Document: NRC Regulatory Guide
Document ID: 74c49394-8dbf-46e7-b62a-b85de93b47d8
Document Type: regulatory_guide
Title: Initial Test Programs for Water-Cooled Nuclear Power Plants + HISTORY - HISTORY 11/2012 – DG-1259 , Proposed Revision 4 11/2006 – DG-1166 , Proposed Revision 3 (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1229/ML12298A071.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.68
CFR Part: 
CFR Title: 

Content:
d presence of foreign material and fluids. ADS initiation is provided to reduce pressure during LOCAs when high pressure injection systems are unable to restore reactor vessel water level. This allows makeup of cooling water from low pressure injection systems or passive core cooling systems.8 3. Containment Post-accident Heat Removal Systems. Testing of the containment spray system should include demonstrations that the spray nozzles, spray headers, and piping 7 Regulatory Guide 1.79, “Preoperational Testing of Emergency Core Cooling Systems for Pressurized Water Reactors,” (Ref. 20) provides specific guidance for PWRs. 8 Regulatory Guide 1.79.1, “Initial Test Program of Emergency Core Cooling Systems for New Boiling Water Reactors,” (Ref. 21) provides specific guidance for BWRs. Appendix A to DG-1259, Page A-10 are free of debris; chemical addition systems operate properly; and proper transfer to the recirculation phase can be accomplished. 4. Containment Combustible Gas Control System (this includes the backup purge system). For containment combustible gas control systems located outside containment, testing should include demonstration that containment hydrogen monitoring is functional without the operation of the hydrogen recombiner. For hydrogen recombiners shared between plants or sites, tests should include demonstration that the shared recombiner can be transported and connected to the combustible gas control system within the time stated in the final safety analysis report (FSAR). 5. Cold Water Interlocks (including logic, circuitry, and final control devices used to prevent cold water injection into the reactor vessel). 6. Air Return Fans (used in ice condenser containments) and Suppression Pool Makeup Systems (used in BWR Mark III containments). 7. Ventilation, Recirculation, and Filter Systems (provided to minimize radioactive releases as a result of postulated accidents, including fuel handling accidents).9,10 8. Tanks and Other Sources of