Document: NRC Regulatory Guide
Document ID: 4be414ec-2258-461b-b93f-e2ed0e307dd2
Document Type: regulatory_guide
Title: Demonstrating Control Room Envelope Integrity at Nuclear Power Reactors
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1511/ML15117A117.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.197
CFR Part: 
CFR Title: 

Content:
avrilas LKokajko DATE 4/ 28 /2015 4/30/2015 4/2/2015 5/1/2015 5/1/2015 5/6/2015 OFFICIAL RECORD COPY ENCLOSURE Regulatory Guide Periodic Review Regulatory Guide Number: 1.197 Revision number: 0 Title: Demonstrating Control Room Envelope Integrity at Nuclear Power Reactors Office/division/branch: NRR/DSS/SCVB Technical Lead: Nageswara Karipineni Staff Action Decided: Reviewed with no issues identified 1. What are the known technical or regulatory issues with the current version of the Regulatory Guide (RG)? RG 1.197, “Demonstrating Control Room Envelope Integrity at Nuclear Power Reactors,” published in May 2003. The RG provides an approach acceptable to the NRC staff for measuring inleakage into the control room and associated rooms and areas at nuclear power reactors. The amount of inleakage is an input to the design of the control room, and periodic verification of the inleakage provides assurance that the control room will be habitable during normal and accident conditions. This guide provides guidance on methods acceptable to the staff for determining control room envelope integrity for the purpose of confirming that the reactor meets General Design Criterion-19. No technical or regulatory issues were identified. 2. What is the impact on internal and external stakeholders of not updating the RG for the known issues, in terms of anticipated numbers of licensing and inspection activities over the next several years? Not applicable. 3. What is an estimate of the level of effort needed to address identified issues in terms of full-time equivalent (FTE) and contractor resources? Not applicable. 4. Based on the answers to the questions above, what is the staff action for this guide (Reviewed with no issues identified, Reviewed with issues identified for future consideration, Revise, or Withdraw)? Not applicable. -2- 5. Provide a conceptual plan and timeframe to address the issues identified during the review. Not applicable. NOTE: This review was conducted in