KR20150007631A - radiation active waste storage apparatus - Google Patents

radiation active waste storage apparatus Download PDF

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Publication number
KR20150007631A
KR20150007631A KR20130081867A KR20130081867A KR20150007631A KR 20150007631 A KR20150007631 A KR 20150007631A KR 20130081867 A KR20130081867 A KR 20130081867A KR 20130081867 A KR20130081867 A KR 20130081867A KR 20150007631 A KR20150007631 A KR 20150007631A
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KR
South Korea
Prior art keywords
gravity
based structure
nuclear waste
seawater
loading
Prior art date
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KR20130081867A
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Korean (ko)
Inventor
김연태
우일국
최영복
이원준
Original Assignee
대우조선해양 주식회사
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Application filed by 대우조선해양 주식회사 filed Critical 대우조선해양 주식회사
Priority to KR20130081867A priority Critical patent/KR20150007631A/en
Publication of KR20150007631A publication Critical patent/KR20150007631A/en

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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F1/00—Shielding characterised by the composition of the materials
    • G21F1/02—Selection of uniform shielding materials
    • G21F1/04—Concretes; Other hydraulic hardening materials
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/005—Containers for solid radioactive wastes, e.g. for ultimate disposal
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F7/00—Shielded cells or rooms
    • G21F7/04—Shielded glove-boxes

Abstract

A nuclear waste storage device,
Gravity based structures made of concrete and installed in the sea; Through a technical arrangement including a metal cask to be loaded inside the gravity based structure
It is possible to easily secure a nuclear waste storage site and to store nuclear waste more stably.

Description

[0001] RADIATION ACTIVE WASTE STORAGE APPARATUS [0002]

FIELD OF THE INVENTION The present invention relates to nuclear waste storage devices, and more particularly to loading multiple metal cask or concrete silos into a gravity based structure (GBS).

In general, Radiation Active Waste has gaseous, liquid, solid, and is classified into high-level nuclear waste and low-level nuclear waste depending on the intensity of radioactivity.

High-level nuclear waste arises from nuclear reactions and refers to radioactive isotopes such as cesium, iodine, strontium, and technetium as the remaining elements after nuclear fission in the reactor.

Since high-level nuclear waste has a strong radiation intensity and a long half-life of tens of thousands of years, there is still no scientifically or politically stable disposal plan, and is dumped in the deep sea or buried underground.

Among the high-level nuclear waste, spent nuclear fuel is fossilized by nuclear fission in nuclear reactor for 3 to 5 years, and 1% of uranium 235 and plutonium 239 remain.

This is because it is fissionable. Taking it out and reprocessing it will increase the efficiency of uranium. However, this is a very sensitive technology because of the enrichment technology, so it is exclusive in some advanced countries.

At present, high-level radioactive waste is stored in RCB (Reactor Containment Building) in Korea, but it is predicted that the space to be stored in the containment building will be shortened by 2016.

Therefore, it is necessary to construct an intermediate storage facility for spent nuclear fuel, but it is not easy to construct the opposite side of the residents on land.

Meanwhile, the storage method for the high-level nuclear waste can be roughly classified into a wet storage method and a dry storage method.

The dry storage method is different from the wet storage method in that gas or air is used as a coolant instead of water, and concrete or metal is used instead of water as a radiation shielding material.

The dry storage method is more advantageous than the wet storage method in terms of cost and management since the nuclear waste is stored in the dry storage facility and there is no operating cost and little risk.

Among the above dry storage methods, there are a metal cast method, a concrete silo method, a horizontal concrete moudular storage method, and a vault storage method in a commercial scale.

The metal casting method is a method of storing nuclear waste in a metal cast and storing it on a concrete pad, and the concrete silo method is a method of storing nuclear waste in a concrete container.

In the concrete storage module method, the canister loaded with the nuclear waste is stored horizontally in the concrete storage module installed in the storage site. The bolt storage method is a method in which the metal tube is installed in the concrete structure and the nuclear waste is stored in the metal tube Method.

The present invention relates to a metal cast type nuclear waste storage device in the dry storage method, and more particularly, to a nuclear waste storage device for storing high-level nuclear waste including spent fuel.

The following Patent Documents 1 and 2 disclose a technology related to a nuclear waste storage container, and the following Patent Documents 3 to 5 disclose a dry storage type nuclear waste storage technique.

