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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 />

3.1.2. Abnormal Operation<br />

Reactor Coolant Pump Trip (Malfunction 3.1)<br />

At 100% reactor power, turn off one RCP (Reactor Coolant Pump) accord<strong>in</strong>g to the<br />

follow<strong>in</strong>g procedure and then control the NPP <strong>in</strong> a stable state;<br />

Procedure of RCP trip<br />

‐ Select [Simulation] from Ma<strong>in</strong> menu.<br />

‐ Select 3.1 item of [Malfunction] from Submenu of Mimic.<br />

The estimated NPP trend after one Reactor Coolant Pump trip is shown <strong>in</strong> [Table 3.2].<br />

[Table 3.2] NPP Status after one RCP trip<br />

Estimated time Description of event Results<br />

0: 0:10<br />

0: 0:10<br />

0: 0:10<br />

0: 0:10<br />

0: 0:10<br />

0: 0:10<br />

0: 0:11<br />

0: 0:14<br />

0: 0:15<br />

0: 1:03<br />

0: 1:57<br />

[Malfunction 3.1] Reactor Coolant Pumps : trip<br />

RCP no.1<br />

RCP 1A Turn off<br />

Reactor scrammed<br />

Reactor trip by Local Power Density High<br />

Reactor trip by DNBR Low<br />

Turb<strong>in</strong>e Trip occurred<br />

Electrical Fault occurred<br />

Steam Bypass Valve Opened<br />

Reactor trip by Rx Coolant Flow<br />

to SG1 Low<br />

Steam Bypass Valve Closed<br />

Steam Bypass Valve Opened<br />

❙ 1168 ❙

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