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Abstract
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Article Information:
Modeling and Simulation of Release of Radiation in Flow Blockage Accident for Two Loops PWR
Khurram Mehboob, Cao Xinrong and Majid Ali
Corresponding Author: Khurram Mehboob
Submitted: April 12, 2012
Accepted: April 25, 2012
Published: August 15, 2012 |
Abstract:
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In this study modeling and simulation of release of radiation form two loops PWR has been carried
out for flow blockage accident. For this purpose, a MATLAB based program “Source Term Evaluator for Flow
Blockage Accident” (STEFBA) has been developed, which uses the core inventory as its primary input. The
TMI-2 reactor is considered as the reference plant for this study. For 1100 reactor operation days, the core
inventory has been evaluated under the core design constrains at average reactor power. With the instantaneous
release of radiation to the containment atmosphere, some reliable results have been achieved for determined
states of containment, i.e., Normal, Emergency and Isolation state in this accident situation. Resulting noble
gasses, iodine and aerosol source term variation has been evaluated against the containment performance. The
dependency of the source term on containment performance parameters has been studied. Typical trend of
release of radioactivity has been found corresponding to increase in ventilation exhaust rate values. The
dependency of radioisotopes on ventilation exhaust rate has been studied in accident situation. The removal
dependency of radio iodine and aerosol has also been studied with boric and caustic acid spray in this study.
Key words: Flow blockage accident, iodine, noble gasses, PWR, source term, TMI-2,
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Cite this Reference:
Khurram Mehboob, Cao Xinrong and Majid Ali, . Modeling and Simulation of Release of Radiation in Flow Blockage Accident for Two Loops PWR. Research Journal of Applied Sciences, Engineering and Technology, (16): 2895-2903.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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