Electrical safety is the science, technology and management engineering related to electricity in the field of safety. Including electrical safety practice, electrical safety education and electrical safety scientific research. Electrical safety is an applied science with safety as its goal and electricity as its field. It includes electrical safety and electrical safety, and its basic theory is electromagnetism theory and safety principle.

Due to the wide application of electric energy, electrical safety is also widespread. No matter in the production field or in the life field, it is inseparable from electricity and will encounter various electrical safety problems. Electrical safety also has comprehensive characteristics, which is closely related not only to the power industry, but also to construction, coal, metallurgy, petroleum, chemical industry, machinery and other industries; Moreover, the electrical safety work has both the engineering technology side and the organization management side.

Electrical safety evaluation includes two aspects: effectiveness and economy evaluation. This paper focuses on the effectiveness evaluation of electrical safety. The electrical safety effectiveness evaluation of the system is to evaluate whether the layout of each part of the system is reasonable, whether the electrical safety precautions taken by each part are reasonable, whether the work can be coordinated, and whether there is a dead zone of electrical safety in the whole system from the perspective of electrical safety. That is, identify the electrical hazard factors in the real system of industrial enterprises, and predict the possibility and consequences of accidents caused by electrical thermal effect, chemical effect and mechanical effect, so as to put forward electrical safety measures and rectification suggestions.

For general industrial enterprises, electrical accidents mainly include electric shock, electrical fire and explosion, lightning hazard and electrostatic hazard. However, for enterprises in different industries, due to their different raw materials, production equipment and production processes, the focus of electrical accidents is also different. For example, in the electrical safety assessment of oil field units, since fire and explosion are prone accidents with great losses, electrical fire and explosion, lightning hazards and electrostatic hazards should be the key points of the assessment. As for the mechanical processing plant, because of the large metal existence coefficient in the workshop, electric shock accidents are easy to occur, so electric shock should be the focus of evaluation.