Document: NUREG-0800
Document ID: 1c401e6c-8c2d-47df-b05f-2978939cbd15
Document Type: srp
Title: CONTROL ROOM HABITABILITY SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550069.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.4
CFR Part: 
CFR Title: 

Content:
ified limits in the event of an accident or toxic gas release, thereby ensuring that control room operators and essential equipment in the control room will be able to continue functioning effectively throughout the course of the event. In this manner, an event at one unit will be prevented from propagating to another unit. Meeting the requirements of GDC 5 provides assurance that a failure in one unit of a multiple-unit site will not affect an orderly shutdown and cooldown in remaining units. 3. Compliance with GDC 19 requires provision of a control room from which actions can be taken (a) to operate the nuclear power unit safely under normal conditions and (b) to maintain the plant in a safe state under accident conditions, including LOCAs. GDC 19 applies to this SRP section because the reviewer verifies that adequate radiation protection and protection from hazardous chemical releases will be provided to permit access to and occupancy of the control room under accident conditions. Regulatory Guides 1.52 and 1.78 present methods acceptable to the staff for meeting control room occupancy protection requirements. Regulatory Guides 1.195, 1.196 and 1.197 provide acceptable guidance for meeting control room habitability requirements. For future reactors or for plants implementing an alternate source term (AST) pursuant to 10 CFR 50.67, the guidance on dose analysis of Regulatory Guide 1.183 is applicable in place of Regulatory Guide 1.195. Meeting the requirements of GDC 19 provides assurance that adequate protection will be maintained to permit access to and occupancy of the control room under accident conditions. 4. Compliance with 10 CFR 50.34(f)(2)(xxviii) requires the evaluation of potential pathways for radioactive materials that may lead to problems related to control room habitability under certain accident conditions; it also requires making necessary design provisions to preclude such problems. The requirements of 10 CFR 50.34(f)(2)(xxviii) apply to this SRP