Author(s)

Rubina Nasir¹, Sikander M. Mirza², Nasir M. Mirza^2*

¹Department of Physics, Air University, Islamabad, Pakistan.
²Department of Physics & Applied Mathematics, Pakistan Institute of Engineering & Applied Sciences, Islamabad, Pakistan.

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 ¹⁰B 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.

PWRs, Corrosion Products, Enriched Boric Acid, Extended Cycles, Flow Rate Perturbations

Nasir, R. , Mirza, S. and Mirza, N. (2017) Evaluation of Corrosion Product Activity in a Typical PWR with Extended Cycles and Flow Rate Perturbations. World Journal of Nuclear Science and Technology, 7, 24-34. doi: 10.4236/wjnst.2017.71003.