ИСТИНА

Antineutrino emission of a nuclear reactor core carries information about the intensity of nuclear fuel burn-up including the fission of uranium isotopes and accumulation of Pu239 and Pu241. The idea to use remote monitoring of the reactor core by neutrino radiation was first proposed and then experimentally confirmed at the Kurchatov Institute in experiments at the Rovno nuclear power plant. Neutrino monitoring method has been recognized by the IAEA experts as possible method to guarantee non-proliferation of nuclear materials. Recent advances in technology for the detection of reactor antineutrino via inverse beta decay reaction in liquid organic scintillators let get to the wide practical use this method in few large scale scientific fundamental experiments – Daya Bay, RENO, Double CHOOZ. But the introduction of the proposing method and instrument to the official regulation of the nuclear power plant is only possible if industry-style detector will be developed instead of scientific-research detector. Such detector should be compact, simple and not expensive in production, highly reliable, safe in operation and ready for autonomous unattended operation during the reactor campaign. The first prototype of industrial antineutrino detector for remote control of the reactor power and the confirmation of the declared levels of nuclear fuel irradiation is under final assembling now and will be ready for physical start up at the beginning of the 2014. The antineutrino flux will be detected by the inverse beta decay reaction in 1 m3 of stable fire safe gadolinium doped liquid organic scintillator. PMT are used as the sensing elements. Passive and active shielding are used to decrease the backgrounds. The estimated total volume of the detector is 8-9 m3 including control and DAQ electronic. The detector construction should ensure a possibility to detect a reactor stop in 2-3 hours with 99% probability when the distance of installation is 10-20 m from a reactor core.