What is the radiation safety distance of the mining machine

4. With the improvement of living standards, more and more electrical procts enter the home. These electrical appliances will proce electromagnetic radiation more or less. Electromagnetic radiation above 2 MGS will cause people to suffer from diseases. 1. The electromagnetic radiation of TV is about 20 MGS. There are many kinds of TV sets on the market: 1. CRT TV (ordinary TV) has the largest radiation; 2 Plasma TV radiation is relatively large. 3. LCD TV and plasma TV radiation are the least. 6. Prevent TV radiation. 1. Maintain a certain viewing distance. The radiation range of TV generally refers to the length. The radiation range of LCD TV is generally within 2 meters, while the viewing distance of flat panel TV above 42 inches is 2 ~ 3 meters. In addition, if you watch a large screen close to you for a long time, you will have visual fatigue, so you should consider the size of the room when you buy it, not blindly trying to be big. Generally, the viewing distance is between 2 and 2.5 meters, and 29 inch procts can be selected; For 2.5-3 meters, 34 inch procts can be selected, and for 3.5 meters or more, 37 Inch or 40 inch procts can be selected. 2. Recing st means recing radiation. The LCD TV is covered with st. Many people think it's just a health problem. It's not that simple. It is proved that st is an important carrier of electromagnetic radiation. If you don't wipe your LCD TV regularly, even if you turn them off, the electromagnetic radiation will remain in the st and continue to be harmful to your health. Therefore, it's better to wipe the LCD TV regularly to remove the st and the electromagnetic radiation in it, which can effectively prevent the harm of radiation to health. In addition, st will make electronic components, circuit boards and radiators often overload, and eventually lead to increased power consumption, and even burn electronic components. 3. LCD TVs have less radiation, but many of them are high radiators. Therefore, try not to place too many electrical appliances near the LCD TV, such as refrigerators and TVs, as far away as possible. In addition to avoiding the radiation effect of these electrical appliances when watching TV (their radiation range is wider than that of LCD TV), we should also avoid magnetic field interference. Another example is that the TV and the sound box need to keep a certain distance, not too close, because there are magnetic speakers in the recorder and the sound box, and form a strong magnetic field around, which will directly affect the electromagnetic field of the LCD TV. In addition, do not place miscellaneous metal objects in the room, so as to avoid the re emission of electromagnetic wave. 4. Let green plants share the radiation. All animals, plants and human bodies have the natural ability to absorb radiation. Therefore, we can put some green plants beside the LCD TV to rece radiation. However, there are certain restrictions on placing green plants next to LCD TVs, because many LCD TVs do not have waterproof protection, and the internal circuit board of the heat dissipation grid will directly contact with the outside air. If there are aquatic plants or too many green plants next to the LCD TV, the humidity will seriously affect the safety and service life of electrical appliances. Therefore, put in the LCD TV near the best is similar to cactus, cactus or aloe and other drought resistant green plants. 5. Tea while watching TV. Experts believe that drinking more green tea at ordinary times can play a certain role in anti radiation. The vitamin C and vitamin E contained in green tea, especially tea polyphenols, have strong antioxidant activity and can eliminate oxygen free radicals in the human body, so as to play the role of anti radiation and enhance the body's immunity. In addition, tea contains carotene, which can be converted into vitamin A under the action of intestinal wall and liver. Vitamin A can nourish eyes, relieve eye fatigue and prevent night blindness. In addition, the radiation proced by the TV screen will cause the human body to dry and water shortage, accelerating aging. Therefore, you may as well make a pot of tea in the process of watching TV, which can not only resist radiation, but also replenish water for your body. If you are not used to drinking green tea, chrysanthemum tea can also resist computer radiation and regulate body function. 6. Turn off the TV to guard against radiation accumulation. Although the radiation of LCD TV is small, the radiation still exists. Therefore, when the LCD TV is suspended, it is better not to let them be in standby mode, because it can proce weak electromagnetic field and radiation accumulation for a long time. 2、 Electromagnetic radiation of computer: 25 MGS on laptop keyboard, 0.5 MGS away from 20 cm; Desktop computer - 0.6 MGS 30 cm away from the LCD screen and about 1 MGS at the machine. The LCD screen of some companies is 4 milligauss away from 50cm. What equipment does computer radiation mainly exist in? 1. SUBWOOFER SPEAKER 2, CRT display (ordinary display) 3, desktop computer host 4, radiation index of wireless mouse and wireless keyboard seven ways to rece computer radiation 1. Avoid long-time continuous operation of the computer, pay attention to the middle of the rest to maintain the most appropriate posture, the distance between the eyes and the screen should be 40 ~ 50 cm, so that both eyes look flat or slightly down at the fluorescent screen. 