CONTRIBUTION OF THE NUMBER OF MEASURED DATA TO CALCULATION UNCERTAINTY IN THE WORTH OF VVER CONTROL RODS
22nd Symposium of AER on VVER Reactor Physics and Reactor Safety (2012, Průhonice, Czech Republic)
ENGINEERING FACTORS
Abstract
In the design of VVER core loadings, the important parameters that characterise
reactor safety are the effectiveness of emergency protection and the worth of control rods. The
calculation uncertainties of those functionals are also important for the design. The paper
discusses the methods of accounting the uncertainties by comparing calculated and measured
data. The paper proves that the deviations between BIPR-7 calculated data and measured
data are distributed in accordance with close to normal law, while the parameters of
distribution (such as mean and standard deviations), which were determined for the available
comparison samples, are practically identical to those determined for the applicable general
samples.