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Regional Basic Professional Training Course in Korea

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<strong>Regional</strong> <strong>Basic</strong> <strong>Professional</strong> <strong>Tra<strong>in</strong><strong>in</strong>g</strong> <strong>Course</strong> (BPTC) on Nuclear Safety<br />

The average activity <strong>in</strong> materials released on a case‐by‐case basis for recycl<strong>in</strong>g or reuse<br />

could be, like <strong>in</strong> the case of authorized disposal, higher than the activity limits applied for<br />

clearance. The annual amounts of material go<strong>in</strong>g to one recipient should be restricted.<br />

20.5. PROCESS, TREATMENT AND<br />

DISPOSAL OF RADIOACTIVE WASTE<br />

20.5.1. Waste aris<strong>in</strong>g and their classification<br />

The ma<strong>in</strong> sources for low and <strong>in</strong>termediate level waste (LILW) from the operation of a<br />

NPP are:<br />

Clean‐up of liquids contam<strong>in</strong>ated with radioactive substances; and<br />

Repair and ma<strong>in</strong>tenance works.<br />

There are clean‐up circuits <strong>in</strong> the NPP processes (e.g. reactor and spent fuel storage<br />

cool<strong>in</strong>g systems) and for the liquids result<strong>in</strong>g from floor and equipment dra<strong>in</strong>age, laundry<br />

and showers, decontam<strong>in</strong>ation of components, and from the chemical laboratory. These<br />

clean‐up processes generate wet waste, such as spent ion‐exchange res<strong>in</strong>s, evaporator<br />

concentrates, precipitation flocculants, decanter‐centrifuge sludge, filter masses, and<br />

residues of nuclide removal processes.<br />

As a consequence of repair and ma<strong>in</strong>tenance works, dry solid waste is accumulated.<br />

❙ 1026 ❙

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