Document: NUREG-0800
Document ID: 92e07546-68d7-4c8e-a984-7d1f1f4d882d
Document Type: srp
Title: EQUIPMENT AND FLOOR DRAINAGE SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550042.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.3.3
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Organization responsible for the review of cooling water systems Secondary - None I. AREAS OF REVIEW The equipment and floor drainage system (EFDS) is designed to ensure that waste liquids, valve and pump leak-offs, and tank drains are directed to proper areas for processing or disposal, and that excessive water accumulation and flooding is prevented in accordance with plant design basis. Review of the EFDS includes design features that are necessary for collecting, routing, and disposing of liquid effluents outside containment. This includes piping and pumps from equipment or floor drains to the sumps, drain tanks, devices that are credited with preventing reverse flow, and any additional equipment necessary to route effluents to the drain tanks and then to the liquid waste management system or other points of discharge. The specific areas of review are as follows: 1. Leakage detection capability that is relied upon for identifying conditions that are adverse to safety, such as excessive leakage that could compromise the capability of structures, systems or components (SSCs) to perform safety functions or could result in uncontrolled release of radioactive material to the environment. 9.3.3-2 Revision 3 - March 2007 2. System features that are relied upon to prevent flooding due to drain backflow that may result from malfunction of active components, blockage, or the probable maximum flood, which could affect a SSC that is important to safety. 3. System features that are relied upon to prevent an inadvertent transfer of contaminated fluids to non-contaminated drainage systems or to otherwise prevent uncontrolled releases of radioactive material to the environment. 4. System features, a failure or malfunction of which could result in adverse effects on an SSC important to safety, or could result in uncontrolled release of radioactive material to the environment. 5. Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC). For