Item B-12: Containment Cooling Requirements (Non-LOCA)
DESCRIPTION
The rationale for normal and postaccident containment cooling will be reviewed to determine the adequacy of the design requirements imposed on the containment ventilation systems.
Item B-11: Subcompartment Standard Problems
DESCRIPTION
The calculations of differential pressure that occur in containment subcompartments from a loss-of-coolant event require a complex fluid dynamic analysis
Item B-9: Electrical Cable Penetrations of Containment
DESCRIPTION
Some prototype electrical penetration failures have occurred to date. In addition, failures of low voltage penetration modules have occurred at a licensed facility.
Item B-7: Secondary Accident Consequence Modeling
DESCRIPTION
This NUREG-0471[1]task will develop more reliable models and associated computer capability than currently available to the
Item B-5: Ductility of Two-Way Slabs and Shells and Buckling Behavior of Steel Containments
This item has been divided into two parts which have been evaluated separately.
Item B-4: ECCS Reliability
DESCRIPTION
Numerical reliability goals and methods of analysis have not been established by the NRC.
Item B-3: Event Categorization
DESCRIPTION
There are several inconsistencies in event categorization between the GDC, SRP, Standard Format, and applicant submissions.