• 산업경영시스템학회지
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• 제44권3호
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• pp.50-63
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• 2021

There has been a steady rate of accident in Coal Thermal Power Plants which have relatively higher chance of mortality. However, neither the systematic view of safety management nor the methodology such as safety factors or system requirements are yet to be studied in detail. Therefore, this study aims to propose a methodology to preemptively deal with safety issues and to secure fact focused responsibility in safety. It consists of two main parts. First, the Safety Measurement Index(SMI) with total 50 factors is proposed by analyzing the key factors that contribute to safety accidents based on failure mode and effect analysis (FMEA) and quality function deployment (QFD). To analyze the safety requirements, index presented by major countries and organizations are discussed. Second, main features of intelligent CCTV are studied to determine their relative importance for the framework of Smart Safety Management System (SSMS). Main features are discussed with four technological steps. Also, QFD was held to analyze to analyze how key technologies deal with Quality Measurement Index(QMI). The research results of this study reveal that scientific approaches could be utilized in integrating CCTV technologies into a smart safety management system in the era of Industry 4.0. Moreover, this reasearch provides an specific approach or methodology for dealing with safety management in Coal Thermal Power Plant.

• 한국안전학회지
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• 제20권3호
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• pp.188-196
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• 2005

Accident reports from 1991 to 2000 of a steel company were used to analyze which factors induce industrial accidents. The subjects were 8,311 blue-collar workers, who sustained 114 occupational injuries and work on a continuous full-day 3-team 3-shift system of backward rotation(mornings to afternoons to nights). With respect to marital status, the occupational injury rate(OIR) on the married workers was significantly higher compared to unmarried workers. With respect to no, the OIR of those in their early 20s was significantly higher when compared to other age groups. The OIR of highly educated workers showed a reduction when compared with lower educated workers. The OIR of shift workers were significantly higher compared with the daytime workers. The OIR of type of work decreased across the steel manufacturing process, rolling process, machine maintenance section forwarding products section to the field management section. With respect to the block of shift work(morning, afternoon, and night shifts) by the type of work, the OIR of the night shift was higher than those of the morning shift in the steel manufacturing process or forwarding products section. The OIR of the machine maintenance section was slightly higher in the morning shift than those of the night shift. The OIR of the time of day of the shift workers reached a peak between 09:00 and 11:00. The OIR of a slight injury to shift workers decreased across the night, afternoon, to morning shifts whereas the OIR of a serious injury tended to decrease across the night, morning, to afternoon shift. The body parts most commonly injured were the arm and the crus.

• 한국산업보건학회지
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• 제25권2호
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• pp.134-145
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• 2015

Objectives: An objective of this study was to perform a risk assessment and social cost-benefit analysis for revising permissible exposure limits for seven substances: Nickel(Insoluble inorganic compounds), benzene, carbon disulfide, formaldehyde, cadmium(as compounds), trichloroethylene, touluene-2,4-diisocyanate. Materials and Methods: The research methods were divided into risk and hazard assessment and cost-benefit analysis. The risk and hazard assessment for the seven substances consists of four steps: An overview of GHS MSDS(1st), review of document of ACGIH's TLVs (2nd), comparison between international occupational exposure limits and domestic permissible exposure limits(3rd), and analysis of excess workplace and excess rate for occupational exposure limits based on previous work environment measurement data(4th). Total cost was estimated using cost of local exhaust ventilation, number of excess workplace and penalties for exceeding a permissible exposure limit. On the other hand, total benefit was calculated using the reduction rate of occupational disease, number of workplaces treating each substance and industrial accident compensation. Finally, the net benefit was calculated by subtracting total cost from total benefit. Results: All the substances investigated in this study were classified by CMR(Carcinogens, Mutagens or Reproductive toxicants) and their international occupational exposure limits were stricter than the domestic permissible exposure limits. As a result of excess rate analysis, trichloroethylene was the highest at 11%, whereas nickel was the lowest at 0.5%. The excess rates of all substances except for trichloroethylene were observed at less than 10%. Among the seven substances, the total cost was highest for trichloroethylene and lowest for carbon disulfide. The benefits for the seven substances were higher than costs estimated based on strengthening current permissible exposure limits. Thus, revising the permissible exposure limits of the seven substances was determined to be acceptable from a social perspective. Conclusions: The final revised permissible exposure limits suggested for the seven substances are as follows: $0.2mg/m^3$ for nickel, 0.5 ppm(TWA) and 2.5 ppm(STEL) for benzene, 1 ppm(TWA) for carbon disulfide, $0.01mg/m^3$(TWA) for cadmium, 10 ppm(TWA) and 25 ppm(STEL) for trichloroethylene, 0.3 ppm(TWA) for formaldehyde, and 0.005 ppm(TWA) and 0.02 ppm(STEL) for toluene diisocynate(isomers).

