• 한국가스학회지
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• 제23권3호
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• pp.46-50
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• 2019

본 연구에서는 250kg 정도의 저장용량을 갖는 LPG 미니탱크에 대한 강도안전성을 FEM으로 해석하였다. FEM 해석결과에 의하면, 250kg의 저장용량을 갖는 LPG 미니탱크의 코너 반경은 175~205mm로 설계하는 것이 바람직한 것으로 나타났다. 일반적으로 가스저장탱크의 상하단부를 형성하는 경판의 코너 반경을 크게 설계할수록 강도 안전성은 높아지지만, 탱크의 내용적이 줄어들기 때문에 최적의 설계 데이터를 도출하는 것이 중요하다. 또한, 가스탱크의 강도를 안전하게 설계하기 위해 탱크의 두께를 두껍게 설계하려고 하지만, 두꺼운 강판을 사용하면 소재비와 운반비가 상승하므로 강판의 최적두께를 4.5~5.5mm에서 선정하는 것이 바람직하다. LPG 가스탱크의 액위를 측정하기 위해 사용하는 레벨게이지를 탱크의 측벽면에 구멍을 뚫어서 조립하는 기존의 방식보다 가스탱크의 중심축에 컬럼을 설치하는 레벨게이지 타입을 일체형으로 설계하는 것이 2배의 강도안전성을 높여주는 효과가 있다.

• 한국안전학회지
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• 제25권6호
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• pp.98-102
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• 2010

LPG (Liquefied Petroleum Gas) vehicles in metropolitan area are being applied to improve air quality and have been proven effective for the reduction of air pollutant. In addition, the demand of gas as an eco-friendly energy source has being increased. With the LPG filling station is also increasing every year. These gas stations are required to install the securest storage tank because of possibility of causing huge loss of life and property. Therefore, in this paper, underground containment type is proposed as installation of the LPG storage tank using Taguchi method, which is considered to be more safe, economical, efficient, easy checking and simple construction method than any other. If leakage, economics, real estate utilization rate, safety, easy to check, simple construct about above ground, buried underground and underground containment storage tank are analyzed by Taguchi method, real estate utilization rate, economic and safety in turn are improved. Therefore, the underground containment storage tank is a optimal installation technology.

• 한국가스학회지
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• 제10권1호
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• pp.7-12
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• 2006

소형저장탱크를 이용한 벌크공급시스템은 LP가스의 공급이 중단되거나 공급량이 부족하지 않도록 LP가스 사용가구의 최대가스소비량을 초과하는 가스량을 발생시켜 공급할 수 있어야 한다. 이때 벌크공급시스템에서 공급할 수 있는 가스량은 소형저장탱크의 가스발생능력이 되며, 소형저장탱크의 선정기준이 된다. 현재 우리나라는 소형저장탱크의 충전량, 연속사용시간 등에 따른 가스발생능력 산정기준이 없어 LP가스 사용가구수에 대하여 적합한 소형저장탱크의 선정이 어려운 상태로서 소형저장탱크의 원활한 보급에 문제가 되고 있다. 본 연구는 소형저장탱크의 선정기준이 되는 가스발생능력을 충전량, 외기온도, 연속사용시간 및 충전조성 등에 따라 산정하여 제시하고자 한다.

• 한국산학기술학회:학술대회논문집
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• 한국산학기술학회 2010년도 춘계학술발표논문집 2부
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• pp.949-952
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• 2010

The utilization of LPG(Liquefied Petroleum Gas) is increasing as an environmental-friendly fuel in all countries making green growth new paradigm, and use of gas is spread fast as motor fuels to decrease air pollution. Loss of lives by explosion and fire is happening every year as gas use increases, and gas accident in large scale storage property is causing serious problems socially. To minimize this problem, underground containment type storage tank is being presented as an alternative recently. In this study, to minimize explosion occurrence in underground containment type storage tank, the suitable storage tank is designed to consider explosion prevention that makes exposure surface area minimize in confined contents volume and flame to construct storage tank by the most suitable condition in the underground containment room. As a result of the design of storage tank having the most suitable condition by this research, underground containment space was minimized on diameter 3m, length 4.83m in 20 tons storage tank and its safety was improved as exposure surface area in flame decreased by 89.4%, compared with the existent storage tank.

