تدريب Shadowing: What is radioactive waste? - تعلم التحدث بالإنجليزية عبر الفيديو

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What is radioactive waste?
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Radioactive waste is any liquid, gas, or solid that contains a radioactive nuclear substance and for which there is no foreseeable use.
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There are four general classes of radioactive waste in Canada.
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Uranium mine and mill waste, low -level radioactive waste, intermediate -level radioactive waste, and high -level radioactive waste.
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The first of the four general classes is uranium mine and mill waste.
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This includes tailings and waste rock generated by the mining and milling of uranium ore.
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Tailings have the consistency of fine sand, while waste rock is simply gravel and broken up rock.
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Next, we have low -level radioactive waste, which is more radioactive than clearance levels and exemption quantities allow.
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It requires isolation and containment for up to several hundred years.
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Nuclear power plants, research reactors, test facilities, radioisotope manufacturers or users,
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uranium refining and conversion, and nuclear fuel fabrication facilities produce low -level waste.
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It can come in various forms such as used equipment, paper, cable, clothing, decommissioned parts and even mops.
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Thirdly, we have intermediate level radioactive waste which contains concentrations of long -lived radionuclides, elements that emit radiation.
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It requires isolation and containment for longer than several hundred years.
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Nuclear power plants, prototype and research reactors, test facilities and radioisotope manufacturers and users produce intermediate level waste.
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It can come in the form of refurbishment waste, such as old components, ion exchange resins,
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and some radioactive sources used in radiation therapy.
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Lastly, we have high -level radioactive waste, which is primarily used nuclear fuel,
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along with small amounts of waste that generate significant heat and radioactivity.
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It requires long -term isolation.
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Nuclear power plants, prototype and research reactors, and test facilities produce high -level waste.
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It comes in the form of used nuclear fuel that is still significantly radioactive.
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The Canadian Nuclear Safety Commission regulates all classes
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and forms of radioactive waste in Canada to protect the health and safety of people and the environment.
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You can find more More info at nuclearsafety .gc .ca.

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