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:
the LOTIC-1 code which is used to determine the containment pressure and temperature response, and has determined that the code is acceptable for containment analysis. The CSB assures that the LOTIC-1 code has been used and that the input assumptions to the code are conservative. Code revisions and improvements will also be considered. The CSB reviews the analysis of the containment temperature and pressure response to postulated secondary system pipe ruptures. The NRC staff has reviewed the LOTIC-3 code and has determined that it is acceptable for the calculation of ice condenser containment analysis for steam line break accidents. The CSB assures that the LOTIC-3 code has been used and that plant-sensitive input assumptions used in the analysis of the containment response are conservative. CSB determines from the results of analyses of postulated loss-of-coolant accidents and secondary system pipe ruptures that the peak calculated 6.2.1.1.B-5 Rev. 2 - July 1981 containment pressure does not exceed the design pressure of the contain- ment, for plants at the operating license stage of review. For plants at the construction permit stage of review, the CSB will ascertain from the results of analyses reported in the safety analysis report that the design pressure provides a margin of at least 20% above the maximum calculated pressure. Upon request of the EQB, the CSB will (a) determine the maximum temperature transients calculated for postulated loss-of-coolant accidents and secondary system pipe ruptures have been considered in establishing the environmental qualification requirements for equipment and components required to mitigate the consequences of loss-of-coolant accidents and secondary system pipe ruptures, respectively; and (b) review the analytical methods and assumptions used in the thermal analysis, if thermal analysis is used to establish the qualification of instrumentation and components for use in superheated steam environments. The CONTEMPT-4 code is