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Regional Basic Professional Training Course in Korea

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❙ 321 ❙<br />

5. SITING CONSIDERATIONS<br />

Floods of all orig<strong>in</strong>s (<strong>in</strong>clud<strong>in</strong>g failures of dams and submersions follow<strong>in</strong>g an<br />

earthquake);<br />

Extreme weather phenomena (tornadoes, cyclones, snow, and frost).<br />

For all these events, it is necessary:<br />

To perform an <strong>in</strong>vestigation <strong>in</strong> depth of each category of event: census and<br />

classification accord<strong>in</strong>g based on these <strong>in</strong>vestigations;<br />

To def<strong>in</strong>e the parameters of an event to their potential effects on the safety of the<br />

<strong>in</strong>stallation;<br />

Hav<strong>in</strong>g some envelope character (high severity and low frequency) that is<br />

sufficiently plausible: plant design features must ensure safety with respect to the<br />

effects of these events.<br />

Code [5.1] states that the natural phenomena must be expressed <strong>in</strong> terms that can be used<br />

as <strong>in</strong>put data to deduce the design‐bases, and that the data, if possible, will be specific to<br />

the site or come from comparable regions.<br />

5.2.4. Criteria connected with external events caused by human<br />

activity<br />

These concern:<br />

Aircraft crashes;<br />

Explosions of chemical orig<strong>in</strong>;

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