COOLING SYSTEM FOR STORED NUCLEAR FUEL

Title:

COOLING SYSTEM FOR STORED NUCLEAR FUEL

Document Type and Number:

WIPO Patent Application WO/2014/141853

Kind Code:

A1

Abstract:

Provided is a cooling system capable of effectively cooling nuclear fuel stored in a pool and capable of controlling the decrease in the water level due to evaporation. A cooling system for stored nuclear fuel that cools nuclear fuel (3) stored by submerging in a cooling liquid (4) to the bottom of a pool (2), wherein: a top layer formed on the liquid surface (as) side by a low density cooling liquid (4), a bottom layer formed on the bottom of the pool (2) by a cooling liquid (4) having a density higher than the top layer cooling liquid (4), and an intermediate layer formed between the top layer and the bottom layer by a cooling liquid (4) having a density between the density of the top layer cooling liquid (4) and the density of the bottom layer cooling liquid (4) are provided inside the pool (2); a lower end (5a) of a heat pipe (5) that performs heat transfer, as the latent heat of a working fluid, is disposed in a location that exchanges heat with the bottom layer cooling liquid (4), and the upper end (5b) of the heat pipe (5) is exposed to the atmosphere; and the nuclear fuel (3) is submerged in the bottom layer.

Inventors:

MOCHIZUKI MASATAKA (JP)
RANDEEP SINGH (JP)
MATSUDA MASAHIRO (JP)

Application Number:

PCT/JP2014/054117

Publication Date:

September 18, 2014

Filing Date:

February 21, 2014

Export Citation:

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Assignee:

FUJIKURA LTD (JP)

International Classes:

G21C19/07; F28D15/02; G21C19/32; G21F5/10; G21F9/36

Domestic Patent References:

WO2002073099A1	2002-09-19
WO2002073099A1	2002-09-19

Foreign References:

JPS54156998A	1979-12-11
JP2012230079A	2012-11-22
JP2013057578A	2013-03-28
JP2007256230A	2007-10-04
JPH11183695A	1999-07-09
JPS54156998A	1979-12-11
JP2012230079A	2012-11-22
JP2007256230A	2007-10-04

Other References: