Document: NUREG-0800
Document ID: 919b8fa0-8b11-41bd-9694-2c62120b843b
Document Type: srp
Title: Revision 7 - March 2007
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0636/ML063600403.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6
CFR Part: 
CFR Title: 

Content:
orresponds to the acceptance criteria described in 2.c above). The detectable valve opening should be based on the assumption that the valve opening is evenly divided among all the vacuum breakers. b. Vacuum Valve Operability Tests All vacuum breakers should be operability tested at monthly intervals to assure free movement of the valves. C. Implementation This position will be applied in the review of all CP, DC, and COL applications with Mark I, Mark II and Mark III containments (see also subsection V of this SRP section). The positions of this revision to Appendix A of this SRP section do not apply to plants with an operating license issued prior to January 1983. 6.2.1.1.C-17 Revision 7 - March 2007 Appendix B to SRP Section 6.2.1.1.C Summary of Mark II LOCA-Related Pool Dynamic Loads The Mark II program to establish LOCA-related pool dynamic loads has been in existence since April 1975. Since that time, a number of different load specifications have been developed. The purpose of this appendix is to identify, in one location, those generic load specifications that the staff finds acceptable. A summary of generic loads acceptable to the NRC is provided in Table B-1. This table includes the following information: load identification, a summary of the load specification, load specification clarifying criteria and reference to the NRC NUREG section that describes the NRC specific load evaluation. The staff finds most of the generic LOCA-related pool dynamic load specifications proposed by the Mark II owners acceptable. For the few cases where the staff was unable to conclude that a proposed load was acceptable, the staff developed acceptance criteria. The criteria provide load specifications that are acceptable to the staff. The staff finds that the detailed loads specifications referenced in Table B-1, along with the criteria that further clarify these loads specifications, constitute a complete set of acceptable LOCA-related pool dynamic loads. Table B-1 Mark II