Document: NUREG-0800
Document ID: a9242e96-646c-405b-bcbe-0f249e45b75c
Document Type: srp
Title: Appendix 7-A
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0525/ML052500544.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7
CFR Part: 
CFR Title: 

Content:
round (common mode). • Surges should be applied to power terminals. The guidance of ANSI Std C62.45 is acceptable for surge testing at the power input. • The input terminals should be monitored to assure that no unacceptable interactions (degradations or distortions) between the safety and non-safety circuits would occur. For isolation between redundant safety circuits: • MCFs should be applied to the input in the transverse mode and between any input terminal and ground (common mode); the output should be monitored to assure that no unacceptable interactions (degradations or distortions) between redundant safety circuits will occur. • Surges should be applied to power terminals. The guidance of ANSI Std C62.45 is acceptable for surge testing at the power input. • MCFs should also be applied to the output terminals in the transverse mode and between any output terminal and ground (common mode); the input should be monitored to assure that no unacceptable interactions (degradations or distortions) between redundant safety circuits will occur. Rev. 4 — June 1997 Appendix 7-A BTP HICB-11-6 MCFs should be applied to the isolation device for a sufficient duration to allow any measurable effects to occur on the isolation device and to allow monitored values or effects to reach steady-state. Description of Test Results Test data and results should verify that the design basis faults, including short circuits, open circuits, grounds, MCF, and surge were applied to the device in all of the applicable connection modes (i.e., applicable input, output, power, and ground connection modes). Test data and results should verify that the test acceptance criteria are met. 4. Review Procedures Confirm that the device design conforms to the guidance of Reg. Guides 1.75 and 1.153. Confirm that the applicant/licensee has established an acceptable test method and that the specified testing addresses the conditions of the intended applications. Confirm that the