Document: NUREG-0800
Document ID: c766e34e-6ea5-45e7-9123-75964d118447
Document Type: srp
Title: REACTOR CORE ISOLATION COOLING SYSTEM (BWR)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070540102.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.4.6
CFR Part: 
CFR Title: 

Content:
rce below the highest level of the pump discharge lines (e.g., the suppression pool), back leakage through the pump discharge check valves will result in line voiding. Proper vent location and filling and venting procedures therefore are still necessary. In addition, a special keep-full system with appropriate alarms is necessary to supply water to the discharge lines at sufficiently high pressure to prevent voiding. NUREG-0927 provides guidance for water hammer prevention and mitigation. 19. The reviewer confirms that the RCIC system capability is sufficient with respect to the plant’s ability to cope with, and recover from, an SBO of a specified duration by assessing compliance with the SBO Rule. Acceptable ways to confirm RCIC system capability are found in Regulatory Guide 1.155, Positions C.3.2, C.3.3, and C.3.5, as they relate to the design of the RCIC system. This review is coordinated with the review of the SBO event under SRP Section 8.3.1. 20. The reviewer contacts the Mechanical Engineering organization to verify that test results on the steamline containment isolation valves demonstrate that the valves will isolate under expected conditions, as discussed in Supplement 3 to Generic Letter No. 89-10. 21. The reviewer verifies that a leakage reduction program has been implemented and that the program and RCIC system design meet the criteria of action plan item III.D.1.1 of NUREG-0737. 22. The reviewer contacts the Severe Accident and Containment Systems organization to verify that the design of the suppression pool suction strainers, as reviewed in SRP Section 6.2.2, are adequate and satisfy the specified requirements for operation of the RCIC pump. 5.4.6-12 Revision 2 - March 2007 23. The reviewer checks the RCIC pump minimum flow design capacity and minimum flow testing to verify that the flow rate meets the pump manufacturer’s recommendations to prevent pump damage and overheating. The RCIC system uses a steam-driven turbine. Typical design features