Fig. 1. RELAP5 nodalization scheme of V-1 NPP. Fig. 2.1. Reactor - - PDF document

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fig 1 relap5 nodalization scheme of v 1 npp
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Fig. 1. RELAP5 nodalization scheme of V-1 NPP. Fig. 2.1. Reactor - - PDF document

Jan 24, 2023 28 likes •100 views

SVSG1+BRU-A SG1 TIV IV CV TG1 AFW FAV SGIV IV CV FAV IV BRU-K SG2 HPH IV CV FAV SG3 BRU-A FW IV CV FAV SG4 BRU-A HPH SG5 IV CV FAV SG6 IV CV FAV Fig. 1. RELAP5 nodalization scheme of V-1 NPP. Fig. 2.1.

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SLIDE 1

HPH HPH FW AFW FAV SG1 IV CV FAV SG2 IV CV FAV SG3 IV CV SG4 FAV SG5 IV CV FAV SG6 IV CV

FAV SGIV TIV SVSG1+BRU-A BRU-A CV TG1 IV BRU-K IV BRU-A

  • Fig. 1. RELAP5 – nodalization scheme of V-1 NPP.
slide-2
SLIDE 2
  • Fig. 2.4. Pressure in SG 1.

4. 4.2 4.4 4.6 4.8

  • 200
  • 100

100 200 300 400 500 Time [s] Pressure [MPa]

RELAP V1 EBO V1: Trip RCP - model validation. RELAP5-3D

  • Fig. 2.3. Steam production in SG 3.

0. 100. 200. 300. 400. 500. 600.

  • 200
  • 100

100 200 300 400 500 Time [s] Flow [kg/s]

RELAP V1 EBO V1: Trip RCP - model validation. RELAP5-3D

  • Fig. 2.1. Reactor power.

40. 60. 80. 100. 120.

  • 200
  • 100

100 200 300 400 500 Time [s] Power [%]

RELAP V1 EBO V1: Trip RCP - model validation. RELAP5-3D

  • Fig. 2. On – transient level validation of the RELAP5 model.
  • Fig. 2.2. Temperature in hot leg No. 1.

250. 270. 290. 310. 330.

  • 200
  • 100

100 200 300 400 500 Time [s] Temperature [C]

RELAP V1 EBO V1: Trip RCP - model validation. RELAP5-3D

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SLIDE 3

HDV11A-41 HDV12A-4 HDV22A-4 HDV11A-4

HDV

throttling

  • rifice

HDV

HDV12A-41 throttling

  • rifice

measurement

  • rifice

HDV21A-4

HDV

HDV21A-41 throttling

  • rifice

HDV

HDV22A-41 throttling

  • rifice

measurement

  • rifice

8.5 9. 9.5 10. 10.5 11. 11.5 12. 12.5 13. 13.5 5 10 15 20 25 30 35 Flow [kg/s] Pressure [MPa]

HDV11-model HDV11-real

  • Fig. 4. Characteristics of the HP pumps, including discharge line to primary system.
  • Fig. 3. Nodalization of the HP injection.
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SLIDE 4
  • Fig. 5.1. Pressures in primary system and main steam header.

0. 2. 4. 6. 8. 10. 12. 14. 1 2 3 4 5 6 7 8 9 10 Time [hours] Pressure [MPa]

PRZ MSH Bohunice V-1: "feed&bleed" 1 HP pump 1 relieve valve RELAP5/Mod3.2

  • Fig. 5.2. Collapsed water level in reactor vessel and PRZ.

0. 2. 4. 6. 8. 10. 12. 14. 1 2 3 4 5 6 7 8 9 10 Time [hours] Level [m]

PRZ reactor Bohunice V-1: "feed&bleed" 1 HP pump 1 relieve valve RELAP5/Mod3.2

slide-5
SLIDE 5
  • Fig. 5.3. Temperatures in reactor vessel.

150. 200. 250. 300. 350. 400. 1 2 3 4 5 6 7 8 9 10 Time [hours] Temperature [°C]

inlet

  • utlet

saturation Bohunice V-1: "feed&bleed" 1 HP pump 1 relieve valve RELAP5/Mod3.2

  • Fig. 5.4. Maximum fuel and cladding temperature.

0. 200. 400. 600. 800. 1000. 1 2 3 4 5 6 7 8 9 10 Time [hours] Temperature [°C]

fuel cladding Bohunice V-1: "feed&bleed" 1 HP pump 1 relieve valve RELAP5/Mod3.2

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SLIDE 6
  • Fig. 5.5. Loop mass-flow-rates.

0. 100. 200. 300. 400. 500. 1 2 3 4 5 6 7 8 9 10 Time [hours] Flow [kg/s]

loop 1 loop 2 loop 3 loop 4 loop 5 loop 6 Bohunice V-1: "feed&bleed" 1 HP pump 1 relieve valve RELAP5/Mod3.2

  • Fig. 5.6. Mass-flow-rate through PRZ relieve valve.

0. 20. 40. 60. 80. 100. 1 2 3 4 5 6 7 8 9 10 Time [hours] Flow [kg/s]

relieve valve HP pump Bohunice V-1: "feed&bleed" 1 HP pump 1 relieve valve RELAP5/Mod3.2

slide-7
SLIDE 7
  • Fig. 5.8. Collapsed water level in SGs.

0. 0.5 1. 1.5 2. 2.5 1 2 3 4 5 6 7 8 9 10 Time [hours] Level [m]

SG1 SG2 SG3 SG4 SG5 SG6 Bohunice V-1: "feed&bleed" 1 HP pump 1 relieve valve RELAP5/Mod3.2

  • Fig. 5.7. Primary and secondary water mass inventories.

0. 50. 100. 150. 200. 250. 1 2 3 4 5 6 7 8 9 10 Time [hours] Mass [t]

primary secondary Bohunice V-1: "feed&bleed" 1 HP pump 1 relieve valve RELAP5/Mod3.2