Document: NUREG-0800
Document ID: 591967ba-e3de-4621-8628-375311695d02
Document Type: srp
Title: REACTOR COOLANT PRESSURE BOUNDARY LEAKAGE DETECTION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070422.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.2.5
CFR Part: 
CFR Title: 

Content:
r. 6. The reviewer verifies that the sensitivity and response of the detection system is acceptable over the entire range of expected plant operating conditions of which it is monitoring. The reviewer verifies that the instrumentation and methodology used to determine leak rates are adequate. 7. The reviewer determines that the radiation monitoring systems have a radioactive source built into the system (the SAR refers to this feature as a "check source") to permit operability testing and calibration during operation. The reviewer determines that provisions are made to test and calibrate the sump level detection system. He also determines that a method for calibrating the air cooler condensate flow system exists, wherever the radiation monitors are used, and that a method to calibrate them to RCPB leakage exists. The frequency of testing and calibration should be provided and justified. The reviewer also determines that periodic testing of the floor drainage system will be performed to check for blockage and ensure operability. For standard design certification reviews under 10 CFR Part 52, the procedures above should be followed, as modified by the procedures in SRP Section 14.3 (proposed), to verify that the design set forth in the standard safety analysis report, including inspections, tests, analysis, and acceptance criteria (ITAAC), site interface requirements and combined license action items, meet the acceptance criteria given in subsection II. SRP Section 14.3 (proposed) contains procedures for the review of certified design material (CDM) for the standard design, including the site parameters, interface criteria, and ITAAC.24 IV. EVALUATION FINDINGS The reviewer verifies that sufficient information has been provided and his review supports conclusions of the following type, to be included in the staff's safety evaluation report: The reactor coolant pressure boundary (RCPB) leakage detection system provides reliable monitoring of reactor coolant leakage from