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:
effluents require a treatment different from that for nonradioactive effluents, the EFDS design typically provides for two separate systems, one for collecting radioactive and the other for collecting non-radioactive 9.3.3-6 Revision 3 - March 2007 effluents. GDC 60 requirements assure containment of radioactive liquid effluents by controlled collection and transfer to appropriate treatment systems. III. REVIEW PROCEDURES The reviewer will select material from the procedures described below, as may be appropriate for a particular case. These review procedures are based on the identified SRP acceptance criteria. For deviations from these acceptance criteria, the staff should review the applicant’s evaluation of how the proposed alternatives provide an acceptable method of complying with the relevant NRC requirements identified in Subsection II. 1. The SAR is reviewed for whether the EFDS description section, layout drawings, and piping and instrumentation diagrams (P&IDs) show the EFDS layout and equipment, including pumps and valves necessary for routing effluents, the minimum drain tank capacity system flow requirements, connections to areas with safety-related equipment or to noncontaminated drain systems, and any EFDS leakage detection for safety-related systems. The reviewer uses the following to determine whether EFDS portions are safety-related: A. If the system is capable of detecting leaks in safety systems that utilize the drainage system sumps and is the only means for such leakage detection, it is safety-related for this purpose. B. If the system can result in the inundation of safety-related areas due to drain backflow from malfunction of active components, blockage, or the probable maximum flood, it is safety-related in this area. C. If the system is connected so that an inadvertent transfer of contaminated fluids to noncontaminated drainage systems can occur, it is safety-related in this area. D. If a failure or malfunction in a portion of the system