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:
uid 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 drain system should be prevented. M. If necessary to limit offsite dose consequences from a fuel-handling accident or from spent fuel pool boiling, an air filtration system designed to meet the requirements of RG 1.52. N. If the spent fuel storage facility is designed to allow boiling during accident conditions the spent fuel pool liner and containing structure should withstand the high temperatures of the boiling coolant. O. Appropriate monitoring systems included in the design. For spent fuel storage, monitoring systems should detect pool water levels, pool temperatures, and pool building radiation levels. Alarms should be both local and in a continuously manned location. Guidance acceptable to the staff for spent fuel monitoring requirements is in position C.7 of Regulatory Guide 1.13. For dry storage of new fuel assemblies, the dry fuel storage facility should have one of the following pursuant to 10 CFR 50.68: i. Criticality monitors as specified in 10 CFR 70.24. ii. Administrative controls and/or design features to prevent flooding. iii. Keff not more than 0.95 if the storage area is flooded with unborated water and not more than 0.98 if the storage area is filled with an optimum moderator (e.g., fire extinguishing foam), assuming fuel of the maximum reactivity. SRP Section 9.1.1 provides the necessary guidance for criticality evaluation in the new and spent fuel storage areas. Criticality monitors are not required for the underwater storage of fuel pursuant to 10 CFR 70.24, but there should be area radiation monitoring equipment for spent fuel storage pursuant to GDC 63. 3. The reviewer determines whether the safety function of the facility will be maintained, as required, if the facility is subjected to adverse natural phenomena of earthquakes, tornadoes,