• 한국안전학회지
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• 제10권4호
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• pp.87-96
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• 1995

It is only three(3) years since we applied brackets for scaffolding in the construction area. Unfortunately, there is no structural criteria on how to install those in the site so far, despite the fact that those brackets have been applied into the site by the firms already. It is shown that resistant capacity of each bracket type has been investigated, analyzed from this experimental study. Accident-concerning data on construction site analyzed by the Ministry of Labor, show temporary structure involves 18.6% of the total industrial accident, which the accidents from scafold-supporting brackets have rate of 42.5% of the ones occurred from the temporary structures. There are two main aspects to be observed : one is how much resistant capacity the brackets have themselves, the other is how exactly to install those without eccentricity. But practically, nobody does check of this bolt-installing conditions in the site and no check of tightening level of nut because there is no available tool to check torque amount for this kind of nut. We just have to rely on scaffolders experience of this tightening. This experiment involves just this variable of tightness at site. Eventually this insufficient tightness causes to collapse those scaffolding structures. The bracket might have less the one than its original capacity due to this insufficient tightness. Three(3) times of PIVOT tests show that fractured condition of two(2) row brackets has occurred mostly at lower bolt due to shear force. Therefore, tightness of bracket-installing bolt, tensile strength of the bolt, shear strength of the bolt, loading condition with equal two point or inequal two point loads, are mainly investigated as variables in this study.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2007년도 정기학술발표대회 논문집
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• pp.710-713
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• 2007

2002${\sim}$2006년까지 총 5년 동안 한국산업안전공단에 접수된 중대재해건수 총 2546건 중 추락사고로 인한 중대재해건수는 1444건으로 전체 재해발생률의 56.7%로 가장 높은 비중을 차지하고 있다. 본 연구는 2002${\sim}$2006년 한국산업안전공단의 중대재해 조사목록을 대상으로 추락중대재해의 발생형태별 재해율, 규모별, 공사종류별, 기인물별, 동업종경력별, 발생시점별 현황분석과 추락중대재해에 대한 직종-공사종류별, 직종-기인물별 현황을 교차분석 하였다. 이에 따라 본 연구는 건설 중대재해 발생형태 중 추락중대재해를 중심으로 발생인자별 현황을 분석하고, 인자별 교차분석하여 건설공사의 추락중대재해 발생특성을 도출함으로써 건설공사 시공현장에서 추락중대재해의 안전계획 수립 시 기초적 자료를 제공하고자 한다.

• 문화기술의 융합
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• 제8권5호
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• pp.631-639
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• 2022

최근 정부는 산업재해, 사망만인율 절반감축을 목표로 산업안전보건법 전부개정, 중대재해처벌법 등의 시행을 통해 산업안전의 패러다임을 전환하려는 노력을 하고 있다. 특히 50인미만 또는 1억원 미만의 소규모 사업장은 안전보건관리 역량부족, 사업주의 의지부족 등으로 안전보건관리체계 구축에 어려움이 있으며 결과적으로 산업재해의 많은 부분을 차지하고 있다. 이에 본 연구에서는 정부의 정책 중의 하나인 소규모 사업장 안전보건기술지원사업의 전반적인 사업부분에 대하여 전문가 설문조사를 통해 문제점을 파악하고 개선대책을 제시하고자 하였다.

• 한국산업보건학회지
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• 제34권1호
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• pp.26-34
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• 2024

Objectives: The successful implementation of the Port Safety Special Act is a very important matter. Now that one year has passed since its introduction, this study aims to review the achievements so far and identify future tasks. Methods: The provisions of the Special Act on Port Safety were analyzed and the latest literature related to port safety management was reviewed. In addition, an in-depth interview was conducted with a business owner. Results: The achievements over the past year are as follows. As business operators took greater responsibility for safety management, blind spots in safety were resolved to an extent. Specialized training for the port unloading industry was provided, and a safety management system was established for unloading docks. In addition, the Ministry of Oceans and Fisheries was able to intervene in the prevention of safety accidents at ports through the deployment of port safety inspectors. In 2022, the port industry accident frequency and death rate declined compared to the previous year. Conclusions: The "Port Safety Special Act" has become relatively well established in the port industry over the past year. However, since the Serious Disaster Punishment Act was implemented in January of the same year, there is a limit on determining what is necessarily the effect of the Special Act. Future tasks include unifying contracts centered on cargo handling companies, supporting safety management costs, increasing the number of port safety inspectors, producing reliable port disaster statistics, and cooperating between the Ministry of Oceans and Fisheries and the Ministry of Employment and Labor.

