Document: NRC Regulatory Guide
Document ID: 8291b9eb-e4a7-4806-8b5b-1deca2ff1fe2
Document Type: regulatory_guide
Title: Control Room Habitability at Light-Water Nuclear Power Reactors
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0207/ML020790125.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.196
CFR Part: 
CFR Title: 

Content:
ITY: MODES 1, 2, 3, 4, [5, and 6], During movement of [recently] irradiated fuel assemblies. ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One CREFS train inoperable. A.1 Restore CREFS train to OPERABLE status. 7 days B. Two CREFS trains inoperable due to iInoperable control room boundary in MODE 1, 2, 3, or 4 for reasons other than failure to meet SR 3.7.10.4. B.1 Restore control room boundary to OPERABLE status. 24 hours 14 days CREFS 3.7.10 CONDITION REQUIRED ACTION COMPLETION TIME A-3 C. Inoperable control room boundary because of failure to meet SR 3.7.10.4. C.1 Initiate action to restore control room boundary to OPERABLE status. AND C.2 Initiate compensatory measures to comply with GDC- 19. AND C.3 Provide NRC with corrective action plan including completion schedule. Immediately Immediately 90 days CD. Required Action and associated Completion Time of Condition A or B not met in MODE 1, 2, 3, or 4. CD.1 Be in MODE 3. AND CD.2 Be in MODE 5. 6 hours 36 hours DE. Required Action and associated Completion Time of Condition A not met [in MODE 5 or 6, or] during movement of [recently] irradiated fuel assemblies. DE.1 - NOTE - [ Place in toxic gas protection mode if automatic transfer to toxic gas protection mode is inoperable. ] Place OPERABLE CREFS train in emergency mode. OR DE.2 Suspend movement of [recently] irradiated fuel assemblies. Immediately Immediately CREFS 3.7.10 CONDITION REQUIRED ACTION COMPLETION TIME A-4 EF. Two CREFS trains inoperable [in MODE 5 or 6, or] during movement of [recently] irradiate fuel assemblies. EF.1 Suspend movement of [recently] irradiated fuel assemblies. Immediately FG. Two CREFS trains inoperable in MODE 1, 2, 3, or 4 for reasons other than Condition B or C. FG.1 Enter LCO 3.0.3 Immediately SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.7.10.1 Operate each CREFS train for [ 10 continuous hours with the heaters operating or (for systems without heaters)  15 minutes]. 31 days SR 3.7.10.2 Perform required CREFS