Biedunkova Olha, Kuznietsov Pavlo, Pinchuk Oleg
National University of Water and Environmental Engineering, 33028 Rivne, Ukraine.
MethodsX. 2025 Jan 9;14:103154. doi: 10.1016/j.mex.2025.103154. eCollection 2025 Jun.
A comprehensive method for the cooling water supply system (CWS) was investigated, which allows for the comprehensive assessment of corrosion, scale formation and biological pollution. Direct and indirect methods were used. Consequently, indirect methods included the calculation of differences in φ and ψ, the Langelier saturation index (LSI), and the Ryznar stability index (RSI), which characterise scale formation and corrosion processes based on the results of the pH, temperature, total dissolved salts, total hardness and total alkalinity measurements were measured using standard methods. Direct methods included bench tests to measure the corrosion rate (V) and scale formation rate (S). Additionally, the colony forming units (CFU) controlling with indication of an yeast and bacteria, the algae cell counts and hydrobox controlling water CWS were carried out. The comprehensive assessment method presented in this article includes adjustments to the existing method to improve its effectiveness, which is used for monitoring of spent fuel storage facilities at a Nuclear Power Plant (NPP).•Introduced a comprehensive methodology combining direct and indirect monitoring for assessing scale formation, corrosion, and biological pollution in nuclear power plant (NPP) cooling water systems.•Enhanced monitoring techniques enable the simultaneous assessment of corrosion resistance and scale formation potential, overcoming limitations of traditional methods.•Incorporated colony-forming unit analysis, algae cell quantification, and hydrobox-based evaluations for a detailed understanding of biofouling.•Validated methodology offers predictive risk modelling and optimised strategies to ensure reliability and safety in NPP operations.
研究了一种用于冷却水供应系统（CWS）的综合方法，该方法可对腐蚀、结垢和生物污染进行综合评估。采用了直接和间接方法。因此，间接方法包括计算φ和ψ的差值、朗格利尔饱和指数（LSI）和雷兹纳稳定指数（RSI），这些指数根据采用标准方法测量的pH值、温度、总溶解盐、总硬度和总碱度的测量结果来表征结垢和腐蚀过程。直接方法包括测量腐蚀速率（V）和结垢速率（S）的台架试验。此外，还进行了控制酵母和细菌指示的菌落形成单位（CFU）、藻类细胞计数以及控制CWS水的水箱试验。本文提出的综合评估方法包括对现有方法的调整以提高其有效性，该方法用于监测核电站（NPP）的乏燃料储存设施。
•引入了一种结合直接和间接监测的综合方法，用于评估核电站（NPP）冷却水系统中的结垢、腐蚀和生物污染。
•增强的监测技术能够同时评估耐腐蚀性和结垢潜力，克服了传统方法的局限性。
•纳入了菌落形成单位分析、藻类细胞定量和基于水箱的评估，以详细了解生物污垢。
•经过验证的方法提供了预测风险模型和优化策略，以确保核电站运行的可靠性和安全性。
