Insights on severe accident chemistry from TMI-2

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

OSTI ID:5911523

Hobbins, R R; Cronenberg, A W; Langer, S; Owen, D E; Akers, D W

Chemical analyses are being carried out on materials removed from the damaged reactor at TMI-2. Characteristics of TMI-2 fuel, control, fission product and structural materials based on these analyses are presented. Emphasis is placed on chemistry within the pressure vessel although descriptions of, and postulated mechanisms for, materials transported from the vessel to the reactor building are also discussed. Indications of the oxygen potential in the reactor pressure vessel during the high temperature phase of the accident are of particular significance for the analysis of damage progression and fission product behavior during severe accidents. The results of thermodynamic and kinetic calculations for chemical species present during the high temperature portion of the accident (during core uncovery) are presented. Insights on chemistry of significance for severe accident analysis which follow from the evaluation of the TMI-2 accident are discussed. 38 refs., 9 figs., 2 tabs.

• Research Organization: EG and G Idaho, Inc., Idaho Falls (USA); ESA, Inc., Idaho Falls, ID (USA); Owen (D.E.), Hummelstown, PA (USA)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 5911523
• Report Number(s): EGG-M-27786; CONF-860911-30; ON: DE88001499
• Country of Publication: United States
• Language: English

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