I. occupational exposure limits (GBZ 2. 1-2007)
1, allowable concentration of chemicals in workplace air (see GBZ 2. 1-2007 table 1)
2. Allowable concentration of dust in workplace air (see table 2 of GBZ 2. 1-2007)
3. Allowable concentration of biological factors in workplace air (see table 3 of GBZ 2. 1-2007)
Second, the physical factors occupational exposure limits (GBZ 2.2-2007)
1, UHF radiation occupational exposure limits workplace UHF radiation occupational exposure limits.
◇ UHF radiation: also known as ultrashort wave, refers to electromagnetic radiation with frequency of 30MHz~300MHz or wavelength of 10m~ 1m, including pulse wave and continuous wave.
See table GBZ 2.2-2007 1 for the occupational exposure limits of UHF radiation in the workplace.
◇ The measurement method shall comply with the provisions of GBZ/T 189. 1.
2. High frequency electromagnetic field occupational exposure limits high frequency electromagnetic field occupational exposure limits.
◇ High-frequency electromagnetic field: the frequency is 100kHz~30MHz, and the corresponding wavelength is 3 km ~ 10 m. ..
See Table 2 of GBZ 2.2-2007 for the occupational exposure limits of high-frequency electromagnetic field in workplace.
◇ The measurement method shall comply with the provisions of GBZ/T 189.2.
3. Power frequency electric field occupational exposure limits workplace power frequency electric field occupational exposure limits.
Power frequency electric field: extremely low frequency electric field with frequency of 50Hz.
See Table 3 of GBZ 2.2-2007 for the occupational exposure limits of power frequency electric field in the workplace.
◇ The measurement method shall comply with the provisions of GBZ/T 189.3.
4. Laser radiation occupational exposure limits workplace laser radiation occupational exposure limits.
Laser: coherent light radiation with wavelength between 200 nm and 1 mm.
See Table 4 of GBZ 2.2-2007 for the occupational exposure limits of direct-looking laser beam.
See Table 5 of GBZ 2.2-2007 for the occupational exposure limits of laser irradiated skin.
◇ The measurement method shall comply with the provisions of GBZ/T 189.4.
5, microwave radiation occupational exposure limits workplace microwave radiation occupational exposure limits.
◇ Microwave: electromagnetic wave with frequency of 300MHz~300GHz and wavelength of 1m~ 1mm, including pulse microwave and continuous microwave.
See Table 6 of GBZ 2.2-2007 for the microwave occupational exposure limits in the workplace.
◇ The measurement method shall comply with the provisions of GBZ/T 189.5.
6. Ultraviolet radiation occupational exposure limits workplace ultraviolet radiation occupational exposure limits.
◇ ultraviolet ray: also known as ultraviolet ray, refers to electromagnetic radiation with the wavelength of 100nm~400nm.
See Table 7 of GBZ 2.2-2007 for the occupational exposure limits of ultraviolet radiation in the workplace.
◇ The measurement method shall comply with the provisions of GBZ/T 189.6.
7. High-temperature operation occupational exposure limits workplace high-temperature operation occupational exposure limits.
◇ High temperature operation: the operation in which the average WBGT index in the workplace is ≥25℃ during production and labor.
◇WBGT index: also known as wet bulb temperature, is a basic parameter to comprehensively evaluate the thermal load of human exposure to working environment.
See Table 8 of GBZ 2.2-2007 for WBGT limits of different physical labor intensities in the workplace.
◇ The measurement method shall comply with the provisions of GBZ/T 189.7.
8. Noise occupational exposure limits Workplace Noise occupational exposure limits
See Table 9 in GBZ 2.2-2007 for occupational exposure limits of workplace noise.
See table GBZ 2.2-2007 10 for the occupational exposure limits of impulse noise in the workplace.
◇ The measurement method shall comply with the provisions of GBZ/T 189.8.
9. Hand-transmitted vibration occupational exposure limits workplace hand-transmitted vibration occupational exposure limits.
◇ Hand-transmitted vibration: Mechanical vibration or impact that directly acts on or is transmitted to the human arm when using a hand-held vibration tool or touching a vibrating workpiece in production.
See table GBZ 2.2-2007 1 1 for the occupational exposure limits of hand-transmitted vibration in the workplace.
◇ The measurement method shall comply with the provisions of GBZ/T 189.9.
10 meteorological requirements for underground workplaces in coal mines.
◇ The meteorological conditions of underground mining workplaces shall comply with the provisions of Table 12 in GBZ 2.2-2007.
◇ Use a ventilation hygrometer to measure the temperature and humidity in the workplace, and use a hot ball anemometer or a vane anemometer to measure the wind speed.
1 1, physical labor intensity, physical workload classification
See table GBZ 2.2-2007 13 for the classification table of physical labor intensity.
◇ The measurement method shall comply with the provisions of GBZ/T 189. 10.
12, the physiological limit of heart rate and energy consumption during manual work.
Energy consumption: the energy consumed by the human body to maintain physiological functions and various activities, in kJ.
The maximum heart rate shall not exceed 150 beats/min when engaging in any single manual labor in working days; The average maximum heart rate of each operation should not exceed 65438 020 beats/min.
The total energy consumption of a person's working day (8 hours) should not exceed 6276kJ.
◇ The method of measuring the heart rate during manual labor in the workplace is measured according to the method specified in GBZ/T 189 438+0438+0.
◇ The determination method of total energy consumption on working days (8h) during manual labor in the workplace is determined according to the method specified in GBZ/T 189. 10.