• 한국안전학회지
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• 제30권4호
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• pp.64-72
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• 2015

The purpose of this study is to study the safety of a small LPG storage tank with a capacity less than 3 ton when it is exposed to an external fire. First, simulation studies were carried out using ASPEN Plus and PHAST to demonstrate that overpressurization in the tank can be relieved by discharging the LPG through an adequately sized safety valve, but the release may lead to the secondary risk of fire and explosion around the tank. Next, the temporal variations of the temperatures of the lading and tank wall were obtained using AFFTAC, which showed that the tank wall adjacent to the vapor space could be overheated in about 11 min to such a point that the weakened strength might cause a rupture of the tank and subsequent BLEVE. The consequences of the BLEVE were estimated using PHAST. Finally, several practical measures for preventing the hazards of overheating were suggested, including an anti-explosion device, sprinkling system, insulation, heat-proof coating, and enhanced safety factor for tank fabrication. The effectiveness of these measures were examined by simulations using AFFTAC and ASPEN Plus.

• 한국안전학회지
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• 제12권4호
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• pp.86-92
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• 1997

Demand of LPG and LNG will increase continuously due to high calories, clearness, and convenience for usage. These gases are used widely for power plants, industrial plants, and domestic fuel. But accidents related with gas are increasing in proportion to increment of gas usage. Especially LPG has high ignitability due to weak dispersion to air and accumulation at low place because LPG is heavier than air. There are many hazards during transportation as well as production, storage, and usage of LPG. Commonly, tank lorry is used for inland transportation of LPG. If tank lorry were to raise leakage incidents and then LPG released during transporting, the accidents cause serious effects on the environment as well as human damage of surrounding area. In this study, therefore, hazards which cause LPG of tank lorry to leak during transportation were identified and risk of LPG transportation was assessed quantitatively. Also, the result of this study might be a useful measure for predicting damage and preparing safe transportation strategies of LPG tank lorry.

• 한국가스학회:학술대회논문집
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• 한국가스학회 2003년도 추계학술발표회 논문집
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• pp.203-208
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• 2003

• 한국안전학회지
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• 제35권4호
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• pp.74-83
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• 2020

In Korea, about 110,000 LPG small storage tanks of less than three tons have been installed in restaurants, houses and factories, and are used as LPG supply facilities for cooking, heating and industrial use. In the case of combustible liquefied gas storage tanks, the tank may rupture due to the temperature increase of the tank steel plate (approximately 600℃) even when the safety valve is operating normally, causing large-scale damage in an instant. Therefore, in the event of a fire near the LPG small storage tank, it is necessary to accurately predict the timing of the BLEVE(Boiling Liquid Expanding Vapour Explosion) outbreak in order to secure golden time for lifesaving and safely carry out fire extinguishing activities. In this study, we have first investigated the results of a prior study on the prediction of the occurrence of BLEVE in the horizontal tanks. And we have developed thermodynamic models and simulation program on the prediction of BLEVE that can be applied to vertical tanks used in Korea, have studied the effects of the safety valve's ability to vent, heat flux strength of external fires, size of tanks, and gas remaining in tanks on the time of BLEVE occurrence and have suggested future utilization measures.

• 한국가스학회지
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• 제17권3호
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• pp.1-7
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• 2013

LPG 충전소에서 발생하는 폭발의 피해를 Hopkinson의 삼승근법을 이용하여 계산하고, 건물과 인체에 미치는 영향을 프로빗 모델에 적용하여 피해예측을 평가하였다. 현재 국내에서 가장 많이 운용하는 20ton 저장탱크를 대상으로 누출량 10%를 프로빗 모델에 적용하여 계산하면 LPG 충전소에서의 안전거리는 각각 건물(손상)은 260m 이며, 인체(폐출혈 사망)는 30m이다.

• 문화기술의 융합
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• 제9권6호
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• pp.319-327
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• 2023

이 연구의 목적은 고속도로 휴게소에 설치된 소형 LPG 저장탱크의 폭발에 따른 영향범위를 분석하는데 있다. 이를 위해 휴게소에 설치된 2,900 kg 소형 LPG 저장탱크의 증기운 폭발(VCE)과 비등액체팽창증기 폭발(BLEVE)로 인한 과압과 복사열의 영향범위를 ALOHA(Areal Location of Hazardous Atmospheres)프로그램을 적용하여 정량적으로 평가하였다. 도출된 폭발 과압과 복사열의 영향범위는 각각 최대 반경 336 m와 423 m로 나타났다. 269 m 이내의 사람들은 3.5 psi이상의 과압으로 중상을 입을 수 있고, 192 m 이내의 사람들은 10 kw/m²이상의 복사열로 사망할 수 있는 것으로 예측되었다. 나아가 고속도로 휴게소 부대시설과 피해 영향범위를 고려한 LPG 저장 탱크의 안전관리 방안에 대해 논의하였다. 이러한 연구 결과는 고속도로 휴게소에 설치된 소형 LPG 저장탱크의 안전관리뿐만 아니라 휴게소 환경 및 시설을 고려한 안전사고 예방 규정 개선에 도움을 줄 수 있을 것이다.