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:
or omission of the CE101 test above). Otherwise, the CE102 test should be performed over the full frequency range 10 kHz to 2 MHz. 2 The term “requirements” in this context does not refer to legal requirements; rather, it refers to the characteristics of the design (“design requirements”) that are necessary to perform the design function credited in the Final Safety Analysis Report. DG-1333, Page 13 Figure 3.2 High-Frequency Conducted Emissions Envelopes 3.3 RE101—Radiated Emissions, Magnetic Field The RE101 test measures radiated magnetic field emissions in the frequency range 30 Hz to 100 kHz. The RE101 test may be omitted for equipment not intended to be installed in areas with other equipment sensitive to magnetic fields. The test is applicable for emissions from equipment and subsystem enclosures, as well as all interconnecting leads. The test does not apply at transmitter fundamental frequencies or to radiation from antennas. Magnetic field emissions should not be radiated in excess of the levels shown in Figure 3.3. Magnetic field emissions are measured at the specified distances of 7 cm and compared against the corresponding envelope. Figure 3.3 Magnetic-Field Radiated Emissions Envelope CE102 Operating Envelopes CE102 Operating Envelopes 79 DG-1333, Page 14 3.4 RE102—Radiated Emissions, Electric Field The RE102 test addresses the measurement of radiated electric field emissions in the frequency range from 2 MHz to 10 GHz emissions from equipment and subsystem enclosures, as well as all interconnecting leads. The test does not apply at transmitter fundamental frequencies or to radiation from antennas. Electric field emissions should not be radiated in excess of the rms values shown in Figure 3.4. At frequencies above 30 MHz, the test method should be performed for both horizontally and vertically polarized fields. Figure 3.4 Electric-Field Radiated Emissions Envelopes 3.5 IEC Emissions Tests The IEC 61000-6-4 tests address measurement of