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:
circuit test voltage and 2 kA short circuit current 61000-4-6 Level 3: 140 dBµV test voltage 61000-4-12 Level 3: 4 kV test voltage 61000-4-16 Level 3: see Table 12 4.3 EMI/RFI Radiated Susceptibility Testing The MIL-STD-461G test methods that are acceptable to the NRC staff for addressing the radiated EMI/RFI susceptibility of safety-related I&C systems in nuclear power plants are listed in Table 18. The comparable IEC 61000-4 test methods acceptable to characterize equipment susceptibility to radiated EMI/RFI are listed in Table 19. These test methods cover susceptibility to radiated interference resulting from electromagnetic emissions in nuclear power plants. Guidance on the test methods and operating envelopes follow below. Table 18 MIL-STD-461E EMI/RFI Radiated Susceptibility Test Methods Method Description RS101 Radiated susceptibility, magnetic field, 30 Hz to 100 kHz RS103 Radiated susceptibility, electric field, 30 MHz to 10 GHz R = radiated and S = susceptibility Table 19 IEC 61000-4 EMI/RFI Radiated Susceptibility Test Methods Method Description 61000-4-8 Radiated susceptibility, magnetic field, 50 Hz and 60 Hz 61000-4-9 Radiated susceptibility, magnetic field, 50/60 Hz to 50 kHz 61000-4-10 Radiated susceptibility, magnetic field, 100 kHz and 1 MHz 61000-4-3 Radiated susceptibility, electric field, 26 MHz to 6 GHz DG-1333, Page 23 4.3.1 RS101—Radiated Susceptibility, Magnetic Fields The RS101 test ensures that equipment and subsystems are not susceptible to radiated magnetic fields in the frequency range 30 Hz to 100 kHz. The RS101 may be omitted for equipment that is not intended to be installed in areas with strong sources of magnetic fields (e.g., CRTs, motors, cable bundles carrying high currents) and that follows the limiting practices endorsed in this guide (see Regulatory Position C.2). The test is applicable to equipment and subsystem enclosures and all interconnecting leads. The test is not applicable for electromagnetic coupling via antennas.