【 Weak current College 】 preventing dangerous technology

Security science is about "security" of system knowledge, security technology is the realization of the "security" means. The former is the creation of security knowledge of research, the answer is "what" and "why"; the latter is the combined use of security knowledge to meet the needs of research, the answer is "what" and "do". The development of modern security: security technology develop without safety scientific breakthroughs and guidance, the deepening of security science development then you need to get a variety of security technologies support and guarantee. Safety science and security technology mutual dependence, promoting, and leading security technology scientific and safety science and technology development trends. Security Engineering as a guide to security technical implementation of the theoretical foundation, in safety science and technology disciplines system occupies a very important position.

Security Engineering is to prevent dangerous tools and methodologies. "Dangerous" often refers to cause bodily harm and a life threatening condition, thus preventing dangerous technology is human life safety and security technologies.

In the production and life, the dangerous State General: shock, fall, scald, mechanical damage, body combat, etc. Production and living in dangerous root complex and diverse, such as the use of electrical facilities, tools, mechanical devices, heights, hot work, ride, ride the elevator, pungent pleasure.

2. a fire protection engineering

Fire safety engineering for science and technology disciplines and subjects of one of the three-level disciplines belong to safety engineering (secondary disciplines) branch, and also is an interdisciplinary and comprehensive cross-discipline. The basic theory of this subject relates to systems theory, information theory, Cybernetics, decision Science, operations research and management science, professional theory relates to social engineering, disaster, thermal physics, combustion and explosion theory, fire hazard identification and evaluation theory, fire control systems engineering, fire protection equipment engineering, mass transfer theory, theory of energy transduction and pre-warning theory, monitoring its expertise involved in chemical engineering, mechanical engineering, architectural materials, water resources engineering, electronics technology, meteorology, sensor technology, laser technology, thermal imaging, remote sensing technology, computer simulation technology and fire simulation technology application and discipline of detection techniques.

Fire engineering disciplines of range wide, wider content. For example, the combustion of flammable materials and media research, fire mechanism, combustion mechanism, the delivery way, oil Yang boiling mechanism, various types of fire control, fire alarm equipment, fire-fighting equipment, fire fighting vehicles, special apparatus and extinguishing, fire control equipment, fire-retardant materials, fire protection and self-help escape equipment, fire monitoring system for the processing and production of flammable or explosive products equipment fire design, various types of building fire characteristics of research and design, means of transport (such as aircraft, ships, trains, cars, etc.) fire characteristics and prevent technical, static security and fire research, gas control and fire research, flammable explosive substances storage and transfer of technology and equipment, etc. Use the system's point of view, the subject of content broadly grouped into three parts: basic theory and application of fire protection engineering study of the theory; fire protection engineering technology and equipment; fire protection materials and fire-retardant materials.

Fire engineering disciplines of study, in the production areas and non-production areas have been developing rapidly. Is an important part of industry and security, is also an important organization of urban disaster prevention; both the lives and safety of workers, but also related to the safety of our residents. The research output of direct services to economic construction and social life, in the creation of economic and social benefits, reduce economic losses, protect life safety and improve environmental quality, economy, sustainable development, and other aspects are playing a significant role.

In the 21st century fire engineering technology research direction: micro-gravity or weightlessness on the mechanism of the fire, the smoke movement in a computer simulation, building internal fire computer simulation, thermal ignition mechanism and fire spreading mechanism, the dual nature of the fire, confined spaces smoke plume structure and propagation, heat flow field of diagnostic analysis theory, forest surface fire spread theoretical model, turbulent combustion of laminar flamelet model, building fire smoke flow simulation technology.

3. explosion safety engineering

Explosion safety engineering is the safety of third-level science and technology disciplines, is secondary disciplines security engineering sub-disciplines. Explosion safety engineering is devoted to the study of explosion hazards and accidents mechanism and development process, and the explosion hazard prevention and control of knowledge, for the presence of dangerous substances in the workplace, explosion and burning are often accompanied by raw, combustion will cause the explosion of dangerous substances and explosive and may cause greater combustion, thus always in the same breath of fire and explosion.

By type of accident can be physical explosion, chemical explosion, three types of chemical explosion.

Prevention of explosion explosion safety works mainly of theoretical and practical technology include the following:

(1) physical mechanism and of the explosion prevention technology: to ensure the safe operation of engineering technology, apply the following theory and techniques, for example, pressure vessel NDT technologies, metal mechanics and fracture mechanics, boiler and pressure vessel safety management theory and technology, the prevention of boiler and pressure vessel explosion of forecasting, control technology and management practices.

