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목연수,장성록,이영섭,고성석 한국산업안전학회 2002 한국안전학회지 Vol.17 No.2
Current fire safety in the construction sites has developed piecemeal over a considerable period of time. However, the law and regulation of fire safety is insufficient to protect fire in the construction sites. The frequency of fire in the construction sites is very rare but it brings longterm deterioration durability of building structure and large scale industrial calamity. There are many process of works and each work deals with many kind of flammable material, so it is very difficult find a proper safety fire prevention. This study executed the questionnaire and fire experiment of the welding work to provide effective fire prevention counterplan.
목연수,장성록,옥영석,전승현,이성존,이창언 한국안전학회 2003 한국안전학회지 Vol.18 No.4
We developed a JHPMA Information System to establish the voluntary safety management for the Paint Industry. IIPMA System means that manager, supervisor and worker on the process-line find out the hazardous and/or unsafe potentials, make improvement of the field safety by the cooperation with top manager, safety staff and eventually put in the practice. HI'MA Information System consists of functions to suggest and evaluate the safety concerns hierarchically from top manager to workers on mtemet or Intranet. We establish the safety management and sharing of the safety information and are able to find the unsafe potentials by the HPMA Information System. Also We are able to mine new safety information and establish accident prevention model by the Safety DATABASE.
유통법을 사용한 툴루엔과 에틸벤젠 혼합용제의 인화점 측정에 관한 연구
목연수 釜山工業大學校 1995 論文集 Vol.37 No.-
The flash point is generally used as a hazardous index of fire or explosion of a flammable liquid. In this study, lower flash points and upper flash points according to the compositions of Toluene-Ethylbenzene mixtures are determined by Air-blowing method instead of Tag-closed flash point test. As results, the relations between the flash points and the compositions of these mixtures are as follows; T????=17.00α+6.32 T????=19.82α+38.64
Hydroxy Propyl Methyl Cellulose의 자연발화에 관한 연구
최재욱,목연수,하동명 한국화재소방학회 2001 한국화재소방학회논문지 Vol.15 No.4
HPM의 자연발화는 일정한 주위온도에서 자연발화의 연구와 Godbret-Greenwald가 고안한 전기로에서 운상상태의 최소발화온도를 구하였으며, 시료를 용기에 충전했을 경우 용기의 크기가 클수록 발화한계온도는 낮아졌으며, 겉보기활성화에너지는 Frank-Kamenetskii의 열발화이론으로부터 계산하였고, 운상상태의 발화온도는 21%의 산소농도하에서 최소발화온도를 구하였으며, 산소농도 변화의 실험결과 산소농도 10%에서 발화되지 않았으며 한계산소농도를 구할 수 있었다. The spontaneous ignition of hydroxypropyl methyl cellulose(HPMC) was investigated at constant ambient temperature in the oven and minimum ignition temperature of dust clouds with Godbret-Creenwald Furnace respectively, In the experiments of the vessel filled with sample, the larger the vessel was the lower the spontaneous ignition temperature and ambient temperature was calculated from the Frank-Kamenetskii thermal ignition theory, The minimum ignition temperature for the dust cloud state was found under 21% oxygen concentration. At the experiment with the change of oxygen concentration, HPMC was not ignite at 10% O2 and so the limiting oxygen concentration was obtained at 10%. Keywords : Spontaneous ignition, Ambient temperature, Minimum ignition temperature Frank-Kamenetskii thermal ignition theory
1-Hexene과 2-Hexene의 발화특성에 관한 연구
최재욱,목연수,김상렬 釜山工業大學校 1990 論文集 Vol.32 No.-
This study was performed by experiments with ASTM's apparatus for determination of autoignition temperature to obtain autoignition characteristics of 1-Hexene and 2-Hexene. As results, minimum autoignition temperatures(MAIT) of 1-Hexene and 2-Hexene were respectively 254℃ and 257℃, and dropping volume corresponding to these temperatures was 0.23ml. Instantaneous ignition temperatures by using this dropping volume were 400℃ for 1-Hexene and 427℃ for 2-Hexen. Relation between ignition delay and temperature agreed with Semenov's equation and apparent activation energy for 1-Hexene and 2-Hexene was the same value of 39 Kcal/mol. Hence it was found that differences in autoignition characteristics of these materials were not significant.
Hydroxy Propyl Methyl Cellulose 분진의 습도와 온도에 대한 영향성 연구
임우섭,목연수,최재욱 한국안전학회 2004 한국안전학회지 Vol.19 No.3
This study was performed with Hartmann type dust explosion apparatus and Godbert-Greenwald furnace apparatus in order to research the effect of temperature and humidity affecting LEL, minimum ignition temperature of Hydroxy Propyl Methyl Cellulose. The experimental determinations in the range between 20℃ and 60℃ of temperature was not affected LEL(180g/m³) but LEL showed 200g/m³ and 250g/m³ at 80℃ and 100℃. As the change of humidity LEL was 180g/m³ for 50%, 200g/m³ for 60% and 250g/m³ for 70% but dust explosion didn't occur over 80%, The ignition temperature of HPMC dust clouds was increased as increasing of humidity. So, the minimum ignition temperatures at 50%, 60%, 70%, 80% of humidity was 363℃, 375℃, 397℃, 405℃.
金相烈,金瀅翰,睦演洙 동아대학교 공과대학 부설 한국자원개발연구소 1988 硏究報告 Vol.12 No.1
The bubble behavior in a bubble column was observed, and its size and velocity were determined using two sets of probes measuring the resistance. From the measurement a local gas holdup was also obtained. Since the local gas holdup could be measured, the distribution of bubbles in the radial direction was able to find from the experiment. As a result, a correlation between gas holdup and the operating condition of the column, represented as Reynolds number, and the physical property, expressed as Galilei number, was made from the experimental data.
건조기에서 Amino수지 성형재료의 경화특성에 관한 연구
최재욱,최일곤,목연수,김상렬 釜慶大學校 1998 釜慶大學校 論文集 Vol.3 No.2
We studied the effect of mass transfer in a dryer on the condensation of amino resin mould material and the curing characteristics, and investigated the drying rate, the moisture and the curing fluidity according th the variations of the temperature and the drying media recycle volume which affects the mass transfer in the drying process. So, the result are summarized as follows: ① As the drying temperature increased to 70℃, 80℃ and 90℃ respectively, the drying rate became fast. ② In the same final drying time, the higher the drying temperature became, the more the moisture content of the urea resin mould material inceased. ③ Accordingly as the drying temperature increased, the moisture content of the drying material suddenly decreased in short drying time, but the moisture content increased when the drying time was between 80 minute and 120 minutes. ④ As the drying temperature increased, the curing fluidity of amino resin mould meterial decreased. ⑤ As the recycle volume of the drying media increased, the curing fluidity decreased.