Document: NUREG-0800
Document ID: 010ad62f-cd7b-4f06-9f81-a781faf5701b
Document Type: srp
Title: ENGINEERED SAFETY FEATURE VENTILATION SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070560.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.4.5
CFR Part: 
CFR Title: 

Content:
.3 (proposed) contains procedures for the review of certified design material (CDM) for the standard design, including the site parameters, interface criteria, and ITAAC.62 IV. EVALUATION FINDINGS The reviewer verifies that sufficient information has been provided and that his review supports conclusions of the following type, to be included in the staff's safety evaluation report: The engineered safety feature ventilation system (ESFVS) includes all components and ducting associated with the system from air intake to the point of discharge to the atmosphere. All portions of the system whose failure may result in release of radioactivity which causes an offsite dose of more than 5 mSv (0.5 rem) to the whole 63 body or its equivalent to any part of the body are classified seismic Category I and safety related. Based on the review of the applicant's proposed design criteria, design bases, and safety classification for the engineered safety feature ventilation system, and the requirements for system performance to preclude equipment malfunction in the engineered safety feature areas due to a failure of the system during normal, abnormal, and accident conditions, the staff concludes that the design of the engineered safety feature ventilation system and supporting systems is acceptable and meets the Commission's regulations as set forth in General Design Criteria 2, 4, 5, 17, and 60 and 10 CFR 50.63.64 This conclusion is based on the following: 1. The applicant has met the requirements of GDC 2 with respect to the system being capable of withstanding the effects of earthquakes by meeting the guidelines of Regulatory Guide 1.29, "Seismic Design Classification," position C.1, for safety-related portions of the system and position C.2 for nonsafety-related portions of the system. 9.4.5-13 DRAFT Rev. 3 - April 1996 2. The applicant has met the environmental requirements of GDC 4 by appropriately addressing adverse environmental conditions and dynamic effects in the design