Computing method of absolute neutron flux spectrum of refrigerant in reactor core active section
A calculation method and coolant technology, which are applied in the calculation field of reactor neutron flux spectrum, can solve problems such as insufficient meeting accuracy requirements, and achieve the effect of improving calculation accuracy
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[0028] The present invention will be described in detail below with reference to the drawings and embodiments.
[0029] Take the absolute neutron flux spectrum of the coolant provided by the ACP1000 unit for the calculation of the source term as an example. There are 177 components in the core of this unit. First, the calculation of the core program is performed. From the calculation result of the core calculation program, the absolute value of the two groups of neutron flux in a certain equilibrium cycle life can be known. At this time, the boron concentration in the core Conditions such as the density and temperature of the coolant, the temperature of the fuel, and the nuclide density of the component under a certain burnup are also known. The Monte Carlo program is used to simulate the core for three-dimensional calculations. The calculation can be performed by simulating the entire core composed of 177 components, or a relatively simplified fuel assembly model can be used for...
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