Document: NUREG-0800
Document ID: 988a555f-fdfa-4452-829d-c06654bfbba5
Document Type: srp
Title: Initial Plant Test Program - Design Certification and New License Applicants
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070660618.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.2
CFR Part: 
CFR Title: 

Content:
interlocks, Class 1E power sources and divisions, equipment to be qualified for harsh environments (and other than harsh for certain I&C equipment), and interface requirements, as applicable. Figures should be provided for most systems, with the amount of information depicted based on the safety significance of the SSCs. Where figures are not required, generally for simple non-safety significant systems, the narrative should be sufficient to describe the system. The figures are intended to depict the functional arrangement of the significant SSCs of the standard design. Particular attention should be paid to the legend for the figures to ensure common understanding of requirements, system boundaries, piping code breaks, electrical configurations, etc. 14.3-17 March 2007 Numeric performance values and key parameters in safety analyses should be specified in the design descriptions based on their safety significance; however, numbers for all parameters need not be specified unless there is a specific reason to include them (e.g., important to be maintained for the life of the facility). The use of codes and standards in Tier 1 should be minimized, with exceptions granted on a case-by-case basis. Instead, the applicable requirements from the regulations, codes, or standards should be stated in Tier 1, rather than reference them. This ensures that requirement is clear, and allows flexibility if the reference changes. References to various parts of ASME Section III are possible for verification of issues such as pressure boundaries, and references to ASME Section XI for pre-service inspection requirements. Also, references to 10 CFR Part 20 may be required for use in radiation protection. The specific code edition, volume, version, date, etc., should be specified in Tier 2, rather than Tier 1. This provides for specific requirements that are acceptable, yet allows the code to be updated via the change process in the rule certifying the design. It is important to note