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:
, • New hazardous chemicals or radioactive sources introduced onsite or in the vicinity of the plant, • Increases in hazardous chemical or radioactive source quantities, concentrations, locations, or shipments. The primary design function of CRHSs is to protect the public and the control room operator. If the response of the operator is impaired during an accident, there could be increased consequences to the public health and safety. It is important for the operators to be confident of their safety in the control room to minimize errors of omission and commission. The Regulatory Positions below provide methods acceptable to the NRC staff for ensuring the public and the control room operators are protected. When possible, this guide has incorporated guidance contained in NEI 99-03, "Control Room Habitability Assessment Guidance" (Ref. 2). The staff has reviewed this document and has concluded that portions of this document can serve as a valuable resource on CRH. Only the sections of NEI 99-03 that are specifically stated in the Regulatory Position should be considered to be endorsed by the staff. The staff's endorsement of these sections should not be considered an endorsement of the remainder of NEI 99-03 nor any other document referenced in NEI 99-03. C. REGULATORY POSITION 1. GENERAL CONSIDERATIONS 1.1 Overview of the Process of Demonstrating and Maintaining CRH In demonstrating that a facility's CRE conforms to the GDCs, the following CRH aspects are typically assessed. • Radiological doses • Protection from the effects of hazardous materials • Control of the reactor from either the control room or the alternate shutdown panel. The process of demonstrating the above three aspects includes the following actions: 3 As used in this guide, the licensing basis is the documentation that describes how the plant meets applicable regulations. Design bases are defined in 10 CFR 50.2. Regulatory Guide 1.186, “Guidance and Examples for Identifying 10 CFR 50.2