Fast Reactors and Accelerator Driven Systems Knowledge Base

Conference Article: Third shutdown level for EFR project

Favet, D.; Carluec, B. (FRAMATOME Direction NOVATOME, Lyon (France)); Dechelette, S. (Electricite de France, Cedex (France))

Abstract

The presentation described and evaluated a third shutdown level of the EFR project, which has been developed implementing the following four new device systems: a system which terminates the power to the absorber electromagnets after a loss of primary pump electric power supply; a device for control rods drive lines, which passively enhances thermal expansion; a device which overcomes control rod jamming, by motorized insertion of absorber rods, and a mechanical stroke-limitation device, which passively terminates the withdrawal of the faulted control rod.

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key words: control elements; control rod drives; fast reactors; neutron absorbers; reactor shutdown; reliability; safety; thermal expansion
Reference:
Technical committee meeting on absorber materials, control rods and designs of backup reactivity shutdown systems for breakeven cores and burner cores for reducing plutonium stockpiles. Obninsk (Russian Federation). 3-7 Jul 1995
International Atomic Energy Agency, Vienna (Austria)
IAEA-TECDOC--884, pp:169-184