IEC TR 63123:2017

Overview

IEC TR 63123:2017 is an IEC Technical Report that provides guidance for applying IEC 63147:2017 / IEEE Std 497™-2016 within the IAEA / IEC framework. As an informative (non‑normative) document produced by IEC SC 45A, it explains the background, scope and practical considerations for adopting IEEE 497:2016 as IEC 63147 without modification, with particular attention to nuclear power plant instrumentation, control and electrical power systems involved in accident monitoring.

Key topics

• Guidance for application: Explains how IEC 63147/IEEE 497 interfaces with existing IAEA and IEC safety requirements and how it should be interpreted within the IEC/IAEA context.
• Standards mapping: Includes discussion and a mapping table relating variable types and monitoring functions to the draft edition of IEC 61226, supporting consistent function categorization.
• Standards integration: Describes the document’s place in the SC 45A standards hierarchy (fourth-level Technical Report) and its relationship to higher-level lifecycle standards such as IEC 61513 and IEC 63046.
• Technical review and development history: Summarizes the IEC/IEEE collaborative review process, expert team activities and rationale for the dual‑logo adoption.
• Future work recommendations: Identifies areas for future revision and alignment, including proposed work on IEC 61226, IEC 61513 and IEC/IEEE 60780-323.

Practical applications

IEC TR 63123 is intended to help stakeholders interpret and implement IEC 63147/IEEE 497 for accident monitoring instrumentation in nuclear power plants. Typical uses include:

• Implementing guidance for accident monitoring instrumentation and related control/electrical systems.
• Supporting national regulators, plant designers and safety assessors in mapping IEEE 497 requirements to IEC/IAEA safety frameworks.
• Informing standards committees and working groups (IEC SC 45A, IEEE NPEC) on integration issues and gaps.
• Assisting quality assurance, licensing, and compliance teams to align monitoring system design with IAEA safety guides and IEC lifecycle standards.

Who should use this standard

• Nuclear I&C engineers and electrical power system designers
• Regulatory bodies and licensing authorities
• Standards developers and committee members (IEC, IEEE, IAEA)
• Safety assessors, auditors and QA professionals working on nuclear plant instrumentation and accident monitoring

Related standards

• IEC 63147:2017 / IEEE Std 497™-2016 (primary document)
• IEC 61513, IEC 63046 (top-level SC 45A lifecycle standards)
• IEC 61226 (function categorization)
• IEC/IEEE 60780-323 (equipment qualification)
• IAEA publications referenced: SSR‑2/1, SSG‑30, SSG‑34, SSG‑39, and NSS‑17

Keywords: IEC TR 63123, IEC 63147, IEEE 497, nuclear power plants, accident monitoring instrumentation, IAEA framework, IEC SC 45A, instrumentation and control, electrical power systems.