2. Maintain a good indoor working environment, such as comfortable temperature, clean air, appropriate anion concentration and ozone concentration. 3. The light in the computer room should not be too bright or too dark, so as to avoid the interference caused by the light directly shining on the fluorescent screen. Keep the studio well ventilated and dry. 4. Use color filter on the screen of computer to rece light fatigue. Glass or high quality plastic filters are preferred. 5. Install protective devices to rece the intensity of electromagnetic radiation. 6. Pay attention to keep your skin clean. There is a large amount of static electricity on the surface of the computer screen. The accumulated st can be transferred to the bare skin of the face and hands. After a long time, it is easy to develop rash, pigmentation, and even skin lesions. 7. Pay attention to supplement nutrition. If the computer operator works too long in front of the screen, the rhodopsin on the retina will be consumed, and the rhodopsin is mainly synthesized by vitamin A. Therefore, computer operators should eat more carrots, cabbage, bean sprouts, tofu, red dates, oranges, milk, eggs, animal liver, lean meat and other food to supplement vitamin A and protein in the human body. 3、 The radiation of refrigeration and heating appliances, whether it is air conditioning in summer or heating in winter, urban people are increasingly inseparable from these devices, even stay for 24 hours. 1. Electromagnetic radiation of humidifier: if the front is more than 100 MGS, it will drop to less than 1 MGS after leaving 40 cm. 2. Electromagnetic radiation of electric blanket: 20-100 MGS at a distance of 5 cm 3. Electromagnetic radiation of refrigerator: 5 MGS at the bottom of the front, and it drops to less than 1 MGS at a distance of 30 cm. 4. Electromagnetic radiation of air conditioner: the outdoor unit is 15 MGS away from 50 cm and 1.6 MGS away from 1 m. Prevention method: the radiation of humidifier favored by women is so large. Therefore, do not put it too close to the body when using it; The electric blanket is the most harmful to pregnant women, children and the elderly. It should be used with caution, because the electric blanket itself is equivalent to an electromagnetic field. Even if the power is turned off, the radiation will still disturb the natural electric field in the body. 4. The radiation of kitchen and bathroom appliances 1. The electromagnetic radiation of cordless telephone: 200 MGS 2. The electromagnetic radiation of vacuum cleaner: 200 MGS 3. The electromagnetic radiation of electric whisker knife: 100 MGS 4 Electromagnetic radiation of hair dryer: distance 15 cm, 10 MGS. Over 100 milligauss at the handle. It may affect the brain. Please don't use it for a long time. 5. VCD electromagnetic radiation: 10 milligauss 6. Electric iron electromagnetic radiation: 3 milligauss prevention method: cordless telephone radiation is the biggest, pregnant mother should not touch as far as possible; Electric iron radiation is not small, it is recommended to heat the temperature once in place, with a while and then continue to heat, do not heat while ironing clothes; When opening and closing the hair dryer, try to stay away from the head. When using, it's better to keep the hair dryer perpendicular to the head. Do not use it continuously for a long time. It's better to stop intermittently. 5、 Electromagnetic radiation of other commonly used household appliances: 1. Electromagnetic radiation of microwave oven: 40-102 MGS away from 10 cm, 4.3-8.2 MGS away from 50 cm; 2. Electromagnetic radiation of inction cooker and electric hotpot: 80-370 MGS away from 10 cm, 5.5-7.2 MGS away from 50 cm; 3. Electromagnetic radiation of electric cooker: 2-10 MGS within 30 cm of cooking and heat preservation. Keep a distance and pull off the plug after use. 4. Washing machine electromagnetic radiation: close to the washing machine more than 100 MGS; When the front is 30 cm away and the side is 70 cm away, it will drop to less than 1 milligauss. 5. Electromagnetic radiation of clothing dryer: if the front is more than 100 MGS, it will drop to less than 1 MGS when it is 40 cm away. Prevention: microwave oven is worthy of the "radiation king", the biggest radiation is at the crack of the door, the biggest radiation is at the start, so do not cook too close, use at least 0.5 meters away from the oven, eyes do not look at the door, do not stand in front of the oven for a long time, food out of the oven, it is best to put a few minutes to eat; Inction cooker, electric hot pot use time is not too long, use also to maintain a certain distance.

