Document: NUREG-0800
Document ID: 496b5bd8-c9a2-4cf6-a703-e41c51e155ec
Document Type: srp
Title: CHANNEL MIGRATION OR DIVERSION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1819/ML18190A201.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.9
CFR Part: 
CFR Title: 

Content:
GDC 2, “Design Bases for Protection Against Natural Phenomena,” as it relates to: (1) appropriate consideration of the most severe of the natural phenomena that have been 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, (2) appropriate combinations of the effects of normal and accident conditions with the effects of the natural phenomena, and (3) importance of the safety functions to be performed. 5. 10 CFR Part 50, Appendix A, GDC 44, “Cooling Water,” as it relates to providing an ultimate heat sink for normal operating and accident conditions. Regulatory Guides Regulatory Guides (RGs) are issued to describe and make available to the public methods acceptable to the NRC staff of implementing specific parts of the Commission's regulations, to delineate techniques used by the staff in evaluating specific problems or postulated accidents, or to provide guidance to applicants. Regulatory Guides are not substitutes for regulations, and compliance with them is not required. Methods and solutions different from those set out in the guides will be acceptable if they provide a basis for the findings requisite to the issuance or continuance of a permit or license by the Commission. SRP Acceptance Criteria Specific SRP acceptance criteria acceptable to meet NRC's regulations and consistent with the scope of the review addressed in this SRP section are listed below. The following RGs should 2.4.9-6 Draft Revision 4 – September 2018 be consulted, as applicable, in connection with the review of this particular flood-causing mechanism: • RG 1.27, “Ultimate Heat Sink for Nuclear Power Plants,” describes the applicable ultimate heat sink capabilities. • RG 1.29, “Seismic Design Classification,” identifies the seismic design bases for SSCs important to safety. • RG 1.59, “Flood Design Basis for Nuclear Power Plants,” as