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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 />

Unauthorized access to, or <strong>in</strong>terference for any reason with, structures, systems and<br />

components important to safety shall be prevented.<br />

Interactions of systems<br />

If there is a significant probability that it will be necessary for systems important to safety<br />

to operate simultaneously, their possible <strong>in</strong>teraction shall be evaluated. In the analysis,<br />

account shall be taken not only of physical <strong>in</strong>terconnections, but also of the possible<br />

effects of one system’s operation, mal‐operation or failure on the physical environment of<br />

other essential systems, <strong>in</strong> order to ensure that changes <strong>in</strong> the environment do not affect<br />

the reliability of system components <strong>in</strong> function<strong>in</strong>g as <strong>in</strong>tended.<br />

Interactions between the electrical power grid and the plant<br />

In the design of the plant, account shall be taken of power grid‐plant <strong>in</strong>teractions,<br />

<strong>in</strong>clud<strong>in</strong>g the <strong>in</strong>dependence of, and number of, power supply l<strong>in</strong>es to the plant <strong>in</strong> relation<br />

to the necessary reliability of the power supply to plant systems important to safety.<br />

Decommission<strong>in</strong>g<br />

At the design stage, special consideration shall be given to the <strong>in</strong>corporation of features<br />

that will facilitate the decommission<strong>in</strong>g and dismantl<strong>in</strong>g of the plant.<br />

4.1.4.9. Safety analysis<br />

A safety analysis of the plant design shall be conducted <strong>in</strong> which methods of both<br />

determ<strong>in</strong>istic and probabilistic analysis shall be applied. On the basis of this analysis, the<br />

design basis for items important to safety shall be established and confirmed. It shall also<br />

be demonstrated that the plant as designed is capable of meet<strong>in</strong>g the prescribed and<br />

acceptable limits for potential radiation doses and radioactive releases for each category<br />

of plant conditions, and that defence <strong>in</strong> depth has been achieved.<br />

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