What kind of radioactive waste materials are generated by nuclear power stations?
It is likely that small amounts of radioactive particulates and gases (either from the reactor core or from the surrounding materials) become airborne in the reactor building and get mixed up in the ventilation air. Air from the building is passed through high efficiency particulate air filters before being discharged to the atmosphere through a 100 m tall stack. The maximum quantities of these radioactive substances that are allowed to be discharged are prescribed by the Atomic Energy Regulatory Board (AERB). Sources of solid waste are metal scrap, resins used to purify process water, filters used to clean the air before it is discharged to the atmosphere, mops used to clean up contaminated surfaces and gloves and plastic apparel worn by the operators when working with radioactive material. Less than 100 cubic metres of these wastes are produced at Madras Atomic Power Station, annually. Liquid waste arises primarily from the sinks and showers where all operating personnel have a thoro
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