This standard specifies the occupational exposure limits of physical agents in the workplace.
This standard is applicable to every kind of workplace where physical agents exist or are generated. It is applicable to the health condition of the workplace, labor condition, the degree of labor contacting physical agents, leakage of production plant, monitoring, assessment, management of the effect of protective measures, supervision of health design of industrial enterprise and occupational health.
This standard is not applicable unprofessional contact.
The following standards contain provisions which, through reference in this part, constitute provisions of this part. For dated references, all subsequent modification or revision (excluding correction contents) are not applicable to this Part. However, all concerned Parties are encouraged to study if the latest editions of these documents can be applied. For undated references, the latest editions of the normative documents are applicable to this part.
GBZ 1 Hygienic Standards for the Design of Industrial Enterprises
GBZ 2.1 Occupational Exposure Limit for Hazardous Agents in the Workplace -Chemical Agents
GB/T 3947 Acoustical terminology
GB/T 189.1 Measurement of Physical Agents in Workplace Part 1: Ultra High Frequency Radiation
GB/T 189.2 Measurement of Physical Agents in Workplace Part 2: High Frequency Electromagnetic Field
GB/T 189.3 Measurement of Physical Agents in Workplace Part 3: Power Frequency Electric Field
GB/T 189.4 Measurement of Physical Agents in Workplace Part 4: Laser Radiation
GB/T 189.5 Measurement of Physical Agents in Workplace Part 5: Microwave Radiation
GB/T 189.6 Measurement of Physical Agents in Workplace Part 6: Ultraviolet Radiation
GB/T 189.7 Measurement of Physical Agents in Workplace Part 7: Heat Stress
GB/T 189.8 Measurement of Physical Agents in Workplace Part 8: Noise
GB/T 189.9 Measurement of Physical Agents in Workplace Part 9: Hand-transmitted Vibration
GB/T 189.10 Measurement of Physical Agents in Workplace Part 10: Classification of Physical Workload
GB/T 189.11 Measurement of Physical Agents in Workplace Part 11: Heart Rate on Physical Work
Terms and definitions specified in 3.1, 3.3 and 3.4 of GBZ 2.1 are applicable to this standard.
4.1.1 Ultra high frequency radiation
It is also known as ultra-short wave, which is electromagnetic radiation with a frequency of 30 MHz ~ 3.0 MHz or a wave length of 10m~1m, including pulse wave and continuous wave.
4.1.2 Pulse wave
It is an ultra high frequency radiation produced by impulse modulation.
4.1.3 Continuous wave
It is an ultra high frequency radiation produced by continuous vibration.
4.1.4 Power density
It is the radiated power of a unit area and represented by P and the unit is unit is mW /cm².
