Document: NRC Regulatory Guide
Document ID: 82021804-a487-471b-a76c-095315525b53
Document Type: regulatory_guide
Title: Guidelines for Evaluating Electromagnetic and Radio-Frequency Interference in Safety-Related Instrumentation and Control Systems (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1628/ML16281A531.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.180
CFR Part: 
CFR Title: 

Content:
of modified or different electromagnetic operating envelopes (e.g., lower site-specific envelopes). Harmonization with International Standards It is the NRC’s policy to harmonize with international standards, particularly documents from the International Atomic Energy Agency (IAEA). The NRC staff reviewed guidance from the IAEA and did not identify any standards that provided useful guidance to NRC staff, applicants, or licensees. The NRC staff reviewed guidance from the International Electrotechnical Commission (IEC). The review identified the following standards that include relevant EMC test methods for evaluating the impact of conducted and radiated EMI/RFI, power surge, and electrostatic discharge for safety-related I&C systems. For the reasons set forth in detail below in Section C of this RG, the staff concludes that portions of these IEC test standards are adequate, and endorses them, in part, in this RG (see Table 1 below.) This RG incorporates similar design and performance guidelines and is consistent with the safety principles provided in these publications. These IEC standards include: • IEC 61000-3, “Electromagnetic Compatibility (EMC) - Part 3: Limits,” • IEC 61000-4, “Electromagnetic Compatibility (EMC) - Part 4: Testing and Measurement Techniques,” and, • IEC 61000-6, “Electromagnetic Compatibility (EMC) - Part 6: Generic Standards.” Documents Discussed in Staff Regulatory Guidance This RG endorses, in whole or in part, the use of one or more codes or standards developed by external organizations, and other third party guidance documents. These codes, standards and third party guidance documents may contain references to other codes, standards or third party guidance documents (“secondary references”). If a secondary reference has itself been incorporated by reference into NRC regulations as a requirement, then licensees and applicants must comply with that standard as set forth in the regulation. If the secondary reference