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Standards Development
The aim of the Chemistry Control Performance Indicator (CCPI) is to assess the effectiveness of chemistry control in pressurized water reactor (PWR) nuclear power plants. This evaluation is based on monthly and single fuel cycle scores calculated from the control of core chemistry parameters within the plant. The CCPI aids in evaluating the performance of chemistry control systems and their impact on safeguarding critical assets and ensuring efficient long-term plant operations. It is designed to guide management, operational, engineering and maintenance teams in identifying key areas for improvement. It ensures not only compliance with safety standards but also the maintenance of optimal performance throughout the plant's lifespan through benchmarking. Additionally, the standard outlines a clear methodology for calculating lost scores in each area and tracking these scores either monthly or over a single fuel cycle.
The purpose of the Chemistry Control Performance Indicator (CCPI) is to evaluate the effectiveness of chemical control in pressurized water reactor (PWR) nuclear power plants. This assessment focuses on five key areas related to the control of chemical parameters, including the concentration of various corrosive ions and substances in both the primary and secondary circuits. The CCPI is positioned just below the technical specifications required by regulators, providing a standardized framework for monitoring and scoring chemistry control performance. This framework facilitates periodic evaluations of the plant's operational efficiency in maintaining safe and optimal chemical conditions within its systems. Proper chemical control is vital to preventing corrosion, scaling, and other chemical-related issues that can compromise the integrity of reactor components and overall plant safety. By evaluating chemical control performance across multiple areas, the CCPI aids in identifying areas of concern and enables corrective actions to enhance plant operation and safety. Furthermore, the CCPI provides a structured approach for benchmarking plant performance, ensuring that plants not only meet regulatory standards but also encourage the industry to adopt a risk-informed basis, incorporating operational experience (including best practices) in chemical control, thereby enhancing the long-term reliability and sustainability of nuclear power generation.
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