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:
applicant is required to identify differences between the design features, analytical techniques, and procedural measures proposed for its facility and the SRP acceptance criteria and evaluate how the proposed alternatives to the SRP acceptance criteria provide acceptable methods of compliance with the NRC regulations. The staff's review of the standard plant is conducted to ensure, in part, that Tier 1 contains top level design, fabrication, testing, and performance requirements for SSCs important to safety. Design Descriptions and ITAAC should be established to verify that these top level requirements (or design commitments) are met when the plant is built. IEEE nuclear standards should be used, as appropriate, to further establish top level requirements. IEEE Std. 308, "IEEE Standard Criteria for Class 1E power Systems for Nuclear Power Generating Stations," in conjunction with other related IEEE standards, establish specific design criteria for nuclear power plant electrical systems and equipment. The standard design Class 1E electrical systems may include: (1) the Class 1E electrical power distribution system, (2) the emergency diesel generators (EDGs), (3) the Class 1E direct current power supply, and (4) the Class 1E vital ac and Class 1E instrument and control power supplies. Using the above regulations, IEEE standards, operating experience, and PRA as its bases, the applicant should establish top-level design commitments for the Class 1E electrical systems of the standard design to be included in the design descriptions and verified by ITAAC. The top-level design commitments for the Class 1E electrical systems include design aspects related to: 1. Equipment qualification for seismic and harsh environment To ensure that the seismic design requirements of GDC 2 and the EQ requirements of 10 CFR 50.49 have been adequately addressed, a "basis configuration" standard ITAAC may be established for applicable systems to verify these design aspects of electrical