Civil Engineering Reference
In-Depth Information
Fig. 5.17
Emergency core cooling systems of AP1000 [
36
]
low-pressure emergency core cooling systems (Kraftwerk Union PWR) provided
their power supply is available.
As described already in Sect.
3.1
the emergency cooling systems of other
modern PWRs (AP1000, US-APWR, EPR) are slightly different. The collected
sump water in KWU-PWRs is replaced by the large water volume of the IWRST in
AP1000, US-APWR and EPR. This is shown in Fig.
5.17
for the case of AP1000.
The high pressure core flooding system and the accumulators are also installed in
the AP1000. The automatic depressurization system (ADS) allows depressurizing
the primary coolant system directly into the IWRST in AP1000, US-APWR and
EPR (In the older KWU-PWRs this is achieved by accident management
measures).
