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Nuclear Reactor Experiment

Nuclear Reactor Experiment

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Nuclear Reactor Experiment

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  1. Nuclear Reactor Experiment RHRS Analysis Group E 2003. 6.14

  2. About Members… 97409-005 Kwon Tae-yung 97409-012 Nam Jeong-woo 97409-019 Song Ku-kwon 97409-029 Lee Jeon-kyu 97409-044 Han Man-ghil 97409-045 Han Hyun-sun

  3. Introduction • What to do…? • 1. RHRS Accident Analysis • 2. Derive a Conclusion from given data • How to do…? • 1. Mal functioned CNS • 2. Compare Mal functioned data with the Stable state

  4. RHRS - Residual Heat Removal System • : functions to remove heat from the core and reactor coolant system during plant cool down and refueling operations

  5. RHRS - Residual Heat Removal System • - supplies initial reactor coolant system circulation and purification during a plant startup • - serves as part of the Emergency Core Cooling System (ECCS)

  6. System Drawing

  7. System Drawing

  8. The points that we concerned . ▶ What is the role of RHRS in 100% power ? ▶ How we can know the role of RHRS ?

  9. Mal function .

  10. Variables .

  11. Analysis . ▶ Plot the data ▶Compare each other ETC . ▶ Running time : 1500 sec

  12. Malfunction

  13. Reactor vessel water level [m] Time(s)

  14. Loop 1,2,3 average Temperature(mean value) Time(s)

  15. Pressurizer pressure Time(s)

  16. PRZ water level[m] Time(s)

  17. Malfunction(Complex case)

  18. Pressurizer water level [m] Time(s)

  19. Vessel water level [m] Time(s)

  20. Loop 1,2,3 average Temperature(mean value) [ºC] Time(s)

  21. Analysis ▶ Does complex mal function affect the other system? ▶ Is these data reliable?

  22. Discussion Conclusion ▶RHR system is outside of containment ▶Although abnormal RHRS state is happened, the containment condition does not change. ▶The small derivation was due to the unstability of CNS code.

  23. Discussion Another situation ▶ If the reactor is in the state of ECC…

  24. Discussion Another situation ▶ If the reactor is in the state of refueling…

  25. The End Thanks for listening