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 Re: كلام عن الموبايل وعائلته (Re: Asim Ali)
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ALARA (As Low As Reasonably Achievable) is a safety principle designed to minimize radiation doses and releases of radioactive materials. More than merely best practice, ALARA is predicated on legal dose limits for regulatory compliance, and is a requirement for all radiation safety programs.
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How can you reduce external radiation exposure؟
Time
Reducing the time of exposure can directly reduce radiation dose. Dose rate is the total amount of radiation absorbed relative to its biological effect. Dose rate is the rate at which the radiation is absorbed. Limiting the time of radiation exposure will reduce your radiation dose.
.Distance
Increasing the distance between you and the radiation source you will reduce exposure by the square of the distance. Doubling the distance between your body and the radiation source will divide the radiation exposure by a factor of 4.
Shielding
Lead or lead #####alent shielding for X-rays and gamma rays is an effective way to reduce radiation exposure. There are various types of shielding used in the reduction of radiation exposure including lead aprons, mobile lead shields, lead glasses, and lead barriers. When working in radiation areas it is important to use shielding whenever possible.
How can you reduce internal radiation exposure؟
Good Hygiene
Practicing good hygiene and housekeeping habits effectively moderate the internal radiation hazards presented by radionuclides. By eliminating the presence of food and drink in areas where radioactive materials are used or stored, and controlling “hand to mouth” habits, the risk of internal radiation exposure is reduced.
Control of Contamination
Labeling radioactive and potentially radioactive areas and items will help prevent the spread of contamination. It is important to control contamination with absorbent papers and spill trays and placing any contaminated item in a properly labeled waste container. When a contamination occurs it is important to promptly decontaminate the area to prevent the spread of the contaminate.
Airborne Hazards
Using fume hoods and avoiding dust, aerosol, or volatile gas production can reduce the potential for inhalation of radioactive substances.
Use Proper PPE
Using the proper personal protective equipment (PPE) such as disposable gloves, safety glasses, lab coats, etc. will help reduce the possibility of ingestion or absorption of radioactive materials.
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مبدا (ALARA) معمول به بشكل أساسي في مجال الأشعة المؤينة ولكن توافق الكثير من المختصين ومراكز البحوث على العمل به في محال الأشعة غير المؤينة رغم صعوبة وضع حدود قياسيه للتعرض (exposure) كما هو الحال للاسعه المؤينة.
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Asim Ali
فيس بوك
تويتر
انستقرام
يوتيوب
بنتيريست