Evaluation of Corrosion Product Activity in a Typical PWR with Extended Cycles and Flow Rate Perturbations

Rubina Nasir; Sikander M. Mirza; Nasir M. Mirza

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Evaluation of Corrosion Product Activity in a Typical PWR with Extended Cycles and Flow Rate Perturbations

机译：评估具有延长周期和流量扰动的典型压水堆中腐蚀产物的活性

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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.

机译：使用改进的计算机程序CPAIR-P研究了循环扰动对压水反应堆（PWR）中随时间变化的腐蚀速率的影响。在这些模拟中，对于较高的pH值，观察到腐蚀产物活性（CPA）的相应饱和度值减小。比较了CPA在恒定流量情况下以及在两个操作周期中溶解的硼酸在冷却液中的10B含量升高（约40％）时的瞬态现象。在第一个循环中降低流量时，CPA的饱和度值将达到新的更高值。而且，在第二操作循环中，与第一循环中的饱和度值相比，饱和度值高约12％。

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《World Journal of Nuclear Science and Technology》 |2017年第1期|共11页
作者
Rubina Nasir; Sikander M. Mirza; Nasir M. Mirza;
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中图分类物理学;
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3. Kinetic study of corrosion product activity in primary coolant pipes of a typical PWR under flow rate transients and linearly increasing corrosion rates [J] . Rafique M, Mirza NM, Mirza SM Journal of Nuclear Materials: Materials Aspects of Fission and Fusion . 2005,第2a3期

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Evaluation of Corrosion Product Activity in a Typical PWR with Extended Cycles and Flow Rate Perturbations

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