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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 />

equalization <strong>in</strong> design‐basis accidents do not result <strong>in</strong> damage to the pressure bear<strong>in</strong>g<br />

structure or to other systems of importance <strong>in</strong> limit<strong>in</strong>g the effects of design‐basis<br />

accidents.<br />

Adequate consideration shall be given to the capability of the <strong>in</strong>ternal structures to<br />

withstand the effects of a severe accident.<br />

Removal of heat from the conta<strong>in</strong>ment<br />

The capability to remove heat from the reactor conta<strong>in</strong>ment shall be ensured. The safety<br />

function shall be fulfilled by reduc<strong>in</strong>g the pressure and temperature <strong>in</strong> the conta<strong>in</strong>ment,<br />

and ma<strong>in</strong>ta<strong>in</strong><strong>in</strong>g both at acceptably low levels after any accidental release of high‐energy<br />

fluids <strong>in</strong> a design‐basis accident. The system perform<strong>in</strong>g the function of remov<strong>in</strong>g heat<br />

from the conta<strong>in</strong>ment shall have adequate reliability and redundancy to ensure that this<br />

can be fulfilled, on the assumption of a s<strong>in</strong>gle failure.<br />

Adequate consideration shall be given to the capability to remove heat from the reactor<br />

conta<strong>in</strong>ment <strong>in</strong> the event of a severe accident.<br />

Control and cleanup of the conta<strong>in</strong>ment atmosphere<br />

Systems to control fission products, hydrogen, oxygen and other substances that may be<br />

released <strong>in</strong>to the reactor conta<strong>in</strong>ment shall be provided.<br />

Systems for clean<strong>in</strong>g up the conta<strong>in</strong>ment atmosphere shall have suitable redundancy <strong>in</strong><br />

components and features to ensure that the safety group can fulfill the necessary safety<br />

function, on the assumption of a s<strong>in</strong>gle failure.<br />

Adequate consideration shall be given to the control of fission products, hydrogen and<br />

other substances that may be generated or released <strong>in</strong> the event of a severe accident.<br />

❙ 260 ❙

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