Document: NUREG-0800
Document ID: ec8e8c49-ea1e-4b46-a508-500ea11caad2
Document Type: srp
Title: ULTIMATE HEAT SINK
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350549.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.2.5
CFR Part: 
CFR Title: 

Content:
EB) verifies the ultimate heat sink water levels, meteorological and natural phenomena criteria, and transient analysis of the cooling water inventory as part of its primary review responsibility foi' SRP Section 2.4. The review for fire protec- tion, technical specifications, and quality assurance are coordinated and per- formed by the Chemical Engineering Branch, Licensing Guidance Branch, and Quality Assurance Branch as part of their primary review responsibility for SRP Sections 9.5.1, 16.0, and 17.0, respectively. 9.2.5-2 Rev. 2 - July 1981 For those areas of review identified above as being reviewed as part of the primary review, responsibility of other branches, the acceptance criteria and their methods of application are contained in the SRP sections corresponding to those branches. II. ACCEPTANCE CRITERIA Acceptability of the design of the ultimate heat sink, as described in the appli- cant's Safety Analysis Report (SAR), including related sections of Chapters 2 and 3 of the SAR, is based on specific general design criteria and regulatory guides and on independent calculations and staff judgments with respect to system adequacy. The design-of the ultimate heat sink is acceptable if the system and the asso- ciated complex of water sources, including retaining structures and canals or conduits connecting the sources with the station, are in accordance with the following criteria: 1. General Design Criterion 2, as related to structures housing the system and the system itself being capable of withstanding the effects of natural phenomena such as earthquakes, tornadoes, hurricanes, and floods. Accep- tance is based on meeting the guidance of Regulatory Guide 1.29, Position C-1 and Regulatory Guide 1.27, Positions C-2 and C-3. 2. General Design Criterion 5, as related to shared systems and components important to safety being capable of performing required safety functions. 3. General Design Criterion 44, as related to: a. The capability to transfer heat loads