How do you understand the hazard identification process?

Excerpt from Haosou Encyclopedia: ① Determine the distribution of hazardous factors. Comprehensive analysis of these hazardous factors is carried out to obtain comprehensive information on the types of hazardous factors present in the system and their distribution. ②To determine the hazards and risk factors, in order to conduct analysis in a systematic and convenient manner and avoid omissions, it is advisable to analyze the existing hazards and risk factors separately according to aspects such as the site location, floor plan, buildings and structures, materials, production processes and equipment, auxiliary production facilities (including utility systems), and hazards in the working environment, and record them in a list. ③Determine the method of harm (hazard). The method of harm (hazard) refers to the way in which harm is caused to the human body and damage is inflicted on human health. For example, mechanical injuries such as compression, biting, collision, and shearing; in cases of poisoning, the affected organs, abnormal physiological functions, and types of damage to physiological structures (such as mucosal erosion, autonomic nervous system disorders, suffocation, etc.); as well as the retention of dust in the alveoli, pulmonary tissue fibrosis, and canceration of lung tissue. ④Determine the pathways and scope of harm. Most hazardous factors cause damage through direct contact with the human body; explosions cause harm within a certain area through shock waves, flames, and flying objects; toxins affect the human body through direct contact (such as the respiratory tract, esophagus, skin, and mucous membranes) or via the air in that area; noise damages hearing through the air over a certain distance. ⑤Identify the main hazards and risk factors; conduct a thorough analysis of the direct and underlying causes that lead to accidents, thereby providing a basis for determining the evaluation objectives, key focus areas, dividing evaluation units, selecting evaluation methods, and planning control measures. ⑥When identifying major hazards and risk factors, care must be taken to avoid omissions; in particular, special attention should be paid to those hazards and risk factors that could lead to serious accidents, and they must not be ignored. It is not only necessary to analyze the risks and hazard factors associated with normal production operations and handling, but it is even more important to analyze those risks and hazard factors that could result from equipment or device failures as well as operational mistakes.

Search for hazardous substances, hazardous activities, hazardous environments, hazardous buildings and structures, hazardous individuals, etc.

Hazard identification is a method that employs systematic analysis to identify various hazard factors present in production processes, equipment and facilities, as well as the working environment. It utilizes the principles of systems engineering to control and address these hazard factors, while continuously improving the methods used for such control. Contents of hazard identification: 1. Identification of the physical and chemical properties of substances. The physical and chemical properties related to safety include toxicity, vapor pressure, flash point, auto-ignition temperature, flammability range, odor, corrosivity, solubility, etc. Toxicity is divided into acute and chronic effects, which is important for emergency plans related to fires, explosions, and acute poisoning. Planners must also consider physical properties such as movement rate, volatility, fluidity, and vapor density. Other hazards such as corrosivity also need to be taken into account during prevention, as they can affect the safety and health of equipment and personnel. These properties can generally be found on the Material Safety Data Sheet (MSDS). 2. Identifying risks of reactivity and incompatibility: The reactivity (self-reactivity) of chemicals and their incompatibility with other substances may be overlooked, leading to hazards. Self-reactive substances include some monomers used in polymerization, thermally unstable substances (such as peroxides), and shock-sensitive substances. Common incompatible substances such as water, oxygen, and iron can cause significant harm to the factory. Incompatible substances may undergo acid-base reactions when processed simultaneously or stored too close to each other, releasing heat, toxic gases, or smoke ； Oxidation/burning reactions can cause fires and explosions ； Other reactions produce energy and gaseous products.