Integrated analysis of core debris interactions and their effects on containment integrity using the CONTAIN computer code

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:5578092

Carroll, D E; Tills, J L; Valdez, G D; Bergeron, K D; Williams, D C

The CONTAIN computer code includes a versatile system of phenomenological models for analyzing the physical, chemical and radiological conditions inside the containment building during severe reactor accidents. Important contributors to these conditions are the interactions which may occur between released corium and cavity concrete. The phenomena associated with interactions between ejected corium debris and the containment atmosphere (Direct Containment Heating or DCH) also pose a potential threat to containment integrity. In this paper, we describe recent enhancements of the CONTAIN code which allow an integrated analysis of these effects in the presence of other mitigating or aggravating physical processes. In particular, the recent inclusion of the CORCON and VANESA models is described and a calculational example presented. With this capability CONTAIN can model core-concrete interactions occurring simultaneously in multiple compartments and can couple the aerosols thereby generated to the mechanistic description of all atmospheric aerosol components. Also discussed are some recent results of modeling the phenomena involved in Direct Containment Heating. 14 refs.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5578092
• Report Number(s): SAND-86-0025C; CONF-860507-6; ON: TI86010994
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220900* -- Nuclear Reactor Technology-- Reactor Safety
C CODES
COMPUTER CODES
CONTAINMENT
CONTAINMENT SYSTEMS
CORIUM
ENGINEERED SAFETY SYSTEMS
SYSTEMS ANALYSIS