Document: NUREG-0800
Document ID: aa5392df-6e04-43cb-8a51-9dde890a6e6c
Document Type: srp
Title: ELECTRICAL SYSTEMS - INSPECTIONS, TESTS, ANALYSES, AND
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070660625.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.3.6
CFR Part: 
CFR Title: 

Content:
at locations provided for remote shutdown. Detection of undervoltage conditions along with the starting and loading of EDG should be included in ITAAC. This is a direct safety function in response to design basis event of loss of power. Problems with relay settings should be considered in this requirement. Other Electrical Equipment Important to Safety In addition to the Class 1E systems addressed above, other aspects of the electrical design that are deemed to be important to safety and the top-level design commitments are included in Tier 1. 1. Offsite Power To ensure that the requirements of GDC 17 for the adequacy and independence of the preferred offsite power sources within the standard design scope were met, ITAAC should verify the capacity and capability of the offsite sources to feed the Class 1E divisions, and the independence of those sources. ITAAC should be included to inspect the direct connection of the offsite sources to the Class 1E divisions and to inspect for the independence/separation of the offsite sources. ITAAC should be developed to inspect for appropriate lightning protection and grounding features. In addition, the Design Description includes "interface" requirements for the portions of the offsite power outside of the standard design scope; however, no ITAAC are included for the interfaces. The interfaces define the requirements that the offsite portion of the design (that is out-of-scope) must meet to support and not degrade the in-scope design (See also Appendix A to SRP Section 14.3). 2. Containment Electrical Penetrations To ensure the containment electrical penetrations (both those containing Class 1E circuits and those containing Non Class 1E circuits) do not fail due to electrical faults and potentially breach the containment, ITAAC should verify that all electrical containment penetrations are protected against postulated currents greater than their continuous current rating. 3. Alternate AC Power Source (if applicable) To ensure