The Accident Diagnostic, Analysis and Management (ADAM) computer code has been developed as a tool for on-line applications to accident diagnostics, simulation, management and training. ADAM’s severe accident simulation capabilities incorporate a balance of mechanistic, phenomenologically based models with simple parametric approaches for elements including (but not limited to) thermal hydraulics; heat transfer; fuel heatup, meltdown, and relocation; fission product release and transport; combustible gas generation and combustion; and core-concrete interaction. The overall model is defined by a relatively coarse spatial nodalization of the reactor coolant and containment systems and is advanced explicitly in time. The result is to enable much faster than real time (i.e., 100 to 1000 times faster than real time on a personal computer) applications to on-line investigations and/or accident management training. Other features of the simulation module include provision for activation of water injection, including the Engineered Safety Features, as well as other mechanisms for the assessment of accident management and recovery strategies and the evaluation of PSA success criteria. The accident diagnostics module of ADAM uses on-line access to selected plant parameters (as measured by plant sensors) to compute the thermodynamic state of the plant, and to predict various margins to safety (e.g., times to pressure vessel saturation and steam generator dryout). Rule-based logic is employed to classify the measured data as belonging to one of a number of likely scenarios based on symptoms, and a number of “alarms” are generated to signal the state of the reactor and containment. This paper will address the features and limitations of ADAM with particular focus on accident simulation and management.
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10th International Conference on Nuclear Engineering
April 14–18, 2002
Arlington, Virginia, USA
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
0-7918-3596-0
PROCEEDINGS PAPER
ADAM: An Accident Diagnostic, Analysis and Management System — Applications to Severe Accident Simulation and Management
M. J. Zavisca,
M. J. Zavisca
Energy Research, Inc., Rockville, MD
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M. Khatib-Rahbar,
M. Khatib-Rahbar
Energy Research, Inc., Rockville, MD
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H. Esmaili,
H. Esmaili
Energy Research, Inc., Rockville, MD
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R. Schulz
R. Schulz
Swiss Federal Nuclear Safety Inspectorate, Villigen, Switzerland
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M. J. Zavisca
Energy Research, Inc., Rockville, MD
M. Khatib-Rahbar
Energy Research, Inc., Rockville, MD
H. Esmaili
Energy Research, Inc., Rockville, MD
R. Schulz
Swiss Federal Nuclear Safety Inspectorate, Villigen, Switzerland
Paper No:
ICONE10-22195, pp. 131-136; 6 pages
Published Online:
March 4, 2009
Citation
Zavisca, MJ, Khatib-Rahbar, M, Esmaili, H, & Schulz, R. "ADAM: An Accident Diagnostic, Analysis and Management System — Applications to Severe Accident Simulation and Management." Proceedings of the 10th International Conference on Nuclear Engineering. 10th International Conference on Nuclear Engineering, Volume 2. Arlington, Virginia, USA. April 14–18, 2002. pp. 131-136. ASME. https://doi.org/10.1115/ICONE10-22195
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