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:
Thermal Power. The rated reactor core thermal power for the design should be specified. 3. Legend for Figures and Acronyms and Abbreviations A legend supporting Tier 1 figures should be provided. The symbology selected should be consistent and as closely aligned as possible with the symbology in Tier 2, in common industry use, industry codes and standards, and NRC rules, regulations, and guidance. Thus, should questions on interpretation arise, these references would aid in understanding the intent of the information. In addition, the meanings of acronyms and abbreviations should be provided for any of those terms used in Tier 1. 4. System Design Descriptions, Figures, and ITAAC. System design descriptions and ITAAC should be provided for: (a) structures and systems that are fully within the scope of the standard design certification, and (b) the in-scope portions of those systems that are only partially within the scope of the standard design certification. The system design descriptions should be accompanied by the appropriate ITAAC. The selection methodology and criteria for the system design descriptions and ITAAC should be specified in DCD Tier 2 Section 14.3. Entries should be provided in Tier 1 for all systems necessary to define the full scope of the design. Checklists for fluid systems, 14.3-16 March 2007 electrical systems, and building structures are provided in Appendix C to SRP Section 14.3 to achieve consistency in treatment of issues. A. Design Descriptions and Figures. The design descriptions (DD) address the most safety-significant aspects of each of the systems of the design, and were derived from the detailed design information contained in Tier 2. The applicant should put the top-level design features and performance characteristics that were the most significant to safety in the Tier 1 design descriptions. The level of detail in Tier 1 is governed by a graded approach to the SSCs of the design, based on the safety significance of the functions