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2012 (Vol. 4, Issue: 16)
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 

Key words:  Flow blockage accident, iodine, noble gasses, PWR, source term, TMI-2,
Vol. 4 , (16): 2895-2903
Submitted Accepted Published
April 12, 2012 April 25, 2012 August 15, 2012
Abstract:

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.
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  Cite this Reference:
Khurram Mehboob, Cao Xinrong and Majid Ali, 2012. Modeling and Simulation of Release of Radiation in Flow Blockage Accident for Two Loops PWR.  Research Journal of Applied Sciences, Engineering and Technology, 4(16): 2895-2903.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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