Power-independent cooling system for a high-power research reactor

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by

Vitaly Uzikov, Lead Ingeeneer, JSC “SSC RIAR” (Russian Federation)
Irina Uzikova, Nuclear Safety Engineer, Assystem E&OS (France)

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Abstract
This paper presents the results of the analysis of a universal system for cooling of the research reactors core. The cooling system based on the passive principle of natural convection of the coolant. This cooling system develops the concept of a reactor plant presented in [1]. This Chapter presents à three-dimensional model, technological and design diagrams of a reactor unit. The examples of the numerical assessment of transients during operation in normal and accident modes are shown to substantiate the possibility of using such system in research reactors of medium and high power, providing a neutron flux of more than 1 × 1015 cm-2/s.
A fundamental feature of the presented passive heat removal system is the absence of active elements in the cooling circuits, such as circulation pumps, shut-off and control valves, as well as the presence of an intermediate circuit with a non-radioactive coolant, made according to the principle of operation of a heat pipe (thermic syphon). Such design excludes the release of the radioactive coolant into the surrounding environment for any depressurization of the circuits. The cooling circuits include only vessels, piping and heat exchangers. The absence of elements with mechanical moving parts can significantly reduce the equipment failures probability and increase the reliability of the cooling system while reducing its cost.
The versatility of the proposed system allows using it for different reactor plants of a wide power range, designed for various nuclear research areas.
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6 comments to Power-independent cooling system for a high-power research reactor

  • Andrea Rossi

    bobclam:
    What you say is obvious. We use that power source also for other works.
    Warm Regards,
    A.R.

  • bobclam

    Dear Dott Rossi,

    to do 9th december demonstration, you have used a standard AC-DC 12V power
    supply able to deliver 9A, in continus ouput mode (yellow stick on the front),
    so more than 100W output power, exact ?

    (this kind of power supply seems avaibale on “Alibaba”)

    why a so big powerful, the power input of the SKLEP being less than 1W
    AI controler included ?

    A simple and small ACDC adapter of standard PC should be largely enough
    (I have a new ASUS PC, and the AC adapter, 19v-2.9A , took place in my hand).

  • Andrea Rossi

    bobclam:
    As I repeated many times, we will give assistance to the clients just before the deliveries, depending on their specific situations.
    Anyway, the units will be supplied by the necessary manuals and the connection of units is very simple, just plug several cables that don’t fit if you try to plug them in the wrong connection.
    Warm Regards,
    A.R.

  • bobclam

    Good morning dott Rossi,

    .1 you are considering the eletrical connection between the blue box
    (ECAT reactor)and the black one (AI controller)like a part of your IP, this is ok,
    but it seems you are also considering the physical interconnection
    between them, in series an paralel assembly, like your IP, exact ?

    Something is ambigous when you don’t want to indicate how to make the
    interconnection on data public specifications appearing on your ecat.com site.

    When i order IC’s i dont know their inside secret technology ,
    but i know what they do and how to interconnect them, before to order.

    2 i think to use a complete SKLep (1 Blue box + 1 black box) with AC input,
    need an extra module: the 12VDC power source from the grid, included in the
    pack delivered by Leonardo.corp, so, i have to interconnect three modules, am i right?.

  • Andrea Rossi

    Richard Fox:
    1. months
    2. 100-200000
    Warm Regards,
    A.R.

  • Richard Fox

    Dr. Rossi,

    I have ordered a number of your SKLep units. I understand that you will commence manufacturing them once the number of units ordered exceeds one million units. Can you now project:
    1. how long it will take to begin shipping these units to customers once the million orders threshold is reached, and
    2. the number of units that you expect to ship each month over the first few months once you begin shipments?
    Thanks,

    Richard Fox
    Los Gatos, CA, USA

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