Standards for the amount of electromagnetic radiation generated by electric arc furnaces and the impact on the surrounding environment

In order to protect the environment, safeguard public health, and promote the development of legitimate practices accompanied by electromagnetic radiation, the State Environmental Protection Administration issued the "Regulations on Protection against Electromagnetic Radiation" (GB 8702-88) on the electromagnetic radiation exposure limits are specified in detail, of which 30-3000 MHz, the most sensitive range of the public within the standard limit of 0.4W/m2, which is 4 times more stringent than the Western and international standards. It is 4 times stricter than the western and international standards.

The specific standards of "Regulations on Protection against Electromagnetic Radiation" are as follows:

Occupational Exposure During the working period of 8 hours a day, the Specific Absorption Rate (SAR) of the whole body averaged over any consecutive 6-minute period is less than 0.1W/kg.

Public Exposure During the 24-hour period of a day, the Specific Absorption Rate (SAR) of the whole body averaged over any consecutive 6-minute period should be less than 0.02W/kg.

The specific absorption rate refers to the power of electromagnetic radiation absorbed per unit mass of the organism, i.e., the absorbed dose rate, in W/kg.

The main effects on people are "electric field strength", "magnetic field strength", "power density", "power density", "power density", "power density", "power density", "power density", "power density", "power density", "power density", "power density", "power density" and "power density", "Power density" in the first two of the three indicators, they are the power supply voltage of the arc furnace, and the maximum operating current has a relationship.