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:
as served by the ESFVS for the duration of a station blackout event and the associated recovery period with or without credit for ESFVS operation, as applicable. Where applicable, the functionality of equipment necessary to cope with the event under the expected environmental conditions and the habitability of areas where operator actions are performed should be appropriately addressed during the review as described in DRAFT Rev. 3 - April 1996 9.4.5-12 Regulatory Guide 1.155, position C.3.2.4. Where portions of the ESFVS are credited to function for station blackout, the reviewer verifies that the ESFVS has been designed so that system functions will be performed as required in the event of a station blackout, that the ESFVS has sufficient capacity and capability to maintain a suitable environment for the duration of a station blackout event and the associated recovery period, and that failure of non-required portions of the ESFVS will not adversely affect the functioning of required equipment. As necessary, the reviewer interfaces with HICB and EELB reviewers as described in subsection I to evaluate the instrumentation and electrical provisions for ESFVS functionality in the event of a station blackout and also to ensure that appropriate instrumentation and electrical equipment environmental limits have been considered.61 For standard design certification reviews under 10 CFR Part 52, the procedures above should be followed, as modified by the procedures in SRP Section 14.3 (proposed), to verify that the design set forth in the standard safety analysis report, including inspections, tests, analysis, and acceptance criteria (ITAAC), site interface requirements and combined license action items, meet the acceptance criteria given in subsection II. SRP Section 14.3 (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