Korean Patent Publication No. 10-2010-0115905 (published on October 29, 2010) Korean Patent Registration No. 10-0562480 (published on March 31, 2006) Korean Patent Publication No. 10-1999-0036217 (published on May 25, 1999) Korean Patent Publication No. 10-2001-0110462 (published on December 13, 2001) Korean Patent Laid-Open Publication No. 10-2006-0044398 (published May 16, 2006)

However, the conventional technologies disclosed in Patent Documents 1 to 5 have a problem in that it is difficult to secure a storage space on land because the nuclear waste storage container is buried in the ground.

In addition, it is not easy to install a nuclear waste storage container, and there is a problem in that it is difficult to temporarily store nuclear waste or carry it in or out of a storage facility.

SUMMARY OF THE INVENTION An object of the present invention is to provide a nuclear waste storage device capable of easily securing a storage location of a nuclear waste storage container.

It is another object of the present invention to provide a nuclear waste storage device capable of efficiently cooling a nuclear waste storage container.

It is another object of the present invention to provide a nuclear waste storage device capable of easily loading and unloading a nuclear waste storage container.

In order to achieve the above object, a nuclear waste storage device according to the present invention comprises: a gravity based structure made of concrete or steel and installed in the sea; And a metal cask or a concrete silo loaded inside the gravity based structure.

The nuclear waste storage device according to the present invention is characterized in that the gravity-based structure comprises a bottom body and a wall; And a loading deck provided under the inside of the embedding type main body.

In addition, a storage space is provided above the loading deck inside the embedding body of the gravity based structure, and a seawater filling space is formed between the bottom of the embedding body of the gravity based structure and the loading deck.

In addition, a seawater supply hole connected to the storage space is formed in a wall of the main body of the gravity-based structure, and the seawater supply hole is provided with an opening / closing device.

In addition, a pump for pumping seawater or rainwater introduced into the storage space of the impregnated body to the outside of the impregnable body is installed at the upper end of the loading deck inside the impounded body of the gravity-based structure.

Also, a plurality of seawater inlet / outlet holes are formed in the wall of the impregnated body of the gravity-based structure, the plurality of seawater outlet holes being connected to the seawater-filled space.

The nuclear waste storage device according to the present invention is characterized in that a pendulum approaching a gravity based structure or a fender for anchorage of a ship is provided for loading or unloading a metal cask or a concrete silo at the sea level surface of the periphery of the gravity based structure .

The nuclear waste storage device according to the present invention is characterized in that a sealing lid for sealing the storage space is installed on the upper part of the impregnated body of the gravity-based structure in an openable and closable manner.

In addition, the sealing lid is provided with ventilation means for cooling the metal cask or the concrete silo, which is loaded in the storage space.

The nuclear waste storage device according to the present invention is characterized in that the planar shape of the bottom body 111a, the wall body 111b, and the loading deck 112 of the impregnated body 111 of the gravity-based structure 110 is rectangular or circular do.

The nuclear waste storage device according to the present invention is characterized in that a plurality of loading grooves 112a corresponding to the shape of the lower end of the metal cask or concrete silo 120 are formed on the upper end of the gravity-based structure loading deck 112.

Further, a plurality of loading grooves are arranged at uniform intervals on the loading deck.

According to the nuclear waste storage device of the present invention, since a metal cask, which is a nuclear waste storage container, is loaded in a gravity-based structure installed in the sea, a nuclear waste storage site can be easily secured.

In other words, it is possible to avoid the external risk factors such as the tsunami and to solve the problem of the restricted land area, and to shorten the project period and reduce the cost by constructing the plant and minimizing the installation period and installation period. .

In addition, according to the nuclear waste storage device of the present invention, the metal cask can be cooled by using seawater during the nuclear waste storage process, so that the nuclear waste can be stably stored.

In addition, according to the nuclear waste storage device of the present invention, the metal cask can be easily carried in or out of a crane of a carrier or a crane provided in a gravity-based structure. Further, .

In addition, according to the nuclear waste storage device of the present invention, it is possible to efficiently recover the accident by using abundant seawater in the vicinity of an accident, thereby minimizing human and material damage.

1 is a longitudinal sectional view of a nuclear waste storage device according to a preferred embodiment of the present invention,
2 is a plan view of a nuclear waste storage device according to the embodiment,
3 is a longitudinal sectional view of a nuclear waste storage device according to the present embodiment in a state in which a sealing lid is installed.

Hereinafter, a nuclear waste storage device according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the following, the terms "upward", "downward", "forward" and "rearward" and other directional terms are defined with reference to the states shown in the drawings.

