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:
design. 14.3-24 March 2007 APPENDIX C DETAILED REVIEW GUIDANCE FLUID SYSTEMS REVIEW CHECKLIST The following provides guidance and rationale of what should be included in the Tier 1 Design Descriptions (DDs), figures, and ITAAC for fluid systems. Examples of acceptable Tier 1 information may be found in the DCDs for the evolutionary designs. I. Design Descriptions and Figures A. Design Descriptions The following information should be included in the various Design Descriptions in a consistent order. i. System purpose and functions (minimum is safety functions, may include some non-safety functions) The DD identifies the system's purpose and function. It captures the system components that are involved in accomplishing the direct safety function of the system. Each DD should include wording (preferably in the first paragraph) that identifies whether the system is safety-related or is a non-safety system. Exceptions should be noted if parts of the system are not safety-related or if certain aspects of a non-safety system have a safety significance. ii. Location of system The building that the system is located (e.g., containment, reactor building, etc.) should be included in the DD. iii. Key design features of the system The design description should describe the components that make up the system. Key features such as the use of the some of the safety relief valves to perform as the Automatic Depressurization System should be described in the DD. However, details of a components design, such as the internal workings of the MSIVs and SRVs, need not be included in the design description because this could limit the COL applicant or licensee to a particular make and model of a component. If the results of the PRA indicate that a particular component or function of a system is risk significant, that component or function should be described in the DD. Any features such as flow limiters, backflow protection, surge tanks, severe accident features, etc. should be described