(2) combustion explosion, development of the mechanism and flame burst technology: for example, thermal oxidation, hot fire, impact, friction, electrostatic, and electromagnetic effects, abnormal chemical reaction, explosives and other substances of compatibility, materials of flame-retarding technology and theory and application technology. Targeted preventive or control measures to avoid or eliminate non-normal combustion and explosion.

(3) the failure of explosion hazards and protection technique: for example, blast, blast fragmentation, seismic effect, explosion-proof earth berm, flameproof retaining wall, antiknock structure, structure, and other explosive-proof, explosion, explosion, leakage switchExplosion and blast theory and control explosive expansion of technology, to take various measures to control the effects of the explosion hazard areas to minimize as much as possible.

(4) the combustion and explosion hazard identification and assessment techniques: for example, the use of security systems engineering approach, on the presence of hazardous substances the combustion and explosion site system safety analysis to assess the risk size, potential solutions proposed rectification, and correct identification of the dangerous State, to take appropriate security measures to provide the scientific basis.

(5) the explosion fire warning and forecast and control technology: for example, fire-proof alarm system, automatic rain fire extinguishing system, interlocking device, automatic safety device, evacuation and rescue facilities, theory and practical skills, accident to temporarily take control time worse contingency plans to minimize the loss.

(6) the explosion in computer simulation system: for example, the design of the explosion accident scene simulation package, to substitute the use of large amounts of explosive test data obtained explosive energy distribution and test the reliability of protective facilities.

(7) the high energy materials such as explosives safety performance: for example, the gunpowder of stability, sensitivity, explosives, explosive detonation transition theory and control technology, so that the correct use of explosives, or the use of appropriate technology and explosive production safety management measures to ensure that producers and users.

(8) blasting safety technology: in the national economic construction, extensive use of blasting methods, for example, road, mining, irrigation, mining by mountain, the stone and so on for plant control or management of defects, sometimes bursting accidents, casualties, in-depth study of explosion dynamics, material dynamic mechanical and blasting safety technology, as well as blasting site safety management, and more, for security engineering blasting of security and reliability are very important.

4. safe electrical engineering

Safe electrical engineering is the discipline of safety engineering branch, is security science and technology (subjects) of three-level subjects. The subject is the study of engineering safety power and protect the electrical safety of science. Safe electrical engineering is to secure for PCT to electrical safety, based on modern technology as a means of protection systems, the environment, human security, control and maintain the safe use of electricity, secure electrical engineering technology. Safe use of electricity and security apparatus is not equal to safe electrical engineering, security electrical engineering components. Safe electrical engineering's main task is to study the voltage, current, electrostatic, and electromagnetic nature of lightning and movement; to study various electrical accident, i.e. study electrical accident mechanism and reason, composition, characteristics, rules and measures; research adopt safe electrical solution or control various security engineering power problem, namely the research use electrical monitoring, electrical inspection and electrical control and methods to the evaluation system of safety performance, or obtain the necessary security conditions; to study various electrical accident damage mechanism of the human body, the law and to prevent, control, eradication and emergency engineering method.

Electrical accidents refer to electrical energy (flow) is not stipulated by the people in the direction of the transfer by accident or disaster. According to the morphology of the incident energy, electrical accidents are divided into electric shock accident accidents, lightning, static electromagnetic radiation accidents and incidents, circuitry.

Various electrical accidents were may cause personal injury, death, fire, explosion, equipment and facilities damage and financial loss. Electrical accidents in China is very serious. In non-mining enterprises, electric shock accident in various types of accidents at work in more than 10 per cent. The consumption of electricity, the power of our approximately every 2 × 108 kWh that killed one person and technologically advanced countries each electricity (30 ~ 40) 108 kWh was killed one person. Electrical fire in China is still on the rise, the electric fire has more than 20 per cent of the total number of fire. Lightning, static, and other electrical accidents are more serious. Improve the safety of electrical engineering theory and application of standards, is not only the needs of the development of national economic construction, it is to protect people's lives and reduce property damage.

Safe electrical engineering is a relatively young discipline, inclusive, comprehensive, practical and systemic. Its research areas include not only ensuring the safety of electricity technology, equipment, device and product engineering, also including the realization of safe electrical engineering of scientific management, especially for electricity, lightning, static electricity, electro-magnetic radiation protection and human safety and health of in-depth study, not only useful for engineering and technology development, more conducive to social order and stability and improve the quality of family life.