Energy is the most basic driving force of the development and economic growth of the whole world and the basis of human survival. Simultaneously is also the foundation of industrial civilization, the enterprise production without basic energy such as water, gas, air, electricity, etc., of course, the energy in the process of production must be correct and reasonable role on production equipment, if the energy in the production process out of control, not role on production equipment, but the effect on the human body, so, in this case the energy is very dangerous for the workers themselves, such as gas leakage, electric shock, mechanical injury and so on are the result of the energy is out of control of the accident.
The dangerous energy sources mentioned here include electrical energy, mechanical energy, hydraulic energy, pneumatic energy, thermal energy, potential energy, chemical energy, fluid energy, potential energy, potential energy, potential energy, residual energy, etc. (e.g., tension force, capacitance and mechanical energy). The control of hazardous energy is applicable to the installation, maintenance, overhaul and patrol inspection of all equipment and facilities; The purpose of the control is to perform the above operations with the equipment and facilities involved in a zero-energy state: all energy sources have been controlled, isolated or removed to ensure the prevention of accidental start-up of equipment or facilities or the release of dangerous energy. Methods of achieving zero energy status of a facility or facility include locking, breaking, sealing, blocking, ventilation, drainage, venting, grounding, etc.