Document: NUREG-0800
Document ID: 899b3059-69f1-4f7b-bead-1d58e5f4870f
Document Type: srp
Title: Revision 5 - March 2007
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550080.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7
CFR Part: 
CFR Title: 

Content:
y justified, consistent with current regulatory practice. Regulatory Guide 1.75, “Criteria for Independence of Electrical Safety Systems,” endorses IEEE Std 384-1992, “IEEE Standard Criteria for Independence of Class 1E Equipment and Circuits,” which identifies specific electrical isolation criteria for isolation devices used in instrumentation and control circuits. These isolation criteria form part of the basis for this BTP. Additional guidance on applying the safety system criteria of IEEE Std 603-1991 to computer-based safety systems is provided by IEEE Std 7-4.3.2-2003, “IEEE Standard Criteria for Digital Computers in Safety Systems of Nuclear Power Generating Stations,” as endorsed by Regulatory Guide 1.152, Revision 2, “Criteria for Digital Computers in Safety Systems of Nuclear Power Plants.” SRP Appendix 7.1-D provides additional guidance. IEEE Std C37.90.1-2002, “IEEE Standard for Surge Withstand Capability (SWC) Tests for Protective Relays and Relay Systems Associated with Electric Power Apparatus,” specifies design tests for relays and relay systems that relate to their immunity to electrical transients induced by fault conditions. IEEE Std C62.41.1-2002, “IEEE Guide on the Surge Environment in Low-Voltage (1000 V and Less) AC Power Circuits,” describes the temporary overvoltages induced by fault conditions in low-voltage AC power circuits. IEEE Std C62.41.2-2002, “IEEE Recommended Practice on Characterization of Surges in Low-Voltage (1000 V and Less) AC Power Circuits,” characterizes the overvoltage environment at locations on AC power circuits described in IEEE Std C62.41.1-2002 by means of standardized waveforms and other stress parameters. IEEE Std C62.45-2002, “IEEE Recommended Practice on Surge Testing for Equipment Connected to Low-Voltage (1000 V and Less) AC Power Circuits,” provides acceptable guidance for overvoltage testing of equipment connected to low-voltage AC power circuits. IEEE Std C62.23-1995 (R2001),