Document: NUREG-0800
Document ID: ff35052f-d051-4098-a352-1e382f87365a
Document Type: srp
Title: NUREG-0800
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340655.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6
CFR Part: 
CFR Title: 

Content:
n identified the CSB will request the MEB to evaluate the design adequacy of the components and supports. Modification to the RELAP4 code to include two-phase, two-component mixtures and ice condenser modeling have been made. This will improve the capability of the code for use in short-term response analysis of ice condenser plants. The CSB will use the RELAP4 code to conduct confirmatory analyses. The COMPARE code is also being modified to permit the short term response analysis of ice condenser plants. 4. The CSB reviews the methods, input assumptions, and results of the appli- cant's steam bypass analysis. The applicant's analysis should show con- siderable margin between the maximum tolerable bypass leakage area and the identifiable bypass area required to allow sprat water drainage back to the containment sump. The CSB determines the adequacy of the margins provided for the full spectrum of reactor coolant pipe ruptures. Factors affecting the determination include the proposed inspections and tests to determine bypass leakage area and whether the design of the plant will permit access to seals between the upper and lower compartments for inspection. 5. The CSB reviews the initial programs for ice loading and subsequent veri- fication of individual ice basket and total ice loads. In addition, it reviews'design provisions for monitoring the status of the ice condenser during plant operation to assure that the ice condenser retains its full capability. The CSB also reviews the aspects of the ice condenser design which will allow inspection and functional testing of ice condenser components during various modes of plant operation. Specific areas to be evaluated are the ice condenser temperature instrumentation system, lower inlet door position monitoring system, proposed ice basket inspection programs to determine total ice weight, proposed inspection and testing programs for intermediate and top deck doors, floor drains, lower inlet doors, ice condenser flow