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Generic VVER 1000 MWe. Loss of Feedwater at Full Power Loos of ofsite power – assumed Emergency FW 3&4 – disabled Steam bypass to condenser ( BRU -K ) – disabled. Initial conditins (steady-state). Reactor thermal power 3119 MW RPV pressure 15.3 9 M P a

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Generic vver 1000 mwe

Generic VVER 1000 MWe

Loss of Feedwater at Full Power

Loos of ofsite power – assumed

Emergency FW 3&4 – disabled

Steambypass

to condenser (BRU-K) – disabled


Initial conditins steady state
Initial conditins (steady-state)

  • Reactor thermal power 3119 MW

  • RPVpressure 15.39 MPa

  • RPV coolant in/out temp. 291.6 / 324.6 degC

  • MCP flow 4147 kg/sec / loop

  • Feedwater flow 424.5 kg/sec / SG

  • Feedwater temp. 220 degC

  • Steam press. (sg dome) 6.145 MPa

  • SG water level 2.12 m

  • Pressurizer water level 8.88 m






Nodalization diagram – Secondary System








Plots for the short time range 0 1000 sec time of the fw loss 100 sec
Plots for the short time range0 – 1000 secTime of the FW loss: 100 sec


Plots for the long time range 0 3600 sec time of the fw loss 100 sec
Plots for the long time range0 – 3600 secTime of the FW loss: 100 sec


Final state


Final state


Final state


Final state


Final state


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