Secondary- None

At the construction permit (CP) stage of review, ETSB reviews the information in the applicant's safety analysis report (SAR) in the areas listed below. At the operating license (OL) stage, the ETSB review consists of confirming the design accepted at the CP stage and evaluating the adequacy of the applicant's technical specifications in these areas. The specific ETSB review areas are as follows: 1. The engineered safety feature (ESF) atmosphere cleanup systems designed for fission product removal in post-accident environments. These generally include primary systems, such as in-containment recirculation, and secondary systems, such as standby gas treatment systems and emergency or post accident air cleaning systems for the fuel handling building, control room, shield building and areas containing engineered safety feature components. 2. The system design, design objectives and design criteria. The ETSB reviews the methods of operation and the factors that could influence the filtration capabilities of the system, e.g., system interfaces and potential bypass routes. The components included in each atmospheric cleanup system and the seismic design category of each system are reviewed. Redundancy of the atmosphere cleanup systems, the physical separation of the redundant trains, and the volumetric air flow rate of each train are reviewed. 3. The environmental design criteria, the design pressure and pressure differential, relative humidity, maximum and minimum temperature, and radiation source term. 4. The component design criteria, qualification requirements, and qualification testing of heaters, demisters, prefilters, and high-efficiency particulate air (HEPA) filters, design requirements of the filter and adsorber mountin