Document: NUREG-0800
Document ID: 159cf729-f983-4b84-a109-82ef8efdeb60
Document Type: srp
Title: COMMUNICATIONS SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550037.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.2
CFR Part: 
CFR Title: 

Content:
unctions. Communication systems will typically be composed of commercial equipment. Therefore, the equipment should be appropriately qualified commensurate with the safety performance of the equipment functions. The guidance of EPRI NP-5652, “Guideline for the Utilization of Commercial-Grade Items in Nuclear Safety-Related Applications,” describes qualification processes and criteria that, while not directly applicable to nonsafety systems, should be considered in the qualification of communications system equipment. In a similar manner, the guidance of EPRI TR-106439, “Guideline on Evaluation and Acceptance of Commercial Grade Digital Equipment for Nuclear Safety Applications,” (accepted by an NRC safety evaluation dated July 17, 1987, should be considered if computer-based equipment is involved. I. Verify that communications equipment will be compatible with the electromagnetic interference (EMI) and radiofrequency interference (RFI) environment of the plant and that design measures have been taken such that there will be no interference between wireless communications systems and other plant equipment. Regulatory Guide 1.180, “Guidelines for Evaluating Electromagnetic and Radio-Frequency Interference in Safety-Related Instrumentation and Control Systems,” identifies electromagnetic environment 9.5.2-8 Revision 3 - March 2007 operating envelopes, design, installation, and test practices acceptable to the staff for addressing the effects of EMI, RFI, and power surges on I&C systems and components important to safety. While nonsafety systems are not part of this regulatory guide, control of EMI/RFI from these systems is necessary to ensure that safety-related I&C systems can continue to perform properly in the nuclear power plant environment. When feasible, the emissions from nonsafety-related systems should be held to the same levels as those from safety-related systems. J. Verify the adequacy of any special equipment facilitating communications with