ACR Workshop -Core Design & Reactor Physics- - NRC

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Physics Innovations to achieve slightly negative CVR ( H 2O Coolant) Large Moderator/Fuel ratio (Vm/Vf) means high CVR Current Lattice Pitch ( LP) 28.575 cm ( 11.25 inches ) Vm/Vf =16.4 CVR = + 60 mk Target CVR = -3 mk requires Vm/Vf < 6.0, 0 LP < 20 cm (7.87 inches) Minimum LP = 22 cm ( 8.66 inches) required to provide space for feeders between channels Vm/Vf = 8.4 Use larger CT, OR =7.8 cm (3.07 inches) to displace more moderator Vm/Vf = 7.1 Add Dy (4.6% ) to central NU pin CVR = - 3 mk Pg 16
Comparison of CANDU 6 and ACR Lattices CANDU 6 Lattice ACR Lattice Pg 17
Page 1 and 2: ACR Workshop -Core Design & Reactor
Page 3 and 4: Fuel Temperature effect Reactivity
Page 5 and 6: ACR-700 Reactor Control & Safety Sy
Page 7 and 8: End-View of ACR-700 Pg 7
Page 9 and 10: Safety Parameters in ACR-700 and CA
Page 11 and 12: Coolant CANDU 6 (D 2 O ) ACR (H 2
Page 13 and 14: Effects of CANFLEX SEU Fuel in ACR
Page 15: Effect of Coolant Void in ACR ACR
Page 19 and 20: Effect of Trip Time & CVR on LOCA T
Page 21 and 22: Relative Power 1.1 1 0.9 0.8 0.7 0.
Page 23 and 24: Thermal Flux ( 10E14 ) 4 3.5 3 2.5
Page 25 and 26: Thermal Flux Profile upon LOCA at t
Page 27 and 28: Thermal Flux Profile upon LOCA at t
Page 29 and 30: Thermal Flux Ratios in ACR-700 upon
Page 31: Pg 31

ACR Workshop -Core Design & Reactor Physics- - NRC

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