5. 200-300 meters
cobalt-60 has strong radiation, can cause hair loss, can seriously damage the cell tissue in human blood, cause leukopenia, cause blood system diseases, such as aplastic anemia, serious can make people suffer from leukemia (blood cancer), even death.

6. In nature, there is a kind of radiation source called electromagnetic wave radiation, which has been found and widely used in daily life. Electromagnetic cookers, ovens and microwave ovens are all based on the basic principles of electromagnetic radiation. However, all normal people should understand that if there are too many radiation sources, it will have a great impact on one's physical and mental health. Therefore, in every country, there should be a normal detection standard for electromagnetic radiation, How much is the detection standard of electromagnetic radiation in China

safety standard of electromagnetic radiation

1. National instry standard of electromagnetic radiation. In the regulations on electromagnetic radiation protection (GB8702-88) issued by the Ministry of finance of the people's Republic of China, it is clear that the national instry standard of electromagnetic wave radiation is: in the frequency range of 30-3000mhz, when the masses are directly exposed to the environment for 24 hours a day, the average value of the main parameters of electromagnetic wave radiation field in the natural environment within 6 minutes should not exceed 0.4w/m2, which is also called heavy smoke of electronic devices, It is composed of electric energy and magnetic kinetic energy transferred from each other in indoor space, and the kinetic energy is caused by the movement of positive charge. For example, the moving positive charge from a radio frequency antenna that has sent a signal will cause electromagnetic inction kinetic energy. Electromagnetic inction "frequency band" includes all kinds of electromagnetic wave radiation, from extremely low frequency electromagnetic wave radiation to extremely high frequency electromagnetic wave radiation. There are also electromagnetic waves, microwave heating, infrared inction, visible light and ultraviolet between them. The general definition of the intermediate frequency part of the electromagnetic inction frequency band refers to the radiation source whose frequency is about 3 kHz to 300 GHz. Some electromagnetic radiation has a certain effect on the body

2. What is the electromagnetic radiation detection standard? In order to reasonably maintain the physical and mental health of workers, avoid ignition and explosion, affect electronic procts and avoid environmental pollution, the maximum allowable limit value of electromagnetic inction intensity in different sites is formulated. It includes electromagnetic radiation work detection standard, electromagnetic radiation natural environment detection standard, electromagnetic inction leakage control standard and electromagnetic radiation impact standard

3? Electromagnetic radiation is divided into two levels: in which the power frequency band of the enterprise is μ T. Detect the DC radio wave below the frequency of 50 Hz For example, household appliances, high voltage wires) if the radiation source is 0.4 μ Above t is attributed to the stronger radiation source. The radiation source ranges from 0.3 to 0.4 μ T, which belongs to the warning value for 0.3 μ T is very 0.1 μ T below, can feel is security, and frequency radiates the enterprise of radio wave is μ W / cm2 (for example, microwave oven heating, mobile phone, TV broadcasting communication base station, measuring the frequency range of several hundred to over 1000 Hz), 10 μ W / cm 2 or more will cause damage to the body.

7. Chest X-ray has radiation
at least you can't go into the inner room
if there are too many obstructions (such as walls), the radiation is difficult to penetrate. If you are worried, you can buy anti radiation clothes for pregnant women
in addition, cactus can absorb radiation

8. The radiation of the printer is very low, and the part of the circuit that proces electromagnetic vibration is equipped with a metal shield. The radiation amount meets the national safety standard. In daily electrical appliances, the largest amount of electromagnetic radiation should be mobile phones. Because mobile phones need to transmit and receive electromagnetic waves. Printers don't need to. Mobile phone radiation is still in the safe range, not to mention the printer.

9. Pay attention not to be exposed to the front!!! X-ray machine is generally directional exposure, when it works, do not stand in front. In addition, there is a little radiation around, but the harm is relatively small. Try not to do the work on the radiation site before you want children. It's not a big problem after you want children.

10. Computer radiation will not be too dangerous, it is recommended to keep a safe distance: 0.5m or more screen
1. When the computer is in use, the display screen will emit electromagnetic and ionizing radiation. Often working in front of the computer, will make human skin aging, resulting in rough skin, and even skin inflammation and other lesions. Generally speaking, the greater the brightness of the screen, the stronger the electromagnetic radiation, and vice versa. However, it should not be too dark, so as not to affect the viewing effect e to too small brightness, and easy to cause eye fatigue. When operating the computer, pay attention to keep a proper distance from the screen. The closer to the screen, the greater the electromagnetic radiation the human body is exposed to, so it is better to be 0.5m away from the screen. In addition, after operating the computer, many particles of electromagnetic radiation will be absorbed on the face. Wash the face with clean water in time, which will rece the radiation by more than 70%< Many countries in the world have established safety standards. China has also formulated safety standards for displays. It has been implemented since December 1999. According to the safety standards, the display itself has anti ionizing radiation, anti-static, anti reflective and other protective functions. According to the measurement, the annual additional dose of ionizing radiation for staff working at 70cm from the display surface for 8 hours / day is far lower than the dose limit for members of the public in China. In addition, professional measurement shows that the dose ratio at the center of the surface is 0.992 when the display is installed in front of the screen or not, which has no difference with the radiation dose rate level without the screen. The additional visual protection screen will not have any actual protective effect on ionizing radiation. On the contrary, it may affect vision. The LCD display will not proce electromagnetic radiation and acoustic radiation.