CONTROL PROCESS FOR A REACTOR BELOW CRITICAL LEVEL (in French)
Journal Article
·
· Onde elec.
OSTI ID:4233262
The knowlege of the subcritical state of a reactor in the course of starting up makes it possible to avoid passing too quickly through the critical state. The problem arises every time the pile is put into action again following, for example, an appreciable modification in the fuel charge or a stop during a run at high power. The method described provides a means of knowing at each instant the antireactivity value of the pile by means of a direct-reading instrument mounted on the control board. This result is obtained by oscillating reactivity at fixed frequency and reading on a phasemeter the phasing of the neutron density. Theory shows, and experiments confirm that for a given frequency the phasing depends only on the lifetime of the prompt neutrons, the characteristics of the delayed neutrons, and the antireactivity of the reactor. (auth)
- Research Organization:
- Centre d'Etudes Nucleaires, Saclay, France
- NSA Number:
- NSA-14-002176
- OSTI ID:
- 4233262
- Journal Information:
- Onde elec., Journal Name: Onde elec. Vol. Vol: 38
- Country of Publication:
- Country unknown/Code not available
- Language:
- French
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