Sub-Criticality Measurement with Source Term for Research Reactor in Inverse Kinetics Method
| Autor: | S. M. Seo, M. Q. Huda, M. M. Rahman, N. Jahan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
010308 nuclear & particles physics 020209 energy Nuclear engineering 02 engineering and technology Nuclear reactor 01 natural sciences Void coefficient law.invention Power (physics) Term (time) Criticality law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Neutron source Research reactor Neutron |
| Zdroj: | World Journal of Nuclear Science and Technology. :129-135 |
| ISSN: | 2161-6809 2161-6795 |
| DOI: | 10.4236/wjnst.2017.73011 |
| Popis: | In reactor physics tests, it is important to monitor sub-criticality continuously during criticality approach. Reactivity measurements by the inverse kinetics method are widely used during the operation of a nuclear reactor. This technique is successfully applied at sufficiently high power level or to a core without an external neutron source where the neutron source term in point reactor kinetics equations may be neglected. For operation at low power levels or in the sub-critical domain, the increase in the fluctuation of the neutron signal may cause difficulties in the evaluation of reactivity and the effect of direct emission from the external neutron source may not be neglected. Therefore, contribution of the neutron source must be taken into account and this implies knowledge of a quantity proportional to the source strength, which calls the source term and then it should be determined. The research work has been conducted to measure reactivity with source term using a dedicated reactivity measurement system by the Least Square Inverse Kinetics Method (LSIKM). Application to a simulator of HANARO research reactor, Korea Atomic Energy Research Institute (KAERI), with known source strength and reactivity worth has showed consistent and satisfactory agreement. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|