Document: NUREG-0800
Document ID: 74415b71-98a0-4109-9ba7-8a72a89a3d18
Document Type: srp
Title: ULTIMATE HEAT SINK
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070520.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.2.5
CFR Part: 
CFR Title: 

Content:
sition C.1, and Regulatory Guide 1.27, Positions C.2 and C.3. In addition, 48 for a UHS formed by a dam or a system of dikes or levees, acceptance is also based on the UHS being designed in accordance with "Federal Guidelines for Dam Safety," as applicable.49 2. The applicant has met the requirements of General Design Criterion 5 with respect to sharing of structures, systems, and components by demonstrating that such sharing does not affect the safe shutdown of either unit in the event of an active or passive failure. 3. The applicant has met the requirements of General Design Criterion 44 with respect to the ultimate heat sink. Acceptance is based on meeting the guidance of Regulatory Guides 1.27, positions C.2 and C.3; Regulatory Guide 1.72, 50 positions C.1, C.4, C.5, C.6, and C.7; as well as Branch Technical 51 Position ASB 9-2. 4. The applicant has met the requirements of General Design Criterion 45 with respect to inservice inspection of the safety-related components and equipment by demonstrating the accessibility of the UHS system for periodic inspections. For dams, slopes, canals, or other water-control structures, acceptance is based on meeting the guidance of Regulatory Guide 1.127.52 5. The applicant has met the requirements of General Design Criterion 46 with respect to periodic pressure and functional testing to assure ensure structural and leaktight integrity, operability, and performance of its active components, and operability of the system as a whole by demonstrating the capability to operate the system at full capacity during normal startup or shutdown procedures or during normal operation without degrading the system to provide for a safe shutdown or to mitigate the consequences of an accident. 9.2.5-11 DRAFT Rev. 3 - April 1996 For design certification reviews, the findings will also summarize, to the extent that the review is not discussed in other safety evaluation report sections, the staff’s evaluation of inspections, tests, analyses,