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:
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 specified. Acceptable limits are given for each test in the form of identified operating envelopes. The SWC practices described in IEEE Std. C62.41.1-2002, IEEE Std. C62.41.2-2002, and IEEE Std. C62.45-2002, are acceptable to the NRC staff regarding the effect of power surges on safety- related I&C systems. IEEE Std. C62.41.2-2002 defines a set of surge test waveforms that has manageable dimensions and represents a baseline surge environment. As discussed below, the NRC staff takes exception to the single withstand level specified in this standard to represent the surge environment in all locations. Typical environmental conditions for power surges in a nuclear power plant can be represented by the waveforms given in Table 21. These waveforms are acceptable to serve as the basis for SWC testing. IEEE Std. C62.45-2002 describes the associated test methods and equipment to be employed when performing the surge tests. These test methods are acceptable to NRC staff. EMI/RFI Susceptibility MIL-STD IEC Power CS101 CS114 Baseline Alternate Conducted Radiated CS114 CS115 CS116 RS101(*) RS103 61000-4-6 61000-4-13 61000-4-16 61000-4-6 61000-4-16 61000-4-4 61000-4-5 61000-4-12 61000-4-8(*) 61000-4-9(*) 61000-4-10(*) 61000-4-3 Signal Power Signal (*) Omission based on proximity to magnetic field emitters DG-1333, Page 26 Table 21 IEEE Std. C62.41.2-2002 Power Surge Waveforms Parameter Ring Wave Combination Wave EFT Burst Waveform Open-circuit voltage Open-circuit voltage Short-circuit current Pulses in 15-ms bursts Rise time 0.5 µs 1.2 µs 8 µs 5 ns Duration 100 kHz ringing 50 µs 20 µs 50 ns The IEC 61000-4 tests comparable to the IEEE Std. C62.41.2-2002 tests are listed in Table 22. The test waveforms are the same and the test procedures are very similar. Hence, a direct