Detail of GBZ 2.2-2007

Introduction of GBZ 2.2-2007

1 Scope This part specifies the occupational exposure limits of physical agents in the workplace. This part 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 part is not applicable unprofessional contact. 2 Normative References 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” GBZ/T 189.1 “Measurement of Physical Agents in Workplace—Part 1: Ultra High Frequency Radiation” GBZ/T 189.2 “Measurement of Physical Agents in Workplace—Part 2: High Frequency Elec- tromagnetic Field” GBZ/T 189.3 “Measurement of Physical Agents in Workplace—Part 3: Power Frequency Electric Field” GBZ/T 189.4 “Measurement of Physical Agents in Workplace—Part 4: Laser Radiation” GBZ/T 189.5 “Measurement of Physical Agents in Workplace—Part 5: Microwave Radiation” GBZ/T 189.6 “Measurement of Physical Agents in Workplace—Part 6: Ultraviolet Radiation” GBZ/T 189.7 “Measurement of Physical Agents in Workplace—Part 7: Heat Stress” GBZ/T 189.8 “Measurement of Physical Agents in Workplace—Part 8: Noise” GBZ/T 189.9 “Measurement of Physical Agents in Workplace—Part 9: Hand-transmitted Vibration” GB/ZT 189.10 “Measurement of Physical Agents in Workplace—Part 10: Classification of Physical Workload” GBZ/T 189.11 “Measurement of Physical Agents in Workplace—Part 11: Heart Rate on Physical Work” 3 Terms and Definitions Terms and definitions specified in 3.1, 3.3 and 3.4 of GBZ 2.1 are applicable to this part. 4 Occupational Exposure Limits for Laser Radiation in the Workplace 4.1 Terms and Definitions 4.1.1 Ultra high frequency radiation It is also known as ultra-short wave, which is electromagnetic radiation with a frequency of 30MHz~3.0MHz 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 mW/cm². 4.2 Health Requirements See Table 1 for occupational exposure limits for ultra high frequency radiation in one working day.

Contents of GBZ 2.2-2007

1 Scope 2 Normative References 3 Terms and Definitions 4 Occupational Exposure Limits for Laser Radiation in the Workplace 4.1 Terms and Definitions 5 Occupational Exposure Limits for High Frequency Electromagnetic Field 5.1 Terms and Definitions 5.2 Health Requirements 5.3 Measurement Method 6 Occupational Exposure Limits for Power Frequency Electric Field in the Workplace 6.1 Terms and Definitions 6.2 Health Requirements 7 Occupational Exposure Limits for Laser Radiation in the Workplace 7.1 Terms and Definitions 7.2 Health Requirements 7.3 Measuring Method 8 Occupational Exposure Limits for Microwave Radiation in the Workplace 8.1 Terms and Definitions 8.2 Health Requirements 8.3 Measuring Method 9 Occupational Exposure Limits for Ultraviolet Radiation in the Workplace 9.1 Terms and Definitions 9.2 Health Requirements 9.3 Measuring Method 10 Occupational Exposure Limits for Heat Stress Work in the Workplace 10.1 Terms and Definitions 10.2 Health Requirements 10.3 Measuring Method 11 Occupational Exposure Limits for Noise in the Workplace 11.1 Terms and Definitions 11.2 Health Requirements 11.3 Measuring Method 12 Occupational Exposure Limits for Had-transmitted Vibration in the Workplace 12.1 Terms and Definitions 12.2 Health Requirements 12.3 Measuring Method 13 Meteorological Requirements in the Underground Workplace of Coal Mine 13.1 Health Requirements 13.2 Measuring Method 14 Classification of Physical Workload 14.1 Terms and Definitions 14.2 Classification of Physical Workload 14.3 Measuring Method 14.4 Refer to Appendix B for Professional Description of the Classification of Physical Workload in the Real Work. 15 Physiological Limits on Heart Rate and Energy Consumption during Physical Work 15.1 Terms and Definitions 15.2 Health Requirements 15.3 Measuring Method Appendix A (Normative) Operating Instructions Appendix B (Informative) Classification of Physical Workload for Common Professions