연료가스 충전소의 방호계층 분석방법 적용 사례

박교식(Kyoshik Park),조영도(Young-Do Jo),Gurkan Karakas 한국가스학회 2012 한국가스학회 학술대회논문집 Vol.2012 No.5

Development of Standard Safety Management Regulation for Research Laboratory

Kyoshik Park(박교식) 한국위험물학회 2016 한국위험물학회지 Vol.4 No.1

Standard type of safety management system for experimental laboratories was developed to promote safer environments in an effective way. The system consists of three hierarchies; regulation, sub-regulation, and practice. The regulation and sub-regulation include mainly managerial topics while the practice contains lot of technical topics and terms to achieve a better safety performance. In specific, the practice contains three kinds of safety management activities such as safety review, and hazard evaluation, safety check, and safety inspection. The safety review and hazard evaluation are defined as daily activities conducted by experimenters and supervisors. The safety check should be conducted by safety manager to ensure safety of a laboratory including whole equipment within the laboratory. The safety inspection is defined as the activities performed by a group of experts.

연구실 사고분류 체계 개발

박교식 ( Kyoshik Park ) 한국안전학회(구 한국산업안전학회) 2016 한국안전학회지 Vol.31 No.5

The goal of this study is to analyze accidents occurred at experimental laboratory and to suggest hierarchical taxonomy applicable to prepare countermeasures reducing the experimental laboratory accidents. Recent 5 years accidents were analyzed and classified according to their primary cause, facility or human. Then in case of facility, the accidents were further classified whether they can be fixed by organization or by individual. In case of human factor, they were classified into physical, chemical, or biological to prepare precise measures. Depending on the adequacy of appropriate practice, several measures were suggested such as; whether to improve training of laboratory workers, or to improve training the system, or to improve or prepare practice substantially. A new taxonomy for laboratory accident was suggested complying other governmental agencies’ classification such as KOSHA and KGS. Additionally, two kinds of possibilities were suggested such as possibility of major accident and possibility of disaster which can be defined as laboratory accident causing large scale of harmful consequence to residential area or environment by fire, explosion and/or toxic release of hazardous chemicals and/or microbiology.

염산취급시설의 사고시 사업장외에 미치는 영향평가

박교식 ( Kyoshik Park ) 한국화학공학회 2016 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.54 No.6

위험물인 염산을 취급하는 사업장에서 발생할 수 있는 사고를 알아내고 사고시 인근에 미치는 영향을 평가하여 어느 정도 위험이 있는지 알아보며 이에 대한 대비책을 적용하고자 하였다. 취급 화학물질 정보와 공정정보로부터 사고시나리오를 선정하고 염산 누출시 사업장외로 영향을 미치는 사고 시나리오를 선정하여 환경부의 지침에 따라서 ALOHA를 활용하여서 평가하였다. 최악의 사고 시나리오를 비롯한 사고 시나리오를 평가하였으며 이들의 사고시 피해완화대책도 살펴보았다. 평가결과 염산생산시설은 현재의 안전조치가 충분하여서 추가의 개선대책이 필요하지 않은 것으로 판명되었다. Chloric acid is a toxic chemical and the risk of facility handling chloric acid was assessed from the list of accident scenario to provide countermeasure to keep the vicinity safe. Accident scenarios were listed by using MSDS and process safety information. The scenarios having effect to the off-site were selected and assessed further according to guideline provided by Korea government. Worst case and alternative scenarios including other interested scenarios were evaluated using ALOHA. Each evaluated scenario was assessed further considering countermeasures. The results showed that the facility handling chloric acid is safe enough and needed no further protections at the moment.

구미의 불화수소(HF)누출사고 결과분석 연구

박교식(Kyoshik Park),김태옥(Tae-Ok Kim),김지윤(Ji-Yoon Kim),유방현(Bang-Hyun Yoo),박도준(DoJun Park) 한국위험물학회 2013 한국위험물학회지 Vol.1 No.1

Hydrofluoric acid release accident occurred in Gumi industrial area in September of 2012 was analyzed by applying simple modeling Consists of 3 steps; liquid phase release, evaporation into atmosphere, and dispersion. The dispersed distance along crosswind direction was reconstructed through measuring concentration of hydrofluoric acid around the leaves of the scene and Gaussian dispersion modeling was applied to evaluate the amount released. The amount released was calculated by simple equation relating evaporation rate expressed in terms of temperature and material properties. The results will be good example to prepare countermeasures against similar toxic release.

