Document: NUREG-0800
Document ID: e6b7e6d3-a99d-424d-bfa0-491bc48f46cf
Document Type: srp
Title: ISOLATION CONDENSER SYSTEM (BWR)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0708/ML070810517.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.4.13
CFR Part: 
CFR Title: 

Content:
a SBO. The capability of the ICS to perform this DHR function is reviewed to assure conformance with the requirements of 10 CFR 50.63. The ICS consists of high-pressure, independent loops operating by natural circulation. Each loop contains a heat exchanger that condenses steam on its tube side and transfers heat to water that is contained in a large isolation condenser/passive containment cooling pool (IC/PCC) vented to the atmosphere. The condensed steam returns by gravity to the reactor vessel. The IC/PCC pool is located above and outside the containment. The fuel and auxiliary pools cooling system (FAPCS) replenishes the water in the IC/PCC pool during normal operation. A safety-related, independent FAPCS line provides emergency makeup from the fire protection system or from piping connections located in the yard external to the reactor building. The staff will review the applicant’s safety analysis report (SAR) or design control document (DCD) relating to the ICS. The specific areas of review are as follows: 1. System Design. The review of the ICS includes the system design bases, design criteria, components, support systems, and instrumentation and controls employed in the system. The review also includes process and instrumentation diagrams that describe the automatic and manual use of the ICS to limit RCS pressurization during power operation transients and DHR following reactor isolations during power operations. 2. Testing and Inspections. The reviewer examines the adequacy of the proposed preoperational and initial startup test program. 3. Technical Specifications. The reviewer evaluates the proposed technical specifications to assure that they are adequate with regard to limiting conditions of operation and periodic surveillance testing. 4. Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC). For design certification (DC) and combined license (COL) reviews, the staff reviews the applicant's proposed ITAAC associated with the structures,