FIG. 1 is a longitudinal sectional view of a nuclear waste storage device according to a preferred embodiment of the present invention, and FIG. 2 is a plan view of a nuclear waste storage device according to the present embodiment.

1 and 2, a nuclear waste storage device 100 according to a preferred embodiment of the present invention includes a gravity based structure 110, a GBS (Gravity Based Structure), a metal cask or a concrete silo Concrete silo (120).

The gravity based structure 110 is installed in a sea of relatively low water depth and serves to safely store a plurality of metal cask 120.

The gravity-based structure 110 is landed on the sea floor by its own weight, and is composed of a main body 111 and a loading deck 112 made of concrete or steel.

The impregnated body 111 of the gravity based structure 110 is composed of a bottom 111a and a wall 111b and the loading deck 112 is provided inside the inside of the impregnated body 111.

A storage space 113 is provided above the loading deck 112 inside the impregnated body 111 of the gravity based structure 110 and a space 113 is provided between the bottom 111a of the loaded body 111 and the loading deck 112 A seawater filling space 114 is formed.

The wall 111b of the main body 111 of the gravity-based structure 110 is formed with a seawater supply hole 115 connected to the storage space 113. In the seawater supply hole 115, (116).

The opening and closing device 116 of the seawater supply hole 115 is opened when the temperature of the metal cask or the concrete silo 120 loaded on the loading deck 112 exceeds the reference temperature or cracks occur .

When the seawater supply hole 115 is opened, seawater flows into the storage space 113 of the impregnated body 111 to cool the metal cask or the concrete silo 120 to perform the shielding function of the neutron .

A pump 130 is installed on one side of the top of the loading deck 112 inside the impregnated body 111 of the gravity-based structure 110.

The pump 130 is for pumping seawater or rainwater filled in the storage space 113 of the impregnated body 111 to the outside of the impregnated body 111.

The wall 111b of the main body 111 of the gravity-based structure 110 is formed with a plurality of seawater inlet / outlet holes 117 connected to the seawater filling space 113.

Therefore, the seawater-filled space 113 of the impregnated body 111 is always kept filled with seawater, and the loaded deck 112 can be cooled by the seawater filled in the seawater-filled space 113.

At the sea level area around the gravity-based structure 110, a paddle approaching the gravity-based structure 110 for loading or unloading a metal cask or a concrete silo 120, or a fender 140 for anchoring the ship .

3 is a longitudinal sectional view of the nuclear waste storage device according to the embodiment of the present invention in a state in which a sealing lid is installed.

3, a sealing lid 150 for sealing the storage space 113 may be provided at an upper portion of the impregnated body 111 of the gravity-based structure 110 so as to be openable and closable

A ventilation means 151 for cooling the metal cask or the concrete silo 120 installed in the storage space 113 is provided in the sealing lid 150 installed on the upper portion of the impregnated body 111 of the gravity- Should be provided.

In addition, the ventilation means 151 should be designed to be opened normally so as to cool the metal cask or the concrete silo 120, and to be sealed when radiation is detected in the storage space 113.

The planar shape of the bottom body 111a, the wall 111b, and the loading deck 112 of the impregnated body 111 of the gravity-based structure 110 is preferably rectangular or circular, but can also be formed in other shapes .

A plurality of loading grooves 112a corresponding to the shape of the lower end of the metal cask or concrete silo 120 are formed at the upper end of the gravity-based structure loading deck 112.

The plurality of stacking grooves 112a of the stacking deck 112 are arranged at uniform intervals so that the metal cask 120 whose lower ends are inserted into the stacking grooves 112a are also arrayed at uniform intervals.

The metal cask or concrete silo 120 is a vessel that safely receives nuclear waste without fear of radiation leakage.

The metal cask or concrete silo 120 is provided with a lug (121, Lug) for crane connection.

Other structures of the metal cask and the concrete silo are well known, and detailed description thereof will be omitted.

Meanwhile, the nuclear waste storage device 100 according to the preferred embodiment of the present invention further includes a surveillance system for detecting external intrusion, a power system for operating the pump and the crane, and a control system.

In the nuclear waste storage device 100 according to the preferred embodiment of the present invention, a metal cask or a concrete silo 120 is installed in the gravity-based structure 110 installed in the sea to safely store nuclear waste .

When loading a metal cask or a concrete silo 120 into the loading deck 112 inside the gravity-based structure 110, a crane installed on the crane of the carrier or on the top of the impregnated body 111 of the gravity- The metal cask or the concrete silo 120 may be lifted and then the lower end of the metal cask or the concrete 120 may be inserted into the loading groove 112a provided at the upper end of the loading deck 112 to be inserted.

