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Regional Basic Professional Training Course in Korea

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4.1.5.9. Radiation protection<br />

General requirements<br />

❙ 269 ❙<br />

4. DESIGN OF NUCLEAR REACTORS<br />

Radiation protection is directed to prevent<strong>in</strong>g any avoidable radiation exposure and to<br />

keep<strong>in</strong>g any unavoidable exposures as low as reasonably achievable. This objective shall<br />

be accomplished <strong>in</strong> the design by means of the follow<strong>in</strong>g:<br />

Appropriate layout and shield<strong>in</strong>g of structures, systems and components conta<strong>in</strong><strong>in</strong>g<br />

radioactive materials;<br />

Pay<strong>in</strong>g attention to the design of the plant and equipment so as to m<strong>in</strong>imize the<br />

number and duration of human activities undertaken <strong>in</strong> radiation fields and reduce<br />

the likelihood of contam<strong>in</strong>ation of site personnel;<br />

Mak<strong>in</strong>g provision for the treatment of radioactive materials <strong>in</strong> an appropriate form<br />

and condition, for either their disposal, their storage on the site or their removal<br />

from the site; and<br />

Mak<strong>in</strong>g arrangements to reduce the quantity and concentration of radioactive<br />

materials produced and spread with<strong>in</strong> the plant or released to the environment.<br />

Design for radiation protection<br />

Suitable provision shall be made <strong>in</strong> the design and layout of the plant to m<strong>in</strong>imize<br />

exposure and contam<strong>in</strong>ation from all sources. Such provision shall <strong>in</strong>clude adequate<br />

design of systems and components <strong>in</strong> terms of: m<strong>in</strong>imiz<strong>in</strong>g exposure dur<strong>in</strong>g ma<strong>in</strong>tenance<br />

and <strong>in</strong>spection; shield<strong>in</strong>g from direct and scattered radiation; ventilation and filtration for<br />

control of airborne radioactive materials; limit<strong>in</strong>g the activation of corrosion products by<br />

proper specification of materials; means of monitor<strong>in</strong>g; control of access to the plant; and<br />

suitable decontam<strong>in</strong>ation facilities.<br />

The shield<strong>in</strong>g design shall be such that radiation levels <strong>in</strong> operat<strong>in</strong>g areas do not exceed

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