What Do I Need in UV Protection?
Ultraviolet radiation, also known as ultraviolet radiation, has a wavelength range of 100 to 400 nm. It is the shortest wavelength (100 nm) and the largest energy (12 eV) in the non-ionizing radiation spectrum. The UV index is widely used as a health education method to warn people of the danger level of sun exposure. Many countries have adopted it as a part of weather forecasting. Reducing exposure is a fundamental measure to prevent the adverse biological effects of UV.
- Ultraviolet radiation, also known as ultraviolet radiation, has a wavelength range of 100 to 400 nm. It is the shortest wavelength (100 nm) and the largest energy (12 eV) in the non-ionizing radiation spectrum. The UV index is widely used as a health education method to warn people of the danger level of sun exposure. Many countries have adopted it as a part of weather forecasting. Reducing exposure is a fundamental measure to prevent the adverse biological effects of UV.
UV risk prevention and control risk prevention and control measures
Health Education for UV Risk Control
- Enhancing health education to the public on UV hazards and their protective methods, and reducing exposure is a fundamental measure to prevent the adverse biological effects of UV. Avoid exposure to the sun around noon as much as possible. It is recommended that you do not take long sunbathing and do not use tanning. The light illuminates the skin, pays attention to the timing of summer outdoor activities and takes certain protective measures, and pays attention to the forecast of ultraviolet index.
- The ultraviolet index (UVI) refers to the degree of damage to human skin that may be caused by ultraviolet radiation reaching the ground when the sun's altitude angle is the highest. Its range of change is expressed by numbers from 0 to 15 or 16. The UV index at night is 0, and it can reach 15 or 16 on sunny days in tropical or plateau areas. The higher the UV index, the greater the risk of skin and eye damage. People should use the UV index to schedule outdoor activities. The World Health Organization (WHO) classifies the ultraviolet index into the following grades: 0 to 2, low; 3 to 5, medium; 6 to 7, high; 8 to 10, very high; 11, very high. The UV index is widely used as a health education tool to warn people of the danger level of sun exposure, and many countries have made it a part of weather forecast.
UV risk prevention and protection products
- Sunscreen: Sunscreens reduce the amount of UV rays that penetrate the skin through chemical absorption or physical reflection and scattering. The effective chemical components that absorb ultraviolet rays include p-aminobenzoic acid, cinnamate, benzophenone, and salicylic acid. Insoluble particulate matter that blocks ultraviolet rays includes inorganic powders such as zinc oxide and titanium dioxide. Do not neglect the protection of the ears and lower limbs when using sunscreen. Even after using sunscreen, do not take too long to sunbathe.
- Sunscreen clothing, glasses, and hats: For the protection of the skin, three "c" characters have been proposed abroad, that is, wearing hats, wearing long-sleeved clothes, and applying sunscreen to prevent excessive UV exposure to the skin.
Protection against UV risks against artificial UV light sources
- In the course of occupational contact, the operating regulations should be strictly followed; to improve working conditions, protective shielding can be added for electric welding operations, and automatic welding and semi-automatic welding are used to reduce manual operations; take personal protective measures, use protective equipment reasonably, wear protective glasses and protective masks. Welding site to avoid unrelated personnel watching, visitors should wear protective glasses.
UV risk prevention and health monitoring
- (1) Workers exposed to ultraviolet light, especially welding workers, should perform detailed eye examinations before employment, and inspect them regularly every 3 to 5 years.
- (2) During eye examination, visual acuity (including corrected vision), corneal fluorescein staining must be checked, and if necessary, the lens and fundus. Occupational contraindications are active corneal disease.
- (3) For dermatological examinations, pay attention to skin pigmentation and verrucous during regular physical examinations.
- (4) Conduct pre-employment and regular health checkups. Some skin diseases are forbidden to engage in ultraviolet operation. Those who find abnormalities should be promptly removed and treated.
Related standards for UV risk prevention and control
- Occupational Exposure Limits for Hazardous Factors in the Workplace Part 2: Physical Factors (GBZ2.2-2007) The standards for occupational exposure limits for ultraviolet rays in the workplace are listed in the table below.
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- For the ultraviolet spectrum of 315 400nm, the total radiation intensity of the skin and eyes projected should be no more than 10.0 W / m 2 based on the measured or output data, and the time should not exceed 100s. Should exceed 1.0 × 10 4 J / m 2 .
- For the ultraviolet spectrum of 200 to 315 nm, the total radiation intensity measurement or output data on the unprotected skin and eyes should not exceed 1.0 W / m 2 , and the energy is equivalent to a 270 nm monochromatic light source effectively irradiated for 8 hours per day . [1]