Accounting of boron‐10 content changes in boric acid during fuel burnup in reactor VVER‐1000

M. Sumarokov (Mr), NRC Kurchatov Institute

26th Symposium of AER on VVER Reactor Physics and Reactor Safety (2016, Helsinki, Finland)
Advances in spectral and core calculation methods


ACCOUNTING OF BORON-10 CONTENT CHANGES IN BORIC ACID DURING FUEL BURNUP IN REACTOR VVER-1000Bychkova N.A., Lazarenko A.P., Pavlovichev A.M., Sumarokov M.A., Tomilov M.Y. National Research Centre “Kurchatov Institute”ABSTRACTThe implementation in the complex KASKAD the algorithm of taking into account of changes boron-10 content in boric acid during the fuel burnup calculation in the reactor VVER-1000 is described. Influences of boron-10 depletion and main processes of water exchange on boric acid critical concentration are demonstrated. It is shown that the inclusion of boron-10 depletion improves the agreement between measured and calculated values of boric acid critical concentration in the coolant during operation of the fuel cycle.26th Symposium of AER on VVER Reactor Physics and Reactor Safety 4 10 – 14 October 2016, Helsinki, Finland

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