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:
band. Specifically, the CE101 test should be performed to evaluate conducted emissions from 30 Hz to 10 kHz, the CE102 test should be performed across the lower range of its frequency band to evaluate conducted emissions from 10 kHz to 150 kHz, and the RE101 test should be performed to evaluate radiated emissions from 30 Hz to 100 kHz. The specifications for the IEC 61000-6-4 test call for employing the CISPR 16 measurement techniques. These techniques are similar to those used in the MIL-STD-461G CE102 and RE102 tests, with some differences. Nevertheless, the tests have been shown to yield similar results (Ref. 26). Values for the IEC 61000-6-4 conducted emissions envelopes comparable to those for CE102 are given in Table 4. Values for the IEC 61000-6-4 radiated emissions envelopes comparable to RE102 are given in Table 5. Table 4 IEC 61000-6-4 Conducted Emissions Envelopes Frequency Range Test Level (dB µV/m) 150 kHz to 500 kHz 79 quasi-peak 500 kHz to 30 MHz 73 quasi-peak Table 5 IEC 61000-6-4 Radiated Emissions Envelopes Frequency Range Test Level (dB µV/m) 30 MHz to 230 MHz 40 quasi-peak @ 10 m 230 MHz to 1 GHz 47 quasi-peak @ 10 m 1 GHz to 3 GHz 76 peak @ 3m 3 GHz to 6 GHz 80 peak @ 3m 3.6 EMI/RFI Emissions Test Summary The CE101, CE102, RE101, and RE102 tests from MIL-STD-461G represent the baseline emissions testing program acceptable to the NRC staff. The CE101 test may be omitted if the nuclear power plant has power quality controls in place (see conditions in the CE101 test guidance). The CE102 test in the frequency range 10 kHz to 450 kHz may be omitted if power quality controls are in place. The RE101 test may be omitted for equipment not intended to be installed in areas with other equipment sensitive to magnetic fields. As an alternative, the application of IEC 61000-6-4 tests is acceptable to the NRC staff in the form of two options. In the first option, the identified IEC emissions tests are acceptable as a standalone program if the two conditions