Document: NUREG-0800
Document ID: 683c2eb1-8dd8-484a-a45d-437c101b525f
Document Type: srp
Title: NEW AND SPENT FUEL STORAGE
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550057.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.1.2
CFR Part: 
CFR Title: 

Content:
sign should include: i. Weirs and gates separating the spent fuel storage areas from handling areas to prevent the accidental draining of the coolant to levels inadequate for fuel cooling or radiation shielding. The bottoms of any gates should be above the top of the fuel assemblies, and the volume of the adjacent fuel-handling areas should be limited so that leakage into these areas while drained would not reduce the coolant inventory to less than 3 meters (10 feet) above the top of the fuel assemblies. ii. Absence of drains, permanently connected mechanical or hydraulic systems, and other features that by failure or improper operation could reduce coolant levels to inadequacy for cooling the spent fuel and all piping penetration locations above minimum shielding depth. I. The thermal-hydraulic analysis of the flow through the spent fuel racks is adequate for decay heat removal from the spent fuel assemblies during all anticipated operating and accident conditions. Furthermore, the analysis should show adequate natural circulation of the coolant during all anticipated operating conditions, including full core-offloads during refueling, to prevent nucleate boiling for all fuel assemblies. J. The new fuel storage racks include openings at the bottom to facilitate drainage if intended for dry storage or flooding if intended for wet storage. K. Detection and collection of spent fuel pool liner leaks incorporated into the design with capability to collect pool liner leaks (e.g. drains and sumps) to prevent uncontrolled releases of radioactive material to the environment and to keep radiation exposure as low as reasonably achievable for personnel. L. If new fuel is intended to be stored dry, adequate drainage for the new fuel storage vault to prevent accumulation of any liquid moderators. The drain system should be sized to handle the maximum flow from the rupture of the 9.1.2-10 Revision 4 - March 2007 largest water pipe in the area. Backflow into the vault through the