IEC 62645:2019

IEC 62645:2019 provides the primary technical reference for cybersecurity requirements in nuclear power plants, specifically for instrumentation, control and electrical power systems. For engineering, procurement, and compliance teams, it helps define how cyber risk should be addressed when evaluating critical plant systems and associated documentation. IEC 62645:2019 is especially relevant where technical assessment, verification activities, and controlled configuration are needed to support safe and consistent operation.

IEC 62645:2019 standard overview

This edition focuses on cybersecurity requirements that apply to nuclear plant instrumentation, control, and electrical power systems. Its scope is oriented toward protecting essential digital and electrical assets from threats that could affect operational integrity or safety-related functions. In practice, it is used as a compliance reference during technical review, engineering documentation development, and documented evaluation of system security measures. The standard supports structured alignment between cybersecurity controls and the operational requirements of nuclear facilities.

Applications of IEC 62645:2019

IEC 62645:2019 is typically used in the design, assessment, and lifecycle management of nuclear power plant systems where digital control and electrical power infrastructure must be protected against cyber risks. It may support vendor qualification, specification review, security analysis, and testing workflows for control-room-related equipment, plant automation assets, and supporting electrical systems. Laboratories, utilities, and integrators often rely on it during product evaluation, technical validation, and conformity assessment preparation for critical plant environments.

Why IEC 62645:2019 matters

For nuclear facilities, cybersecurity weaknesses can create safety, reliability, and operational continuity concerns. IEC 62645:2019 helps organizations apply a consistent framework for risk management and quality assurance across instrumentation, control, and electrical power systems. It also supports procurement decisions by giving buyers a defined basis for technical compliance review and supplier documentation checks. Used effectively, it improves testing consistency, reduces ambiguity in engineering specifications, and strengthens preparation for regulatory and conformity assessment activities.

• Cybersecurity requirements for nuclear power plant instrumentation, control, and electrical power systems
• Useful for technical review, supplier evaluation, and engineering documentation control
• Supports risk management, verification activities, and compliance workflows
• Relevant to operational security planning and conformity assessment preparation
• Edition 2 technical reference for structured assessment of plant cyber protections