Document: NUREG-0800
Document ID: 931b933f-eeb8-4e82-b76a-4813dde9214a
Document Type: srp
Title: SPENT FUEL POOL COOLING AND CLEANUP SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0631/ML063190013.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.1.3
CFR Part: 
CFR Title: 

Content:
d ultimate heat sink temperature or optimizing cooling system performance). Considering the preceding measures to manage the heat load relative to cooling capability, the staff evaluates the following criteria: i. the SAR describes a method of performing decay heat load calculations using a conservative model that evaluates multiple fission product groups and considers offload size, decay time, power history, and inventory of previously discharged assemblies. ii. the SAR describes a method of calculating heat removal capability for a bulk SFP temperature of 60 °C (140 °F) and considering ultimate heat sink temperature, cooling system flow rates, and heat exchanger performance (i.e., fouling and tube plugging margin). 9.1.3-10 Revision 2 - March 2007 iii. the SAR describes appropriate administrative controls in the SAR to ensure that the full heat removal capability at a SFP temperature of 60 °C (140 °F) will exceed the calculated decay heat load at all times during the refueling offload. 2. The reviewer verifies that the system has been designed so that system functions will be maintained, as required, in the event of adverse natural phenomena such as earthquakes, tornadoes, hurricanes, and floods. The reviewer evaluates the system, using engineering judgment and the results of failure modes and effects analyses to determine the following: A. The failure of portions of the system, or of other systems not designed to seismic Category I standards and located close to essential portions of the system, or of nonseismic Category I structures that house, support, or are close to essential portions of the pool and cooling system, will not preclude essential functions. Statements to the effect that the above conditions are met are acceptable. Reference to site features, the general arrangement and layout drawings, and the seismic design classifications for structures and systems included with the application will be necessary. B. The essential portions of the spent fuel