Document: NUREG-0800
Document ID: 667d1b37-702c-4e8d-93da-886dbb7a679f
Document Type: srp
Title: d.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070304.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.2.2.30
CFR Part: 
CFR Title: 

Content:
The reviewer will select and emphasize material from the paragraphs below as may be appropriate for a particular case. The reviews of flood elevations and other hydrologic considerations pertinent to protection of SSCs important to safety, including the underground drainage system, are performed by HGEBECGB as part of its primary responsibility for SRP Sections 2.4.1 through 2.4.14. For a 42 standard design certification, ECGB reviews postulated site flooding parameters as part of its primary responsibility for SRP Section 2.3.6.43 Upon request from the primary reviewer, the coordinating review branches will provide input for the areas of review stated in subsection I of this SRP section. The primary reviewer obtains and uses such input as required to assureensure that this review procedure is complete. 44 The review procedure consists of: 1. A determination from the SAR as to which SSCs are safety related and should be protected against floods or flooded conditions. 2. An evaluation using the plant arrangement and layout drawings as to the various means to prevent flooding of safety-related systems or components, such as external barriers, enclosures, pumping systems, and watertight doors. The measures utilized are reviewed and coordinated with HGEBECGB to determine their ability to cope with the design 45 basis flood conditions, as established in SRP Sections 2.4.1 through 2.4.14. 3. An assessment of leakage, a determination if liquid-carrying systems could produce flooding, and an evaluation of the measures taken to protect safety-related equipment. The effects of piping failures are considered in SRP Sections 3.6.1 and 3.6.2. The 46 effects of potential flooding of SSCs due to postulated failure of nonseismic Category I and non-tornado protected tanks, vessels, and other process equipment is are considered 47 in this SRP section. The applicant's risk assessment of external and internal flooding submitted as required by 10 CFR 52.47(a)(1)(v) for a design