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Title: Technical Issues Associated with Air Ingression During Core Degradation

Abstract

This paper has shown that it is possible to get significant air intrusion into a ruptured reactor vessel even from a reactor cavity with restricted access. This suggests that there is some importance to considering the consequences of air intrusion following vessel penetration by core debris. The consequences will depend on the nature of core degradation in air and other oxidizing gases. If, indeed, fuel becomes exposed to strongly oxidizing gases, significant releases of ruthenium and hexavalent urania can be expected. Hexavalent urania could alter the nature of cesium release and cesium revaporization from the reactor coolant system. Hexavalent urania could destabilize CSI and enhance the formation of gaseous iodine unless there are other materials that will react readily with atomic iodine along the flow path to the reactor containment.

Authors:
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
761841
Report Number(s):
SAND2000-1935C
TRN: US0005312
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: PHEBUS-FP Technical Information Seminar 2000, Marseilles (FR), 03/20/2000--03/24/2000; Other Information: PBD: 5 Jun 2000
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; AIR; CESIUM; CONTAINMENT; COOLANTS; GASES; IODINE; REACTOR VESSELS; RUTHENIUM

Citation Formats

POWERS,DANA A. Technical Issues Associated with Air Ingression During Core Degradation. United States: N. p., 2000. Web.
POWERS,DANA A. Technical Issues Associated with Air Ingression During Core Degradation. United States.
POWERS,DANA A. Mon . "Technical Issues Associated with Air Ingression During Core Degradation". United States. https://www.osti.gov/servlets/purl/761841.
@article{osti_761841,
title = {Technical Issues Associated with Air Ingression During Core Degradation},
author = {POWERS,DANA A.},
abstractNote = {This paper has shown that it is possible to get significant air intrusion into a ruptured reactor vessel even from a reactor cavity with restricted access. This suggests that there is some importance to considering the consequences of air intrusion following vessel penetration by core debris. The consequences will depend on the nature of core degradation in air and other oxidizing gases. If, indeed, fuel becomes exposed to strongly oxidizing gases, significant releases of ruthenium and hexavalent urania can be expected. Hexavalent urania could alter the nature of cesium release and cesium revaporization from the reactor coolant system. Hexavalent urania could destabilize CSI and enhance the formation of gaseous iodine unless there are other materials that will react readily with atomic iodine along the flow path to the reactor containment.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {6}
}

Conference:
Other availability
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