Station blackout at Browns Ferry Unit One: iodine and noble-gas distribution and release
This is the second volume of a report describing the predicted response of Unit 1 at the Browns Ferry Nuclear Plant to a postulated Station Blackout, defined as a loss of offsite power combined with failure of all onsite emergency diesel-generators to start and load. The Station Blackout is assumed to persist beyond the point of battery exhaustion and the completely powerless state leads to core uncovery, meltdown, reactor vessel failure, and failure of the primary containment by overtemperature-induced degradation of the electrical penetration assembly seals. The sequence of events is described in Volume 1; the material in this volume deals with the analysis of fission product noble gas and iodine transport during the accident. Factors which affect the fission product movements through the series of containment design barriers are reviewed. For a reactive material such as iodine, proper assessment of the rate of movement requires determination of the chemical changes along the pathway which alter the physical properties such as vapor pressure and solubility and thereby affect the transport rate. A methodology for accomplishing this is demonstrated in this report.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5083431
- Report Number(s):
- NUREG/CR-2182-Vol.2; ORNL/NUREG/TM-455-Vol.2; ON: DE82022012
- Resource Relation:
- Other Information: Portions of document are illegible
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
BROWNS FERRY-1 REACTOR
ELECTRIC POWER
FISSION PRODUCT RELEASE
LOSS OF FLOW
MELTDOWN
RADIOACTIVITY TRANSPORT
ACTIVITY LEVELS
CONTAINMENT SYSTEMS
FAILURES
IODINE
RADIOACTIVE AEROSOLS
REACTOR SAFETY
ACCIDENTS
AEROSOLS
BWR TYPE REACTORS
COLLOIDS
CONTAINMENT
DISPERSIONS
ELEMENTS
ENGINEERED SAFETY SYSTEMS
ENRICHED URANIUM REACTORS
HALOGENS
MIXED SPECTRUM REACTORS
NONMETALS
POWER
POWER REACTORS
REACTOR ACCIDENTS
REACTORS
SAFETY
SOLS
WATER COOLED REACTORS
WATER MODERATED REACTORS
220900* - Nuclear Reactor Technology- Reactor Safety
210100 - Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled