Document: NUREG-0800
Document ID: 855b2438-2ddf-48e9-8762-e39097109e12
Document Type: srp
Title: FUEL SYSTEM DESIGN
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340660.pdf
Revision Date: 2023-06
Chapter: 4
Section ID: 4.2
CFR Part: 
CFR Title: 

Content:
information and associated tolerances are necessary for an acceptable fuel system description: Type and metallurgical state of the cladding Cladding outside diameter Cladding inside diameter Cladding inside roughness Pellet outside diameter Pellet roughness Pellet density Pellet resintering data Pellet length Pellet dish dimensions Burnable poison content Insulator pellet parameters Fuel column length Overall rod length Rod internal void volume Fill gas type and pressure Sorbed gas composition and content Spring and plug dimensions Fissile enrichment Equivalent hydraulic diameter Coolant pressure The following design drawing have also been found necessary for an acceptable fuel system description: Fuel assembly cross section Fuel assembly outline Fuel rod schematic Spacer grid cross section Guide tube and nozzle joint Control rod assembly cross section Control rod assembly outline Control rod schematic Burnable poison rod assembly cross section Burnable poison rod assembly outline Burnable poison rod schematic Orifice and source assembly outline 4.2-8 Rev. 2 - July 1981 C. Design Evaluation The methods of demonstrating that the design bases are met must be reviewed. Those methods include operating experience, prototype testing, and analytical predictions. Many of these methods will be presented generically in topical reports and will be incorporated in the Safety Analysis Report by reference. 1. Operating Experience Operating experience with fuel systems of the same or similar design should be described. When adherence to specific design criteria can be conclusively demonstrated with operating experience, prototype testing and design analyses that were performed prior to gaining that experience need not be reviewed. Design criteria for fretting wear, oxidation, hydriding, and crud buildup might be addressed in this manner. 2. Prototype Testing When conclusive operating experience is pot available, as with the introduction of a design change, prototype testing