysis platform, and finally achieves standardized interface and information provider system for interaction between railway safety systems and sharing information.

A Study on the Development of Safety Management Checklist Using Accident Case adjacent to Railway Operation

Sang-Hwan Ryu,Byeoung-Soo Yum,Won-Mo Gal 한국유통과학회 2018 The Journal of Industrial Distribution & Business( Vol.9 No.10

Purpose - This thesis is to develop a management plan and checklist by analyzing the prevention of accidents in advance by presenting the management plan for the major causes of railway accidents. Research design, data and methodology - In recent 5 years, we have analyzed the cases of railway accident, presented the management plan for the accident, and made a practical safety checklist focusing on the main measures according to the management plan. Results - The analysis of the cases of near-railway accidents suggests more concrete and practical safety management measures because the similar accidents are continuously occurring due to formal safety management. Conclusions - It is more valuable to apply to the adjacent construction of the railway line by creating a detailed checklist based on cases rather than the existing checklist. This study is written only as a human factor. For future real - time safety management, it is necessary to study more precisely cause analysis and safety equipment as a big data - based safety control system for more systematic safety management.

Inhibitory Effects of Curcuminoids on 17β-hydroxysteroid Dehydrogenase Type 1 Activity in Animal Livers

Sung-Eun Lee,Byeoung-Soo Park,Hye Jin Kim,Eun-Woo Lee,Jong Hwa Yum 대한의생명과학회 2013 Biomedical Science Letters Vol.19 No.2

17-β-hydroxysteroid dehydrogenase type 1 (17β-HSD type 1) mediates the reaction of 17β-estradiol (E2) production from estrone (E1). Inhibitory effects of curcuminoids on 17β-HSD type 1 activity were investigated to find a lead compound for treating estrogen-dependent diseases including breast cancer. Among curcuminoids, demethoxycurcumin showed potent inhibitory effect (IC50 = 2.7 μM) on mouse 17β-HSD type 1. Curcuminoids also displayed their inhibitory effects on the production of 17α-estradiol which is a carcinogenic metabolite produced by the enzyme. Bisdemethoxycurcumin (IC?? = 1.3 μM) showed potent inhibitory effect on the 17α-estradiol production by chicken 17β-HSD type 1. Curcuminoids did not inhibit ERE transcriptional activity with and without E2. Taken together, curcuminoids can be used for treating and preventing E2-dependent diseases via inhibition on 17β-HSD type 1 activity.

Proteomic evaluation on antiplatelet activity of piperlongumine derived from Piper longum

Lee, Sung-Eun,Park, Byeoung-Soo,Huh, Tae-Lin,Lee, Eun-Woo,Yum, Jong-Hwa The Korean Society of Toxicogenomics and Toxicopro 2010 Molecular & cellular toxicology Vol.6 No.3

Piperlongumine (PL) abundantly present in Piper longum fruits strongly inhibited platelet cell aggregation. Proteomic studies using two-dimensional polyacrylamide gel electrophoresis (2D-PAGE) and LC-MSIMS analysis showed that PL inhibited collagen-induced aggregation in rabbit platelet cells induced by collagen. Addition of PL protected aggregation of rabbit platelet cells from collagen induction and mediated proteomic changes as 33 proteins decreased and 24 proteins increased. Coagulation factor and fibrinogen were down-regulated and they are involved in aggregation of the platelet cells. Antithrombogenic effect of PL was determined using mice with an i.v. injection of a mixture of collagen and epinephrine. Protection rate of PL on thrombogenic effect of the mixtures was up to 47.9% and it was 8.6% higher than that of aspirin. Taken together, these results strongly suggest that PL is considered as a potent medicine for treating unexpected platelet cell aggregation.

Original Article: Bioactive Materials : L-glutamine:D-fructose-6-phosphate Aminotransferase as a Key Protein Linked to Multidrug Resistance in E. coli KD43162

( Sung Eun Lee ),( Tae Jeon Jung ),( Byeoung Soo Park ),( Byung Woo Kim ),( Eun Woo Lee ),( Hye Jin Kim ),( Jong Hwa Yum ) 한국응용생명화학회 2015 Journal of Applied Biological Chemistry (J. Appl. Vol.58 No.3