In the nuclear waste storage device 100 according to the preferred embodiment of the present invention, since the seawater-filled space 113 provided under the loading deck 112 inside the gravity-based structure 110 is always filled with seawater, And the metal cask or concrete silo 120 loaded on the loading deck 112 are cooled by seawater.

The metal cask or concrete silo 120 loaded on the loading deck 112 is also cooled by the outside air introduced into the impregnated body 111 of the gravity based structure 110.

A nuclear waste storage device 100 according to a preferred embodiment of the present invention is a nuclear waste storage device 100 in which radiation of nuclear waste is primarily shielded by a metal cask or concrete silo 120 and is shielded secondarily by gravity- do.

Therefore, it is possible to store nuclear waste more safely, and there is no fear that the influence of radiation on the seawater during the nuclear waste storage process is completely eliminated.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

100: Nuclear waste storage device 110: Gravity based structure
111: impregnation body 112: stacking deck
112a: Loading groove 113: Storage space
114: Seawater filling space 115: Seawater supply hole
116: opening and closing device 117: sea water access hole
120: Metal cask or concrete silo
130: Pump 140: Fender
150: sealing lid 151: ventilation means

Claims (12)

A gravity based structure 110 made of concrete or steel and installed in the sea;
And a metal cask or concrete silo (120) loaded within the gravity based structure (110). The method according to claim 1,
The gravity-based structure 110 includes a main body 111 including a bottom 111a and a wall 111b; And a loading deck (112) provided under the inside of the embedding type main body (111). 3. The method of claim 2,
A storage space 113 is provided above the loading deck 112 inside the impregnated body 111 of the gravity based structure 110,
Wherein a seawater filling space (114) is formed between the bottom body (111a) of the impregnated body (111) of the gravity based structure (110) and the loading deck (112). The method of claim 3,
A seawater supply hole 115 connected to the storage space 113 is formed in the wall 111b of the impregnated body 111 of the gravity based structure 110,
Wherein the seawater supply hole (115) is provided with an opening / closing device (116). The method of claim 3,
The seawater or the rainwater flowing into the storage space 113 of the impregnated body 111 is pumped to the outside of the impregnated body 111 at the upper end of the loading deck 112 inside the impregnated body 111 of the gravity- Wherein a pump (130) is provided for the nuclear waste storage device. The method of claim 3,
Wherein a wall 111b of the main body 111 of the gravity-based structure 110 is formed with a plurality of seawater inlet / outlet holes 117 connected to the seawater filling space 113. The method of claim 3,
A fender 140 for anchorage of the pants or vessel approaching the gravity-based structure 110 for loading or unloading the metal cask or the concrete silo 120 at the sea level surface around the gravity-based structure 110 And the nuclear waste storage device. The method of claim 3,
Characterized in that a sealing lid (150) for sealing the storage space (113) is provided on the upper portion of the impregnated body (111) of the gravity based structure (110) in an openable and closable manner. 9. The method of claim 8,
Wherein the sealing lid (150) is provided with ventilation means (151) for cooling the metal cask or the concrete silo (120) loaded in the storage space (113). The method of claim 3,
Wherein the planar shape of the bottom body (111a), the wall (111b), and the loading deck (112) of the impregnated body (111) of the gravity based structure (110) is rectangular or circular. The method of claim 3,
Wherein a plurality of loading grooves (112a) corresponding to the shape of the lower end of the metal cask or concrete silo (120) are formed on the upper end of the gravity-based structure loading deck (112). The method according to claim 6,
Wherein a plurality of loading grooves (112a) are arranged at uniform intervals in the loading deck (112).
KR20130081867A 2013-07-12 2013-07-12 radiation active waste storage apparatus KR20150007631A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102261334B1 (en) 2020-01-06 2021-06-04 한국해양과학기술원 Electric generation and heat supply complex apparatus using heat of nuclear waste cooling water tank and sea water
KR102383158B1 (en) 2021-11-15 2022-04-08 주식회사 케이씨산업 Waste treatment facility and the construction method using the laminating method segment structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102261334B1 (en) 2020-01-06 2021-06-04 한국해양과학기술원 Electric generation and heat supply complex apparatus using heat of nuclear waste cooling water tank and sea water
KR102383158B1 (en) 2021-11-15 2022-04-08 주식회사 케이씨산업 Waste treatment facility and the construction method using the laminating method segment structure

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