독성물질 저장설비의 사고시 사업장외에 미치는 영향평가

박교식(Kyoshik Park) 한국가스학회 2017 한국가스학회지 Vol.21 No.3

위험물을 취급하는 사업장에서 인근에 미치는 영향을 평가할 때 독성물질의 누출은 가장 관심있는 분야중의 하나이다. 대표적인 시설로서 염산 생산시설을 선정하여 공정정보로부터 사고 시나리오를 선정하고 독성물질 누출시 사업장외로 영향을 미치는 사고 시나리오를 선정하여 환경부의 지침에 따라서 평가하였다. ALOHA를 활용하여서 최악의 사고 시나리오를 비롯한 사고 시나리오를 평가하였으며 이들의 사고시 피해완화대책도 살펴보았다. 평가결과 염산생산시설은 현재의 안전조치가 충분하여서 추가의 개선대책이 필요하지 않은 것으로 판명되었다. Toxic release is one of the most interested area in evaluating consequence to the vicinity of industry facilities handling hazardous materials. Chloric acid production facility is selected and toxic release is evaluated to assess the risk impacted to its off-site. Accident scenarios were listed using process safety information. The scenarios having effect to the off-site were selected and assessed further according to guideline provided by Korea government. Worst case and alternative scenarios including other interested scenarios were evaluated using ALOHA. Each evaluated scenario was assessed further considering countermeasures. The results showed that the facility handling chloric acid is safe enough and needed no further protections at the moment.

우리나라 독성물질 안전관리 체계

박교식(Kyoshik Park) 한국가스학회 2012 한국가스학회 학술대회논문집 Vol.2012 No.11

사고대비물질 상위 및 하위규정수량의 적정성 평가

김효동,김혜리,서청민,전진우,박교식,Kim, Hyodong,Kim, Haelee,Seo, Cheongmin,Jun, Jinwoo,Park, Kyoshik 한국안전학회 2022 한국안전학회지 Vol.37 No.2

Currently, in Korea, lower and upper tier qualifying quantities of the 97 substances requiring preparation for accidents have been designated. The information on the submission of chemical accident prevention management plan varies depending on whether the handling volume is above or below the lower or upper qualifying quantity. Because the criteria of the lower and upper qualifying quantities of substance requiring preparation for accidents are not stipulated in the Chemical Substances Control Act, this study attempted to establish a criterion through significance verification. In addition, the study investigated whether these qualifying quantities are related to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), toxic concentration endpoint, and National Fire Protection Association (NFPA). Finally, by comparing the risk categorization of the GHS, endpoint, and NFPA, it was evaluated whether the circulation-volume-based risk categorization of the substance requiring preparation for accidents that are in the top 13 is appropriate. The qualifying quantities of benzene, toluene, and sulfuric acid needed to be adjusted upward, while those of methyl alcohol and ammonia were adjusted downward from the current qualifying quantities. It is required to establish a quantified criterion that fully reflects the domestic situations in Korea and various indicators such as toxicity, physicochemical properties, and circulation volume for the qualified criterion of hazardous chemical substances. The study is expected to be helpful in establishing an efficient system by systematizing the criterion for qualifying quantity.

국내 독성가스 저장탱크의 SIL적용을 통한 사고예방에 대한 고찰

강훈(Hoon Kang),박교식(Kyoshik Park),김태옥(Tea-Ok Kim),박진형(Jinhyung Park),신동일(Dongil Shin) 한국가스학회 2015 한국가스학회 학술대회논문집 Vol.2015 No.11

탱크터미널 공사시 장외영향평가를 활용한 안전관리 방안

백은성(Eun Sung Baek),박교식(Kyoshik Park) 대한환경공학회 2020 대한환경공학회지 Vol.42 No.11

목적: 항만구역의 탱크터미널에서 위험한 화학물질의 저장, 보관시설에 대한 정량적 위험도 평가를 추정하기 위해서 환경부의 지침에 따라 위험도 평가 전 과정을 수행했다. 방법: 해당시설의 위험도를 최악의 시나리오, 대안의 시나리오, 및 사고 시나리오를 통하여 도출하였고 KORA 프로그램을 사용하여서 평가하였다. 해당 위험도에 대한 대책을 LOPA개념을 적용하여 제시했다. 결과 및 토의 : 사고시나리오 중 사업장외 영향을 미치는 사고에 대하여 최악, 대안의 시나리오 중심으로 검토한 결과 수동적, 능동적, 관리적 개선방안을 통하여 위험도를 법규가 만족할 수준으로 낮출 수 있었다. 결론: 항만건설 시 벤젠저장탱크 및 탱크로리에 대한 위험도 평가 결과, 저장탱크의 누출 시 탱크 내부의 저장량이 외부에 미치는 영향이 상당히 크다. 이러한 위험도에 대해 정리하고 Tank terminal 저장시설에 대해 종합적인 관리가 필요하다고 본다. Objectives : In order to conduct the quantitative risk assessment for hazardous chemical storage facilities at the tank terminal in the port area, the entire risk assessment process was performed in according to the guidances of the Korea Ministry of Environment. Methods : The risk of the facility was derived by the worst-case scenario, alternative scenario, and then evaluated by KORA program. The countermeasures of the risk were suggested by the concept of LOPA. Results and Discussion : Focusing on the worst case scenario and alternative scenario among the scenario having effet to offsite, risk can be reduced to satisfy regulation by applying measures of passive, active, and managerial. Conclusions : According to the result of risk assessment on benzene storage tank and tank lorry when port construction, the amount of storage inside the tank has a significant impact on the offsite. It is necessary to organize the risk of benzene, and comprehensive management of tank terminal storage facilities.