Thermalhydraulic Safety Characteristics Of CANDU ... - Canteach

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Pressure and Inventory ControlλλConsists of:– pressurizer– bleed condenser– feed pumps– feed and bleedvalves– storage tankFunctions:– pressure andinventory controlfor each PHTloopBleed ValvesBleed CondenserReactor HeadersPressurizerFeed Pumps24-May-01 CANDU safety - #4 - Thermalhydraulics.ppt Rev. 0 20
λλλλλλSome Requirements of Pressure & InventoryControlTo accommodate the PHT coolant swell (cool water to hotwater) and shrink (hot water to cool water) associated withwarm-up, cooldown and power maneuvering (feed and bleedsystem)Provide relief for over-pressure protection of PHT system(liquid relief valves) and contain the relief from PHT (bleedcondenser)Control the PHT system pressure (by pressurizer or feed andbleed system)Minimize rapid pressure reduction in PHT system for accidentscenarios and prevent PHT pump suction pressure fromdropping to a value that would cause PHT pump cavitationIsolate loops following LOCAProvide a low-level level trip signal to the reactor shutdown system24-May-01 CANDU safety - #4 - Thermalhydraulics.ppt Rev. 0 21
Page 1 and 2: CANDU Safety #4:Thermalhydraulic Sa
Page 3 and 4: λλλλλλλPrimary Heat Transpor
Page 5 and 6: Some Safety Requirements of the PHT
Page 10: PHT Pump & MotorSpecificationsλ Pu
Page 13 and 14: SpecificationsλλHeadersInlet Head
Page 15: Loop Isolation for LOCA eventsλλ
Page 18 and 19: Some Safety Requirements of ECCλλ
Page 22 and 23: CANDU Fuel Channelλλλλλ380 hor

Thermalhydraulic Safety Characteristics Of CANDU ... - Canteach

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