Technical Articles

What is BS EN 45565:2017?

BS EN 45565:2017 is a technical standard that sets the requirements for materials used in the construction and operation of nuclear power plants. It provides guidelines for the selection, qualification, and control of materials to ensure their integrity and performance in the harsh conditions found in nuclear facilities. The standard was developed by the European Committee for Standardization (CEN) and is recognized worldwide as a benchmark for nuclear safety.

Key Features of BS EN 45565:2017

1. Material Selection: The standard defines the criteria for selecting materials that can withstand the extreme temperatures, pressures, and radiation levels encountered in nuclear power plants. Materials must possess high strength, corrosion resistance, and excellent thermal stability to ensure long-term reliability.

2. Qualification Process: BS EN 45565:2017 outlines the procedures for qualifying materials through rigorous testing and evaluation. Material suppliers must provide detailed documentation on their products' composition, properties, and manufacturing processes. These materials undergo experimental testing, including mechanical, chemical, and irradiation tests, to assess their performance under simulated operating conditions.

3. Control Measures: The standard emphasizes the need for strict quality control during material manufacturing, fabrication, and installation. Effective traceability systems must be in place to ensure that materials are properly identified, stored, and handled throughout their lifecycle. Non-destructive examination techniques, such as ultrasonic testing and radiography, are employed to detect any defects or flaws that could compromise material integrity.

The Importance of BS EN 45565:2017

BS EN 45565:2017 plays a vital role in ensuring the safety and reliability of nuclear power plants. By establishing stringent requirements for materials, the standard reduces the risk of structural failures, leaks, and other incidents that could lead to catastrophic consequences. It provides a common reference for designers, operators, and regulators to assess the suitability of materials, enabling consistent safety standards across different nuclear installations.

The standard also encourages continuous improvement in material performance by setting benchmarks and promoting research and development activities. This helps to drive innovation and ensures that the nuclear industry progresses with the latest advancements in materials science and technology.


BS EN 45565:2017 sets the benchmark for the selection, qualification, and control of materials used in nuclear power plants. It places great emphasis on ensuring material integrity and performance under extreme conditions. By adhering to this standard, nuclear facilities can enhance safety, minimize the risk of accidents, and maintain public confidence in the nuclear energy sector.


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