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:
potassium iodide (KI) tablets. These methods are acceptable with the following exceptions. Appendices C and D are not endorsed, instead, guidance is being developed in Draft Regulatory Guides DG-1111, "Atmospheric Relative Concentrations for Control Room Radiological Habitability Assessments at Nuclear Power Plants" (Ref. 18), and DG-1113 (Ref. 5), or Regulatory Guide 1.183 (Ref. 10) should be used. The staff endorses the use of the guidance in Appendix F of NEI 99-03 on an interim basis while corrective actions are being taken to resolve CRHSs that do not meet their licensing bases, subject to the following: • Section 2.2 of Appendix F addresses the training and qualification of control room operators for SCBA. If SCBA units will be used as an interim compensatory measure for greater than 90 days while the plant is in Operating Condition or Mode 1, simulator crew training accident scenarios in which operators wear SCBAs should be performed. These scenarios should last about 2 hours and include a simulated watch turnover. • Section 2.6 of Appendix F addresses the availability of adequate methods to refill depleted SCBA cylinders. The impact of a loss of offsite power or airborne contamination at the refill compressor stations should be considered. Some licensees were allowed to leave TMI Action Item lll.D.3.4 actions open until the alternative source term rulemaking and regulatory guidance were published. These actions have been completed with the issuance of 10 CFR 50.67 and Regulatory Guide 11 1.183 (Ref. 10). Therefore, to demonstrate CRH all affected licensees should take the appropriate actions defined in this guide to close these outstanding commitments. D. IMPLEMENTATION This section provides information to applicants and licensees regarding the NRC staff's plans for using this regulatory guide. This draft regulatory guide has been released to encourage public participation in its development. Except in those cases in which an applicant or licensee