Novel Methodologies for Modeling the Net Fission-Poison Reactivity Transients to Accurately Predict Criticals and Hot-Startup ECPs for the MURR Core
| Autor: | K. Kutikkad, N. J. Peters |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Nuclear and High Energy Physics
Fission Computer science 020209 energy Computation Nuclear engineering Control rod Nuclear data 02 engineering and technology Condensed Matter Physics Nuclear Energy and Engineering Criticality Core (graph theory) 0202 electrical engineering electronic engineering information engineering Research reactor Transient response |
| Zdroj: | Nuclear Technology. 201:80-98 |
| ISSN: | 1943-7471 0029-5450 |
| DOI: | 10.1080/00295450.2017.1398582 |
| Popis: | The details of robust computational and novel semiempirical methodologies that were developed and tested at the University of Missouri Research Reactor (MURR) to accurately determine the possibility of a “hot” startup and the estimated critical position (ECP) of the control rods following an unplanned shutdown are presented. The computations, based on a modified coupled MCNP5-ORIGEN2 code system and using ENDF/B-VII.0 and TENDL-2013 nuclear data sets, accurately simulate the MURR core operational histories while predicting the critical rod positions within ±0.001 Δk/k of experimental critical data. In this study, using the coupled MCNP5-ORIGEN2 computations, various core-specific parameters were methodically characterized and were adapted into a semiempirical formulation better suited for practical reactor operations. The predictive capabilities of these novel semiempirical approaches regarding core criticality and ECPs required utilizing, for the first time, the net transient response of the nega... |
| Databáze: | OpenAIRE |
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