• 문화기술의 융합
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• 제10권1호
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• pp.533-538
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• 2024

2013년 이후로 산업안전보건법상 건설업 위험성 평가가 시행되었으나 법적 강제성이 없어 건설회사들은 이를 형식적으로 운용해 왔다. 또한 최근 산업안전보건법 전면개정, 중대재해 처벌등에 관한 법률 등으로 안전보건 의무를 강화하였으나 사고성 사망만인율은 정체되고 있는 것이 현실이다. 산업재해를 예방하기 위한 위험성 평가 계획이 적절하게 수립된다고 하더라도 해당 사업장에 종사하는 근로자가 위험성 평가의 내용을 이해하고 실행할 수 있어야 하며 이를 위해서는 해당 근로자를 참여하도록 하는 것이 중요하다. 본 연구에서는 이를 위해 건설업 위험성 평가 시 취약계층 근로자의 참여를 활성화할 수 있도록 현장 실태조사를 통해 문제점을 파악하고 효율적인 근로자 참여방안을 모색하고자 하였다.

• 한국산업정보학회논문지
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• 제24권1호
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• pp.45-63
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• 2019

본 국내 건설업 사업자수는 매년 증가하고 있으며 산업의 고도화, 건설공사의 고층화 대형화로 건설업 근로자의 재해 노출 위험이 커지고 있다. 특히 문화와 언어가 다른 외국인 근로자 수의 증가, 다수의 중장년층 근로자, 옥외생산, 고소작업, 중장비 작업 등의 건설업 특성으로 타 산업에 비해 재해자가 많고 중대재해 위험 또한 높은 실정이다. 건설업의 경우 정해진 기간 안에 이루어져야하는 노동집약적 산업이고, 야간작업 등의 특수한 작업환경이 많으며 적정 공사비 확보가 안될 경우 안전관리에 대한 투자 또한 소홀하여 건설재해 요인에 대한 관리가 취약할 수밖에 없다. 건설업이 타 산업에 비해 재해율 및 사망률이 높고, 위험/특수한 작업환경, 다양한 국적 및 중장년층 근로자가 많다는 특성을 보았을 때, 위험요인 탐색을 통한 선제적인 건설 업종 현장 안전관리는 필수적이다. 본 연구에서는 건설 업종별 체계적인 위험관리를 위한 통찰력(Insight) 확보를 위해 지난 10여 년간 발생한 약 8500여 건의 건설재해사례를 분석하고 업종별 위험요인을 도출하였다. 분석결과 사고 다발 업종과 분석변수인 발생형태, 작업내용, 기인물, 가해물 간의 상호연관성을 살펴본 결과 각 분석변수와 사고 다발 업종은 서로 상호연관성이 있는 것으로 나타났으며, 특히 작업내용의 경우 각 업종과의 상호연관성 크기가 가장 큰 것으로 나타났다. 특히 사고 다발 업종 중 철근코크리트공사업과 토공사업은 재해발생빈도가 높을 뿐만 아니라 발생형태, 작업내용, 기인물, 가해물 내 대부분의 위험요인 카테고리에서 위험성이 높은 업종으로 나타났다.

• 한국산학기술학회논문지
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• 제20권9호
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• pp.204-210
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• 2019

터널 내부에서의 화재의 경우 일반도로와 달리 운전자의 시야 확보가 어려워 대형사고가 발생할 가능성이 매우 높다. 따라서 터널 내부 화재 발생 시 제트팬 용량에 따른 제연 효과에 관한 연구가 필요하다. 본 연구에서는 NIST에서 개발한 화재시뮬레이션인 FDS를 사용하여 제트팬의 유무, 제트팬의 용량에 의해 터널 내부에서 발생한 차량 화재에 대한 제트팬 용량에 따른 연기 거동 및 가시거리, 일산화탄소의 농도를 분석하였다. HRRPUA(Heat Release Rate Per Area)는 $3.6MW/m^2$로 설정하였으며, 모든 해석 시간은 총 600s로 설정하였다. CFD에 의한 가시거리, 일산화탄소 농도 해석은 y=30m, y=110m에서 결과를 확인하였으며 직경과 유량에 따라 연기거동 분석, 가시거리 분석, 일산화탄소 농도를 확인하였다. 제트팬의 직경과 유량이 커질수록 y=30m 후방에서 높은 가시거리를 확인할 수 있으며 일산화탄소 농도가 0ppm임을 확인하였다. 제트팬 직경과 유량이 큰 조건에서는 제트팬 유동의 상류 방향으로 대피하면 인명피해를 최대한 줄일 수 있을 것으로 판단된다.