Heat transfer and fluid flow aspects of fuel--coolant interactions. [LMFBR]
A major portion of the safety analysis effort for the LMFBR is involved in assessing the consequences of a Hypothetical Core Disruptive Accident (HCDA). The thermal interaction of the hot fuel and the sodium coolant during the HCDA is investigated in two areas. A postulated loss of flow transient may produce a two-phase fuel at high pressures. The thermal interaction phenomena between fuel and coolant as the fuel is ejected into the upper plenum are investigated. A postulated transient overpower accident may produce molten fuel being released into sodium coolant in the core region. An energetic coolant vapor explosion for these reactor materials does not seem likely. However, experiments using other materials (e.g., Freon/water, tin/water) have demonstrated the possibility of this phenomenon.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge (USA). Dept. of Nuclear Engineering
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- EY-76-S-02-2781
- OSTI ID:
- 6447603
- Report Number(s):
- COO-2781-12TR
- Country of Publication:
- United States
- Language:
- English
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Mon Sep 01 00:00:00 EDT 1980
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Coolant boiling in the beginning-of-life core during overpower excursions. [LMFBR]
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Internal fuel motion in annular fuel as an inherent safety shutdown mechanism during hypothetical LMFBR accidents
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Thu Dec 31 23:00:00 EST 1981
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