Document: NUREG-0800
Document ID: c400c35a-87e7-4392-950a-36828ff5879f
Document Type: srp
Title: ESF ATMOSPHERE CLEANUP SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340760.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.5.1
CFR Part: 
CFR Title: 

Content:
hat may be released in the event of an accident. ETSB acceptance criteria for the ESF atmosphere cleanup systems are based on meeting the relevant requirements of the following regulations: A. General Design Criterion 19 as it relates to systems being designed for habitability of the control room under accident and LOCA conditions. B. General Design Criterion 41 as it relates to the design of systems to be used for containment atmosphere cleanup following postulated accidents, and to control releases to the environment. C. General Design Criterion 42 and General Design Criterion 43 as they relate to the inspection and testing of containment ESF atmosphere cleanup systems. D. General Design Criterion 61 as it relates to the design of systems for radioactivity control under normal and postulated accident conditions. E. General Design Criterion 64 as it relates to monitoring radioactive releases under normal,.anticipated operational occurrences and postulated accident conditions from ESF atmosphere cleanup systems. Relevant requirements of the Commission's Regulations identified above are met by using the regulatory positions contained in Regulatory Guide 1.52 as it relates to the design testing and maintenance of ESF atmosphere cleanup system air filtration and adsorption units. Specific criteria necessary to meet the relevant requirements of the Commission's regulations are as follows: The ESF atmosphere cleanup systems should be designed so that they can operate after a design basis accident (DBA) and can retain radioactive material after a DBA. The system should have provisions to prefilter air, remove moisture and meet the Regulatory Guide 1.52 requirements for charcoal adsorption. The systems should be redundant, be designed to Seismic Category I requirements, be able to actuate automatically, and be limited to-an air flow rate of approxi- mately 30,000 cfm. Design of instrumentation for ESF atmosphere cleanup systems should conform to the guidelines of