Estimation of control rods worth for WWR-S research reactor using WIMS-D4 and CITATION codes

الملخص EN

An accurate estimation of the integral and differential worth of the control rods utilized in WWR-S research reactor is the main objective of the present study.

The control rods were installed in nuclear reactors to provide precise and adjustable control of reactivity.

WWR-S research reactor is controlled by nine control rods serving as shim, regulation and safety rods.

Calculation of the reactivity worth of control rods in a reactor core constitutes an important factor of nuclear reactor design.

In this study, the reactivity worth of the control rods is theoretically assessed using the neutronic codes; WIMS-D4 and CITATION for lattice cell and core simulation, in addition to the detailed Monte-Carlo simulation code MCNPX.

The obtained results from WIMS-D4 and CITATION codes are compared with the corresponding measurements.

A comparison with MCNPX evaluation of control rod worth for more validation is also presented.