Overview
IEC 62988:2018 is an international standard published by the International Electrotechnical Commission (IEC) that addresses the selection and use of wireless devices in instrumentation and control (I&C) systems important to safety in nuclear power plants (NPPs). This standard applies to both new NPP installations and backfitting in existing plants, focusing on ensuring the reliability, safety, and performance of wireless technologies used in critical safety functions.
The document emphasizes practical requirements for wireless systems performing category C safety functions under IEC 61226 and explicitly excludes wireless use in category A and B systems. IEC 62988:2018 provides guidance for fixed and mobile wireless devices handling all data types, including voice and process data, which are integral to safety-classified functions within nuclear I&C environments.
Key Topics
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Safety Classification and Physical Separation
The standard defines safety classification levels for wireless components and mandates physical separation and isolation to mitigate interference and failures.
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Cybersecurity for Wireless Systems
IEC 62988 defines wireless-specific cybersecurity requirements, including data logging, connection controls, network surveillance, and site topology considerations to secure wireless communications against cyber threats.
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System Requirements and Network Architecture
Wireless application requirements cover network performance, architecture design, surveillance, monitoring, and power supply considerations to maintain system integrity.
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Device Selection and Qualification
Strict criteria are set for selecting wireless devices based on evidence of correctness, quality assurance, functional suitability, integration, and self-monitoring capabilities. Hardware and software qualification processes ensure devices meet nuclear safety standards.
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Electromagnetic Compatibility and Radio Emissions
The standard requires control of electromagnetic interference through compliance with electromagnetic compatibility (EMC) requirements, radio coverage optimization, and spectrum management to maintain safe and interference-free wireless operation.
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Documentation and Compliance
Comprehensive documentation and traceability are mandated to support system verification, audits, and regulatory compliance in nuclear safety contexts.
Applications
IEC 62988:2018 is essential for utility operators, systems evaluators, licensors, and engineering teams involved in the design, implementation, and operation of nuclear power plant instrumentation and control systems. Its guidelines apply specifically to:
- Integration of wireless devices in Instrumentation and Control Systems important to safety that perform category C functions.
- Modernization projects or backfits where wireless technologies are introduced into existing nuclear plants.
- Ensuring the cybersecurity and electromagnetic security of wireless communications in critical safety environments.
- Compliance management during qualification and testing of wireless device hardware and software within nuclear facilities.
- Supporting operations where wireless communications handle process data, voice communication, and monitoring with safety classification.
This standard ensures that NPPs can safely leverage wireless technologies while maintaining stringent nuclear safety and operational integrity requirements.
Related Standards
IEC 62988:2018 operates within the broader IEC SC 45A framework, complementing and connecting to other important standards such as:
- IEC 61513: General requirements for instrumentation and control systems important to safety in NPPs.
- IEC 63046: Requirements for electrical power systems supplying instrumentation and control in NPPs.
- IEC 61226: Categorization of safety functions and classification of systems in nuclear power plants.
- Related IEC SC 45A standards addressing cybersecurity, electromagnetic compatibility, software and hardware qualification, and defense against common cause failures.
Compliance with IEC 62988 should be viewed alongside these standards to ensure a comprehensive approach to nuclear plant safety and security when integrating wireless devices.
Keywords: IEC 62988, nuclear power plants, wireless devices, instrumentation and control, safety systems, cybersecurity, electromagnetic compatibility, wireless network architecture, device qualification, IEC standards, nuclear safety, instrumentation, control system backfit