The Forensic Safety Division is responsible for examinations and research related to accident interpretation based on physical and engineering knowledge and strives to realize substantive evidence by combing through the accident site and utilizing the laboratory to search for the traces and the truth hidden behind destruction, combustion and deformation.
Analysis and research on the ignition point and cause of fire through fire & arson site investigation and examination on the collections from the site
Site investigation of safety accidents such as falling, collapse, explosion, electric shock, etc. and analysis and research on the collections from the site
Analysis and research on traces such as tool marks, weapon marks, fingerprints, footprints, etc., morphological analysis and research on bloodstains
Analysis and research for the cause of accident through examinations on firearms, explosives, and chemical explosions
The Forensic Safety Division consists of a Fire & Arson Research Lab, Safety Research Lab, Trace Research Lab, and Firearm Research Lab. The division is doing its utmost to keep Korea safe.
The Fire & Arson Research Lab performs research on ignition mechanism and combustion type analysis by identifying the point and cause of ignition through analysis on a fire site and examination on collections from the fire site and provides assistance to investigations by examining whether it is a case of arson. The analysis equipment used includes optical microscope, X-ray, FE-SEM, and infrared camera. For more efficient and accurate analysis, the laboratory makes every effort to develop analysis techniques by conducting various research projects and introducing analysis equipment using the latest techniques.
The Safety Research Lab conducts analysis and research for the identification of causes of safety accidents such as structural collapses (e.g., facilities, plants, etc.) and crashes, and investigation on the cause of the disaster. Analysis equipment includes FE-SEM, Spark-Emission Spectrometer, Metallographic Microscope, Advanced Indentation Tester, Universal Tensile Tester, Micro Vickers Hardness Tester, Scanner, etc. In order to cope with advanced accidents, the laboratory makes continuous efforts on development of analysis techniques and preparation of high-tech equipment. The laboratory performs FEM and CFD interpretation for analysis of safety accidents, and Midas Gen & Civil, LS-Dyna program, etc. are used for interpretation of structural collapses.
The Trace Research Lab performs trace analysis and bloodstain pattern analysis. Trace analysis is a field that analyzes morphological trace evidence such as an injury type by a tool, footprint and fingerprint type, and bloodstain pattern, which are found at crime scenes. By analyzing the traces of the crime scene, tools used for the crime, size of footprints, and fingerprint makers are presumed, and coidentity is determined by obtaining the suspected tool, shoes or fingerprints of a suspect, etc.
Bloodstain analysis is a field in which crime scenes are reconstructed by analyzing the pattern, size, and distribution of bloodstains generated at the crime scene, determining the cause of its generation, and presuming the behavior. Crime scene reconstruction theory is applied to reconfigure the scene with the bloodstain pattern, and computer simulation, 3D drawing and behavior expression technique are used. If the bloodstain pattern is analyzed, it is possible to reconstruct the behaviors between a perpetrator and victim, to judge the authenticity of the statements of people involved in a crime, and to presume a perpetrator if the pattern of bloodstain is sufficiently obtained.
The Firearm Research Lab performs analysis on firearms and explosives. The firearm and explosive analysis is divided into identification of features of a gun used for a crime by analysis on the gun shooting trail, determination of the shooting location by analysis on ballistic trajectory, interpretation of the case by site inspection and site reconstruction, determination of the type of explosive, and analysis on the components of explosive. To this end, the laboratory uses analysis equipment such as cutting-edge Forensic Comparison Microscope, Oehler 57 speedometer, FE-SEM and HPLC.
The gas explosion accident that occurred at the construction site of the 1-2 section of subway line 1 in Sangin-dong, Daegu, resulted in 220 casualties (102 deaths including 42 students who were on their way to school and 117 injuries) and 60 billion KRW in damage. It was adjudged that a gas leak during excavation work flowed into the subway construction site along the sewer and ignited and exploded by an unknown fire source.
At the Jungangno station of Daegu Subway Line No. 1, Kim whose mind and body was not sound poured oil and set fire to the train, thereby resulting in 192 deaths and 148 minor and major injuries. The site inspection and experiments demonstrated that the anti-flaming function was completely lost or did not exist from the beginning demonstrating the fact that continuous burning after ignition of the chairs that come into to contact with passengers and the painted part of the inner wall of the train.
A fire broke out in the construction site of a frozen warehouse of Korea 2000 in Hobeob-myeon, Icheon-si, Gyeonggi-do, killing 40 people. In this case, the latest analysis technique, FDS, was introduced to visualize the analysis details and promote the understanding of investigative agencies and judicial authorities related to the accident.
A fire broke out 2 km in front of Haengdamdo service area in the Mokpo direction of Seohaedaegyo Bridge in Pyeongtaek-si, Gyeonggi-do, as a wire connected to the pylon was broken. Immediately after the accident, arc spot, a special pattern of electric fire, was found on the cut surface of the cable, confirming that the cause of the fire was thunder stroke.
Gyeongju Mauna Ocean Resort Gymnasium Building collapsed, resulting in 10 deaths and 103 injuries. The design and construction suitability according to the snow load was identified.
A gas explosion occurred at the 4th section of a subway construction site in Jugok 2-gyo, Namyangju. 4r workers died and 10 persons were injured. Two site inspection and investigations on the collected evidence revealed that the LP gas used for the rebar cutting operation was related to the gas explosion.
As the forensic safety division proved the existence of many bullet trails in the outer walls, ceilings, and pillars of the Jeonil building, where the freedom fighters opposed the martial law force at the time of Gwangju 5•18 in 1980, it contributed to the building’s being designated as a historic site related to the Gwangju 5•18 democratization movement.
Due to the collapse of the vent cover in the U space park located in Seongnam-si, Bundang-gu, 16 persons died and 11 persons were injured, among people who was watching a performance. The forensic safety division identified whether or not the construction was suitable according to the concentrated load.
강원도 원주시 한의원에서 불임치료목적으로 지은 한약, 한약가루약(일명 반묘가루) 및 한약추출액을 혼합하여 마신 직후 환자가 사망하였으며, 감정결과 위 내용물 및 혈액에서 칸타리 딘(cantharidin)이 검출됨. 칸타리딘은 반묘의 주성분으로 치사량이 10mg이고 과량복용시 복통, 이질, 토혈, 혈뇨, 혈압 저하 등에 이어 사망한다고 알려져 있음