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:
DG-1333, Page 24 The IEC counterparts for the RS101 test are IEC 61000-4-8, IEC 61000-4-9, and IEC 61000-4-10. Operating envelopes corresponding to the Class 4 test level for each IEC test method are shown in Table 20. The IEC counterpart for the RS103 test is IEC 61000-4-3 and its frequency range is from 26 MHz to 6 GHz. The IEC 61000-4-3 operating envelope corresponding to Level 3 in the standard specifies a test level of 10 V/m. These levels are acceptable to NRC staff for the IEC radiated susceptibility tests. Table 20 IEC 61000-4-8, -4-9, and -4-10 Operating Envelopes Method Test Level IEC 61000-4-8 30 A/m (152 dBpT) 300 A/m (172 dBpT) IEC 61000-4-9 300 A/m (172 dBpT) IEC 61000-4-10 30 A/m (152 dBpT) 4.4 EMI/RFI Susceptibility Test Summary The CS101 and CS114 tests for power leads, the CS114, CS115, and CS116 tests for signal leads, and the RS101 and RS103 tests represent the baseline susceptibility testing program. There is an alternative susceptibility testing program based on IEC 61000-4 is that is acceptable to the NRC staff for establishing susceptibility characteristics of safety-related I&C systems. Figure 4.4 shows the two acceptable susceptibility testing programs. Regardless of which susceptibility testing program is chosen, either should be applied in its entirety, without selective application of individual methods (i.e., no mixing and matching of test methods) for susceptibility testing. DG-1333, Page 25 Figure 4.4 Acceptable Alternatives for EMI/RFI Susceptibility Testing 5. Surge Withstand Capability (SWC) Specific SWC test waveforms and test methods from IEEE Std. C62.41.1-2002, IEEE Std. C62.41.2-2002, IEEE Std. C62.45-2002 and IEC 61000-4 are acceptable to the NRC staff for evaluating the effect of power surges on safety-related I&C systems intended for installation in nuclear power plants. These waveforms and test methods are identified in the guidance below and may be applied for SWC testing subject to the clarifications and conditions