Thermalhydraulic Safety Characteristics Of CANDU ... - Canteach

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Figure 8 layoutλλλλλλCirculation in Primary Heat Transport SystemFlow from inlet header-1through core to outletheader-1Then through steamgenerator-1 1 to pump-1Then to inlet header-2on the other side ofreactor faceBack through the coreto the outlet header-2Then through the steamgenerator-2 2 to pump-2This constitutes onecomplete pass in one ofthe loops24-May-01 CANDU safety - #4 - Thermalhydraulics.ppt Rev. 0 4
Some Safety Requirements of the PHTλλλλλIn the event where the PHT system boundary fails, must limitthe fuel damage to satisfy dose limits, in conjunction with themitigating systems such as reactor shutdown: SDS1, SDS2;and emergency core cooling systemPromote decay heat removal by natural circulation(thermosyphoning) after the total loss of PHT pumping powerProvide a rotational inertia to each PHT pump so that coolantflow prevents overheating of the fuel, if power is lost to thepump motorProvide process measurements for tripping and shutting downthe reactor to ensure that system pressure is within allowablelimitsProvide process measurements for detecting LOCA’s and theinitiation of ECC injection into the core24-May-01 CANDU safety - #4 - Thermalhydraulics.ppt Rev. 0 5
Page 1 and 2: CANDU Safety #4:Thermalhydraulic Sa
Page 3: λλλλλλλPrimary Heat Transpor
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 20 and 21: Pressure and Inventory ControlλλC
Page 22 and 23: CANDU Fuel Channelλλλλλ380 hor

Thermalhydraulic Safety Characteristics Of CANDU ... - Canteach

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