Document: NUREG-0800
Document ID: 482aa99f-2f4b-4e4c-b6c4-3ad5b3d83b59
Document Type: srp
Title: COOLING WATER CANALS AND RESERVOIRS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070730431.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.8
CFR Part: 
CFR Title: 

Content:
that nuclear power plant SSC important to safety be designed to withstand the effects of natural phenomena such as hurricanes, floods, tsunami, and seiches without loss of capability to perform their safety functions. This criterion further specifies that the design bases for these SSC shall reflect the following: A. Appropriate consideration of the most severe natural phenomena historically reported for the site and surrounding area, with sufficient margin for the limited accuracy, quantity, and period of time in which the historical data have been accumulated; B. Appropriate combinations of the effects of normal and accident conditions with those of the natural phenomena; and C. The importance of the safety functions to be performed. The design function of cooling water canals and reservoirs is to provide adequate cooling water to safety-related components of the emergency core cooling system and to reactor auxiliary equipment during normal operations, anticipated operational occurrences, and accident conditions. Compliance with GDC 2 ensures that cooling water canals and reservoirs will perform their design safety functions while withstanding the effects of the most severe natural phenomena likely to occur (including floods and droughts) in combination with normal operations, anticipated operational occurrences, or accident conditions. 2.4.8-6 Revision 3 - March 2007 For applications pursuant to 10 CFR Part 52, meeting the applicable requirements of 10 CFR 52.17 and 10 CFR 52.79 that correspond to GDC 2 provides a level of assurance that the most severe hydrologic site characteristics have been identified; whether GDC 2 is met with respect to the adequacy of the associated design bases is be evaluated pursuant to other SRP sections. 3. Compliance with GDC 44 requires a system for transferring heat from SSC important to safety to an ultimate heat sink during normal operations, anticipated operational occurrences, and accident conditions. GDC 44 applies to this