Apparatus for dismantling for heavy water reactor facilities

Patent metadata

Field	Value
Publication number	US-11717902-B2
Application number	US-202017423204-A
Country	US
Kind code	B2
Filing date	Jan 8, 2020
Priority date	Jan 18, 2019
Publication date	Aug 8, 2023
Grant date	Aug 8, 2023

Abstract

An exemplary embodiment of the present invention provides an apparatus for dismantling for heavy water reactor facilities, including: a cutting device configured to divide a calandria of the heavy water reactor facilities into a main shell and a sub-shell; and a transfer device configured to draw the main shell cut by the cutting device to the outside, wherein the transfer device includes a fixing unit configured to fix the calandria; and a transfer unit configured to transfer the fixing unit.

First claim

The invention claimed is:

1. An apparatus for dismantling for heavy water reactor facilities, the apparatus comprising:
a cutting device configured to divide a calandria of the heavy water reactor facilities into a main shell and a sub-shell; and
a transfer device configured to draw the main shell cut by the cutting device to an outside, wherein:
the transfer device includes:
a fixing unit configured to hold the calandria; and
a transfer unit configured to transfer the fixing unit,
wherein the fixing unit includes a plurality of support portions including a first support portion and a second support portion facing the first support portion, the first support portion and the second support portion configured to hold the calandria,
wherein the transfer unit includes a first rail portion coupled to the first support portion and a second rail portion coupled to the second support portion,
wherein the first rail portion and the second rail portion are disposed on different axes and configured to be installed at both ends of the calandria, and
wherein the first support portion moves along the first rail portion, and the second support portion moves along the second rail portion.

2. The apparatus of claim 1 , wherein:
the fixing unit includes:
a plurality of joint portions connecting the plurality of support portions to each other, and
the plurality of support portions configured to surround the calandria using the joint portions to hold the calandria.

3. The apparatus of claim 2 , wherein:
the transfer unit includes
a rail groove formed in each of the first rail portion and the second rail portion.

4. The apparatus of claim 1 , wherein:
the cutting device includes:
a cutting unit configured to move along a pressure tube through portion formed in an end shield of the calandria to cut a connection portion between the main shell and the sub-shell; and
a movement adjusting unit configured to adjust movement of the cutting unit.

5. The apparatus of claim 4 , wherein:
the cutting unit includes:
an end effector configured to cut the connection portion;
an end effector support portion configured to support the end effector;
a cutting joint portion connected to the end effector support portion and configured to change a direction of the end effector; and
a support driving portion configured to support the end effector support portion.

6. The apparatus of claim 4 , wherein:
the movement adjusting unit includes
a forward/backward movement adjusting portion configured to adjust a forward/backward movement of the cutting unit; and
an upward/downward movement adjusting portion configured to adjust an upward/downward movement of the cutting unit.

Assignees

• Korea Hydro & Nuclear Power Co

Inventors

• Hwang Seok-Ju
• Hwang Young Hwan
• Hong Sung-Hoon
• Kim Cheon-Woo

Classifications

• B23D45/003 Primary

  for particular purposes · CPC title

• B23D53/006

  Convertible sawing devices · CPC title

• G21D1/003 Primary

  Nuclear facilities decommissioning arrangements (decontamination arrangements, treating radioactively contaminated material G21F9/00) · CPC title

• Y10T29/531

  Nuclear device · CPC title

• Y02E30/00

  Energy generation of nuclear origin · CPC title