What are the contents of hazard identification?

The main ones are: 1. Regular activities (such as normal production activities) and irregular activities (such as inspections, maintenance, emergency response, etc.)； 2. Activities of all persons entering the workplace (including employees, visitors, contractors, etc.) ； 3. All facilities in the production area (including those owned by the mine and those provided from outside).

Hazard identification is the process of identifying hazards and determining their characteristics. Hazard identification primarily involves recognizing hazards, assessing their nature, and taking preventive measures in advance against the potential damages and impacts, in order to ensure the safety and stability of production. The content includes the determination of the analysis system, investigation of hazard sources, definition of hazardous areas, analysis of existing conditions, analysis of triggering factors, analysis of potential hazards, classification of hazard sources, and evaluation reports.

Hazard identification refers to the identification of major hazards; I’ve seen it in safety qualification exams – there’s a table listing **chemicals and their critical quantities**. I think, when it comes to identifying hazard sources, the most direct approach is to use specific quantitative measurements.

The cause or condition that may lead to injury or illness, property loss, damage to the working environment, or a combination of these situations. A hazard source refers to a part, area, location, space, position, equipment, or its location within a system that possesses potential energy and the risk of material release, which can cause injury to people, property damage, or environmental destruction; such a source can transform into an accident when triggered by certain factors. Its essence is a source or location with potential danger; it is the origin of accidents, the core where energy and hazardous substances are concentrated, and the place from where energy is released or an explosion occurs. Hazard sources exist within specific systems, and depending on the scope of the system, the locations of these hazard sources also vary. For example, on a national scale, a specific enterprise in hazardous industries such as petroleum and chemicals (such as an oil refinery) constitutes a hazard source. From the perspective of an enterprise system, it could be that a certain workshop or warehouse represents a hazard source; within a workshop system, it might be a particular piece of equipment that constitutes such a hazard source ； Therefore, hazard analysis should be conducted at different levels of the system. Generally speaking, a hazard source may or may not pose a risk of accidents. Hazard sources that do pose such risks must be addressed promptly; otherwise, accidents could occur at any time. In practice, the control and management of potential accident hazards are always associated with certain sources of danger, as there is no need to control hazards that do not pose any risk ； Controlling hazard sources essentially means eliminating the potential for accidents associated with them or preventing such potential hazards from arising. Therefore, in practice, these two concepts are sometimes used without distinction. According to the definition of a hazard source mentioned above, a hazard source should consist of three elements: potential danger, existing conditions, and triggering factors. The potential hazard of a hazard source refers to the degree of harm or the extent of loss that may occur once an accident takes place; in other words, it is the intensity of energy that the hazard source may release or the amount of hazardous material present. The existence conditions of a hazard source refer to its physical and chemical state as well as the conditions of the constraints it is subject to. For example, the pressure and temperature of the substance, its chemical stability, the strength of the pressure vessel in which it is contained, as well as any obstacles in the surrounding environment. Although triggering factors are not inherent attributes of hazard sources, they serve as external causes that transform hazard sources into accidents, and each type of hazard source has corresponding sensitive triggering factors. For example, with flammable and explosive substances, heat energy is the sensitive triggering factor; similarly, for pressure vessels, an increase in pressure is the sensitive triggering factor. Therefore, certain hazard sources are always associated with corresponding triggering factors. Under the influence of triggering factors, a hazard source turns into a hazardous state, which then leads to an accident. Hazard identification: The process of identifying the existence of hazards and determining their characteristics

Hazard identification is the process of identifying hazards and determining their characteristics. Hazard identification primarily involves recognizing hazards, assessing their nature, and taking preventive measures in advance against the potential damages and impacts, in order to ensure the safety and stability of production.

I have just completed the identification of hazard sources for 2015, and I’d like to share my thoughts. Six types of hazard sources: Physical hazard sources, Chemical hazard sources, Biological hazard sources, Psychological and physiological hazard sources, Behavioral hazard sources, Other hazard sources

1. Physical hazard sources: (1) Defects in equipment and facilities, such as poor stability, flammability and explosiveness, brake defects, controller defects, etc； ⑵Protection defects, such as: lack of protection, defects in protective devices, inadequate protection, improper protection distance, etc ； ⑶Electrical hazards, such as exposed live parts, electric leakage, lightning, static electricity, electrical sparks, etc ； ⑷Noise hazard sources, such as: mechanical noise, electromagnetic noise, hydrodynamic noise, other noises ； ⑸Vibration hazards, such as: mechanical vibration, electromagnetic vibration, hydrodynamic vibration, others ； ⑹Electromagnetic radiation, such as: ionizing radiation: X-rays, gamma rays, alpha particles, beta particles, protons, neutrons, high-energy electron beams, etc. Non-ionizing radiation, ultraviolet light, lasers, radiofrequency radiation, ultra-high voltage electric fields ； ⑺Hazardous sources from moving objects: solid projectiles, liquid splashes, rebounding objects, soil and rock slides, pile slides, air currents, impact-induced ground pressure, others ； ⑻Open flame ； ⑼High-temperature substances that cause burns: high-temperature gases, liquids, solids, etc ； ⑽Substances at low temperatures that cause frostbite: low-temperature gases, liquids, solids, etc ； ⑾Dust and aerosols (excluding explosive and toxic dusts and aerosols) ； ⑿Poor working environment: sinking foundations, defective safety passages, poor lighting, harmful light exposure, inadequate ventilation, oxygen deficiency, poor air quality, inadequate water supply and drainage, water inrush, forced postures, excessively high or low temperatures, excessively high or low air pressure, heat, natural disasters, etc ； ⒀Signal defects: lack of signaling facilities, inappropriate selection of signals, incorrect signal location, unclear signals, inaccurate signal display, etc ； ⒁Marker defects: absence of marker, unclear marker, non-standard marker, inappropriate selection of marker, defective marker location ； ⒂Others.

2. Chemical hazards ⑴ Flammable and explosive substances: flammable and explosive gases, solids, liquids, dusts, and aerosols, etc； ⑵Spontaneously combustible materials ； ⑶Toxic substances: toxic gases, liquids, solids, toxic dusts, and aerosols, etc ； ⑷Corrosive substances: corrosive gases, liquids, solids, etc ； ⑸Other chemical hazards.

3. Biological hazards: (To be continued)

4. Psychological and physiological risk factors: (To be continued)