Document: NUREG-0800
Document ID: 72755eb7-49f0-4442-a13a-2e990c4e3733
Document Type: srp
Title: EQUIPMENT AND FLOOR DRAINAGE SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350554.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.3.3
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Auxiliary Systems Branch (ASB) Secondary - None I. AREAS OF REVIEW The equipment and floor drainage system (EFDS) is designed to assure that waste liquids, valve and pump leakoffs, and tank drains are directed to the proper area for processing or disposal. The ASB reviews the equipment and floor drainage system, including the collection and disposal of liquid effluents outside contain- ment. This includes piping and pumps from equipment or floor drains to the sumps, and any additional equipment that may be necessary to route effluents to the drain tanks and then to the radwaste system. 1. The ASB reviews the EFDS capability to collect and dispose of all waste liquid effluents so that they will be processed in a controlled and safe manner. ASB will determine that: a. The system is capable of handling the volume of leakage expected, includ- ing the capacities of the sumps, drain tanks, and sump pumps. b. The system is capable of preventing a backflow of water that might result from maximum flood levels to areas of the plant containing safety-related equipment. c. There is no potential for inadvertent transfer of contaminated fluids to a non-contaminated drainage system. 2. ASB also performs the following reviews under the SRP section indicated: a. Review of flood protection is performed under SRP Section 3.4.1, Rev. 2 - July 1981 USNRC STANDARD REVIEW PLAN Standard review plans are prepared for the guidance of the Office of Nuclear Reactor Regulation staff responsible for the review of applications to construct and operate nuclear power plants. These documents are made available to the public as part of the Commission s policy to Inform the nuclear Industry and the general public of regulatory procedures and policies. Standard review plans are not substitutes for regulatory guides or the Commission's regulations and compliance with them is not required. The standard review plan sections are keyed to the Standard Format and Content of