CANDU Safety #12: Large Loss of Coolant Accident - Canteach

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PHT Pumps Postulated Break Locations 1) Pump Suction 2) Inlet Header 3) Outlet Header Primary Heat Transport System Steam Generators Feeders Reactor/Fuel Channels 24-May-01 CANDU Safety - #12 - Large LOCA.ppt Rev. 0 4
Break in Primary Heat Transport System λ Critical pass is the pass downstream of the break location λ Key of analysis is to stagnate the flow in the channel the channel STEAM GENERATOR PRESSURIZER 24-May-01 CANDU Safety - #12 - Large LOCA.ppt Rev. 0 5 ROH pressure gradient across one core pass reduced BREAK IN REACTOR INLET HEADER RIH REACTOR CORE RIH ROH PUMP OUTLET FEEDER PIPES INLET FEEDER PIPES PHTS.DWG
Page 1 and 2: CANDU Safety #12: Large Loss of Coo
Page 3: Large LOCA with ECC Available λ Ev
Page 7 and 8: Large Break LOCA Safety Analysis λ
Page 9 and 10: Transient Temperatures - Thermalhyd
Page 11 and 12: Depressurization in Inlet Headers (
Page 13 and 14: Break Survey for RIH breaks (Flows)
Page 15 and 16: Single Channel Model for 35% RIH Cr
Page 17 and 18: Detailed Fuel Element Analysis λ O
Page 19 and 20: Detailed Fuel Analysis by ELOCA cod
Page 21 and 22: Temperature ( o C) 1000 900 800 700
Page 23 and 24: Fission Product Release λ The gap
Page 25: Pressure (kPa(g)) Containment Behav

CANDU Safety #12: Large Loss of Coolant Accident - Canteach

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