Abstract
The paper deals with design of new SCRAM experimental device at Training reactor VR-1. Crucial works cowers the detector development, transient calculations and principal design of the device. Conceptual design will be prepared in 2019–2020. This paper presents current work status.
Highlights
One of the crucial aspects of nuclear power plant operation is the immediate and safe stop of the nuclear chain reaction if needed, i.e. SCRAM
Clear understanding of the SCRAM mechanism, i.e. control rod drop to the core, and consequent evolution of neutron flux, is still important even though nuclear power plants have been in commercial operation for five decades
A new project at the VR-1 reactor was launched in 2017: development of new SCRAM experimental device which can be used for verification of theoretical calculations and computer modeling of SCRAMs at nuclear power plants and research reactors
Summary
One of the crucial aspects of nuclear power plant operation is the immediate and safe stop of the nuclear chain reaction if needed, i.e. SCRAM. Theoretical calculations and computer modelling of reactor operational states, including transients, should be verified by experiments. Research reactors are suitable nuclear installations for carrying out verification experiments for many operational states of nuclear power plants. 1-2 s (due to low pressure, temperature and coolant flow) distance between top and bottom position of control rod is ca 50-100 cm This is why particular experimental control rods with on-line measurement of rod position during SCRAM should be developed as well as a new generation of neutron detectors (small, very sensitive with fast response and at a reasonable price). A new project at the VR-1 reactor was launched in 2017: development of new SCRAM experimental device which can be used for verification of theoretical calculations and computer modeling of SCRAMs at nuclear power plants and research reactors. The paper presents some results from SCRAM experiments carried out at the VR-1 reactor which are used for the conceptual design and detail of the SCRAM experimental device
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