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Evaluation of Corrosion Product Activity in a Typical PWR with Extended Cycles and Flow Rate Perturbations
Department of Physics, Air University, Islamabad, Pakistan
Department of Physics & Applied Mathematics, Pakistan Institute of Engineering & Applied Sciences, Islamabad, Pakistan
Department of Physics & Applied Mathematics, Pakistan Institute of Engineering & Applied Sciences, Islamabad, Pakistan
- 1 Department of Physics, Air University, Islamabad, Pakistan
- 2 Department of Physics & Applied Mathematics, Pakistan Institute of Engineering & Applied Sciences, Islamabad, Pakistan
- 3 Department of Physics & Applied Mathematics, Pakistan Institute of Engineering & Applied Sciences, Islamabad, Pakistan
World Journal of Nuclear Science and Technology·Volume 07 (2016)·Pages 24–34·Published 16 December 2016·DOI10.4236/wjnst.2017.71003
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Abstract
Effect of flow rate perturbations has been studied using the modified computer program CPAIR-P for time dependent corrosion rates in Pressurized Water Reactors (PWRs) having extended cycles. In these simulations, a decrease in the corresponding saturation values of corrosion product activity (CPA) is observed for higher pH values. Comparison of CPA’s behavior has been done for constant flow-rate case as well as for transients with elevated 10 B levels (~40%) in dissolved boric acid in coolant in two operating cycles. When the flow rate is decreased in the first cycle, the saturation value of CPA attains new higher values. Also, in the second operating cycle, the saturation values are about 12% higher when compared with the values in the first cycle.
KeywordsPWRsCorrosion ProductsEnriched Boric AcidExtended CyclesFlow Rate Perturbations
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