Radioactive substances are atoms that decay naturally. They can give off alpha particles, beta particles and gamma radiation. Unlike X-ray sources they cannot be turned off, so their control is more difficult.
You can work safely around radiation and/or contamination by following a few simple precautions:
Furthermore, what is the radioactive substance? Radioactive substances are atoms that decay naturally. They can give off alpha particles, beta particles and gamma radiation. Unlike X-ray sources they cannot be turned off, so their control is more difficult.
Dedicated Equipment : Your radioisotope work area should have a set of equipment that is only used for radioactive material work. Depending on your protocol, this may include pipettors, a microcentrifuge, timers, mixers, a water bath, etc.
Radioactive substances produce alpha particles, beta particles and gamma rays. But what are these three types of dangerous radiation ? Beta particles are high-energy electrons that can penetrate through paper and even part of the way into the human body, but cause less damage when they do.
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Because of lead's density and large number of electrons, it is well suited to scattering x-rays and gamma-rays. These rays form photons, a type of boson, which impart energy onto electrons when they come into contact. When the radiation attempts to pass through lead, its electrons absorb and scatter the energy.
General principles of radiation protection from the hazard of ionizing radiation are summarized as three key words; justification, optimization, and dose limit. Because medical exposure of radiation has unique considerations, diagnostic reference level is generally used as a reference value, instead of dose limits.
Despite their ability to penetrate other materials, in general, neither gamma rays nor x-rays have the ability to make anything radioactive. Several feet of concrete or a few inches of dense material (such as lead) are able to block these types of radiation.
Staying inside will reduce your exposure to radiation.Close windows and doors. Take a shower or wipe exposed parts of your body with a damp cloth. Drink bottled water and eat food in sealed containers.
ULTRAVIOLET RADIATION AS A HAZARD IN THE WORKPLACE. Ultraviolet (UV) radiation is a known cause of skin cancer, skin ageing, eye damage, and may affect the immune system. People who work outdoors are the most likely of all workers to suffer health damage from exposure to UV radiation.
Workers can be exposed either to artificial radiation or naturally occurring radioactive material. To protect them against such an exposure, some concrete steps can be taken. These include regular monitoring, protective equipment, or countermeasures such as shielding.
How long does radioiodine stay in my body? The radioiodine from your treatment will temporarily remain in your body. Most of the radioiodine not taken up by your thyroid gland will be eliminated within the first (2) two days after treatment. Radioiodine leaves your body primarily by your urine.
Other diseases associated with radiation exposureAll cancers. Non-malignant thyroid nodular disease. Parathyroid adenoma. Posterior subcapsular cataracts. Tumors of the brain and central nervous system.
Radiation and Nuclear Health Hazards. Some examples of radiation include sunlight, radio waves, x-rays, heat, alpha, beta, gamma ionizing radiation, and infrared, just to name a few. Not all of these types of radiation are harmful, in fact, in moderation, most radiation will not pose a health risk.
Radiation sickness occurs when a person is exposed to a high dose of ionising radiation. The severity of the symptoms and illness depends upon the type and amount of radiation, length of exposure and the part of the body exposed. Initial symptoms include nausea, vomiting, headache and diarrhoea.
Radiation and living cells When radiation collides with molecules in living cells it can damage them. We use this property of radiation to kill cancer cells, and also harmful bacteria and other micro-organisms. The hazard symbol is shown on containers of radioactive substances to warn of the danger.
The radiation in Hiroshima and Nagasaki today is on a par with the extremely low levels of background radiation (natural radioactivity) present anywhere on Earth. It has no effect on human bodies.
In some situations, sealed radioactive sources may be stored in a shielded container that is designed to reduce and control radiation in the area around the source. Such containers are typically extremely heavy, with most using lead as a shielding material within the container.
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