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Regional Basic Professional Training Course in Korea

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SG<br />

Conta<strong>in</strong>ment<br />

RCP RCP<br />

RCP<br />

SIT<br />

SIT<br />

RV<br />

Sump<br />

SIT<br />

SIT<br />

RCP<br />

SG<br />

❙ 515 ❙<br />

8-B. Determ<strong>in</strong>istic Accident Analysis (LOCA)<br />

LPSIP<br />

#1<br />

#1<br />

#2<br />

HPSIP<br />

#2<br />

LPSIP<br />

RWST<br />

SIT: Safety Injection Tank<br />

SIP: Safety Injection Pump<br />

Figure 8.7‐3 Schematic diagram of ECCS for KSNP<br />

To satisfy the ECCS performance criteria, the follow<strong>in</strong>g design bases are applied;<br />

• The shutoff head and flow rates of the high pressure safety <strong>in</strong>jection (HPSI) pump<br />

and low pressure safety <strong>in</strong>jection (LPSI) pump were selected to <strong>in</strong>sure that<br />

adequate flow is delivered to the RCS<br />

• Storage of fluid for the SIS is accomplished by the RWT conta<strong>in</strong>s a sufficient<br />

amount of borated water<br />

• The SIS is designed such that approximately equal flows are delivered to each<br />

<strong>in</strong>jection po<strong>in</strong>t, regardless of break location<br />

• The safety function of the ECCS can be accomplished assum<strong>in</strong>g the failure of a s<strong>in</strong>gle<br />

active component dur<strong>in</strong>g the <strong>in</strong>jection mode of operation, or a s<strong>in</strong>gle active or<br />

limited‐leakage passive failure of a component dur<strong>in</strong>g the recirculation of operation

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