Document: NRC Regulatory Guide
Document ID: e75bce6f-d094-4709-bb7c-545c8bf5ad94
Document Type: regulatory_guide
Title: Atmospheric Relative Concentrations for Control Room Radiological Habitability Assessments at Nuclear Power Plants (Rev. 0)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1526/ML15268A488.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.194
CFR Part: 
CFR Title: 

Content:
tmospheric Relative Concentrations for Control Room Radiological Habitability Assessments at Nuclear Power Plants." The RG provides guidance on determining atmospheric relative concentration values in support of design basis control room radiological habitability assessments at nuclear power plants, published in June, 2003. As discussed in Management Directive 6.6, "Regulatory Guides," the NRC staff reviews RGs approximately every 5 years to ensure that the RGs continue to provide useful guidance. Documentation of the NRC staff review is enclosed. Based on the results of the periodic review, the staff concludes that no changes to RG 1.194 Revision 0 are warranted at this time. However, the staff identified some technical or regulatory issues in the review that could warrant addressing in a future revision Enclosure: As Stated CONTACT: Ken Erwin, NRO/DSEA (301)-415-7559 DISTRIBUTION: TBoyce, RES KErwin, NRO ARivera-Varona, NRO SBurton ADAMS Accession NO: ML15268A488 OFFICE NRO/DSEA/RMOT RES/DE/RGGIB SUNSI Review NRO/DSEA/RHM2 NRO/DSEA RES/DE/RGGIB NAME K. Erwin S. Burton S. Burton A. Rivera-Varona S. Flanders T. Boyce DATE 09/22/2015 09/28/2015 09/28/2015 09/11/15 09/23/2015 09/24/2015 OFFICIAL RECORD COPY Regulatory Guide Periodic Review Regulatory Guide Number: 1.194 Revision number 0 Title: Atmospheric Relative Concentrations for Control Room Radiological Habitability Assessments at Nuclear Power Plants Office/Division/Branch NRO/DSEA/RMOT Technical Lead: Kenneth Erwin Staff Action Decided: Reviewed with issues identified for future consideration 1. What are the known technical l or regulatory issues with the current version of the Regulatory Guide (RG)? • Section 3.2.4.8 has "horizontal" and "vertical" interposed. These terms related to is determining a x!O va Section 3.2.4.8 has "horizontal" and "vertical" interposed. These terms related to is determining a x!O value for large louvered panels or large openings on vertical walls (e.g., railway doors on BWR Mark