A microarray study has been employed to understand changes of gene expression in E. coli KD43162 resistant to ampicillin, ampicillin-sulbactam, piperacillin, piperacillin-tazobactam, cefazolin, cefepime, aztreonam, imipenem, meropenem, gentamicin, tobramycin, ciprofloxacin, levofloxacin, moxifloxacin, fosfomycin, and trimethoprim-sulfamethoxazole except for amikacin using disk diffusion assay. Using Sodium dodecyl sulphate-polyacrylamide gel electrophoresis and MALDI-TOF MS analyses, 36 kDa of outer membrane proteins (OMPs) was found to be deleted in the multidrug resistant E. coli KD 43162. Microarray analysis was used to determine up- and down-regulated genes in relation to multidrug resistant E. coli KD43162. Among the up-regulated genes, these genes were corresponded to express the proteins as penicillin-binding proteins (PBPs), tartronate semialdehyde reductase, ethanolamine utilization protein, shikimate kinase I, allantoinase, predicted SAM-dependent methyltransferase, Lglutamine: D-fructose-6-phosphate aminotransferase (GFAT), phosphoglucosamine mutase, predicted N-acetylmannosamine kinase, and predicted N-acetylmannosamine-6-P epimerase. Up-regulation of PBPs, one of primary target sites of antibiotics, might be responsible for the multidrug resistance in E. coli with increasing amount of target sites. Up-regulation of GFAT enzyme may be related to theup-regulation of PBPs because GFAT produces N-acetylglucosamine, a precursor of peptidoglycans. One of GFAT inhibitors, azaserine, showed a potent inhibition on the growth of E. coli KD43162. In conclusion, up-regulation of PBPs and GFATs with the loss of 36 kDa OMP refers the multidrug resistance in E. coli KD 43162.

철도종사자의 안전도 향상을 위한 HSE영역의 위험요인 도출에 관한 연구

최진유 ( Jinyu Choi ),박찬우 ( Chanwoo Park ),염병수 ( Byeoung Soo Yum ) 대한설비관리학회 2021 대한설비관리학회지 Vol.26 No.4

The railway safety in Korea is improving to the level of advanced countries by the development of railway safety technology, the introduction of advanced systems, and continuous interest and budget investment from government, etc. However the safety level of railway staffs is still not improved compared to the improvement of the safety level in the railway sector. In this study, basic research was conducted to introduce a staff safety management system that comprehensively considered health-safety-environment (HSE) in order to improve the safety level of staffs in the railway field. The working area in railway is divided into sales, passenger service, vehicle maintenance, infra structure maintenance, and electric facility maintenance. And also the risk factor for each working area is derived for the health area, the safety area, and the environment area. In addition, in order to improve the understanding of the application of HSE, some examples of deriving risk factors in the HSE area for each work area for a light rail worksites. Finally, a plan for expanding HSE application to improve the safety of railway staffs was suggested.

휴먼에러 사고분석을 통한 DMI프로그램개발에 관한 기초연구

갈원모 ( Won-mo Gal ),염병수 ( Byeoung-soo Yum ),권우택 ( Woo-taeg Kwon ) 대한설비관리학회 2016 대한설비관리학회지 Vol.21 No.4

With a goal to establish a human error prevention system, the Ministry of Land, Infrastructure and Transport is currently devising a countermeasure to minimize human errors by establishing a railway safety innovation plan with key contents including national R&D expansion for railway safety technology development. Rolling stocks are playing a pivotal role among Korea`s urban transportation and also as a distinct means of public transportation. However, the layout inside a train operating room, such as locations and operating methods of devices, is differently designed according to the types of rolling stocks, operational tracks, signaling methods and display installation. This leads to a failure in prompt handling of unexpected situations and, accordingly, frequent occurrence of human errors that lead to accidents. Therefore, it is becoming urgently necessary to ensure safety for railway transportation. This study was aimed at developing a DMI program through accident analysis for the purpose of human error accident prevention.

휴먼에러 저감을 위한 도시철도 운전실 레이아웃 표준화 연구

갈원모 ( Won-mo Gal ),염병수 ( Byeoung-soo Yum ) 대한설비관리학회 2021 대한설비관리학회지 Vol.26 No.2

Currently, locomotive cabs' layout differ depending on the type of train vehicles. In order to reduce human error of drivers, systematic research including analysis of the working conditions of urban railroads in Korea and standardization measures are needed accordingly. Through the survey of 247 drivers working Seoul Metro Lines 1, 2, 3 and 4 and interview with related experts, we will identify areas of vulnerability in the driver human error. Many drivers felt uncomfortable with the distinction between the handling buttons, the distance between switches, the movement and function, and the arrangement by operation frequency, It was also able to identify difficulties in identifying the display and operation by color and symbol when handling the control device, as the viewing range and physical conditions differed.