JPH0348798A - Leakage detecting device for lining tank - Google Patents
Leakage detecting device for lining tankInfo
- Publication number
- JPH0348798A JPH0348798A JP1183566A JP18356689A JPH0348798A JP H0348798 A JPH0348798 A JP H0348798A JP 1183566 A JP1183566 A JP 1183566A JP 18356689 A JP18356689 A JP 18356689A JP H0348798 A JPH0348798 A JP H0348798A
- Authority
- JP
- Japan
- Prior art keywords
- leakage
- flow rate
- lining
- tank
- leak
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000002901 radioactive waste Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims 2
- 239000012530 fluid Substances 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000002915 spent fuel radioactive waste Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は原子力発電所等で使用済み燃料の貯蔵に用いら
れる燃料貯蔵プールや、放射性流体を貯蔵する復水貯蔵
プール等として使用されるライニング槽、特にその漏洩
検出装置に係る。[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) The present invention is applicable to fuel storage pools used for storing spent fuel in nuclear power plants, etc., condensate storage pools for storing radioactive fluids, etc. This relates to a lining tank used as a lining tank, particularly a leakage detection device thereof.
（従来の技術）
原子力発電所の使用済み燃料貯蔵プールや放射性流体を
貯蔵する復水貯蔵プール等としては、ライニング槽が使
用されている。これ等のライニング槽は、ステンレス鋼
板等によって構成されたライニングをコンクリート槽の
内側に設置して構成される。第２図は従来のライニング
槽およびその漏洩検出系の概要を示す模式的断面図であ
る。この図において、ライニング１は何百枚ものステン
レス鋼板を溶接して構成され、はぼｒｉ １．０ ｍ、
奥行３０ｍ、深さ１０ｒｎ程度の大きさであり１例えば
建屋床面を掘削しコンクリートを打設してなるほぼ同程
度の大きさのコンクリート槽２内に設置される。なお、
図中３は貯溜水を示している。(Prior Art) Lining tanks are used as spent fuel storage pools in nuclear power plants, condensate storage pools for storing radioactive fluid, and the like. These lined tanks are constructed by installing a lining made of stainless steel plate or the like inside a concrete tank. FIG. 2 is a schematic cross-sectional view showing an outline of a conventional lining tank and its leakage detection system. In this figure, the lining 1 is constructed by welding hundreds of stainless steel plates, and has a diameter of 1.0 m.
The tank has a depth of about 30 m and a depth of about 10 m, and is installed in a concrete tank 2 of about the same size, for example, by excavating the floor of a building and pouring concrete into it. In addition,
3 in the figure indicates stored water.
而して、ステンレス鋼板の溶接箇所は極めて多数にのぼ
り、それ等の溶接箇所が何等かの原因で腐食したり、溶
接に不備があって破損したりすると貯溜水の漏洩を生じ
るおそれがある。貯溜水は放射性を帯びた流体であり、
その漏洩は速やかに且つ確実に漏洩を生じた部位ととも
に検出されなければならない、従って、ライニング槽に
は図中縦長の括弧で括って４としで示した漏洩検出系が
設けられている。Therefore, there are an extremely large number of welded points on the stainless steel plate, and if these welded points corrode for some reason or break due to defective welding, there is a risk of leakage of stored water. Reservoir water is a radioactive fluid;
The leakage must be detected promptly and reliably along with the site where the leakage occurred.Therefore, the lining tank is equipped with a leakage detection system indicated by 4 in vertical parentheses in the figure.
この漏洩検出系４は、ライニング１の底板の両端の溶接
縁を除く区域（エリアＢ）とコンクリート槽２の底面と
の間の空間を単一または少数の溶接縁を含む複数の小室
５に区画する隔壁６と、エリアＢに対応するそれぞれの
小室に対応する小室（図には現れていない）と、両端の
隔壁とライニング１の底面の両端部および側壁（エリア
Ａ）およびそれ等に対向するコンクリート槽壁面間の空
間に対応する小室（図には現れていない）とを備えた漏
洩目視箱７とを具えている。而して、エリアＢにおける
各小室５とそれに対応する前記漏洩目視箱７の小室との
間、前記エリアＡにおける空間とそれに対応する前記漏
洩目視箱７の小室との間はそれぞれ検出配管８によって
接続されている。This leakage detection system 4 divides the space between the area (area B) excluding the welded edges at both ends of the bottom plate of the lining 1 and the bottom surface of the concrete tank 2 into a plurality of small chambers 5 containing a single or a small number of welded edges. A partition wall 6, a small chamber (not shown in the figure) corresponding to each small chamber corresponding to area B, a partition wall at both ends, both ends of the bottom surface of the lining 1, and a side wall (area A), and opposing thereto. The leak viewing box 7 is provided with a small chamber (not shown in the figure) corresponding to the space between the walls of the concrete tank. Therefore, a detection pipe 8 is provided between each small chamber 5 in area B and the corresponding small chamber of the leak visual box 7, and between a space in the area A and the corresponding small chamber of the leak visual box 7. It is connected.
また、図には漏洩目視箱７の１箇の小室に対応するもの
が１箇だけ示されているが、図には現れていない各小室
毎に中間に水位計９を具え、終端において放射性廃棄物
処理工程１ｏに連通されるドレン配管１１が設けられて
いる。水位計９は成る一定の水位が検出された時、警報
を発生するものとしである。In addition, although the figure shows only one corresponding to one small chamber of the leakage inspection box 7, each small chamber not shown in the figure is equipped with a water level gauge 9 in the middle, and radioactive waste is disposed of at the end. A drain pipe 11 is provided that communicates with the material processing step 1o. The water level gauge 9 is designed to issue an alarm when a certain water level is detected.
上記構成の従来のライニング槽において、エリアＢの各
小室５に対応するライニング底面、エリアＡのライニン
グ壁面の何れかにおいて漏洩を生じたとする。この場合
において、水位計９が前記一定の水位を検知すれば警報
が発生される。ここで、監視員が漏洩目視箱７を観察し
、その何れの小室に漏洩水が貯溜されているかを知るこ
とにより漏洩の発生した概略の箇所を検知することがで
きる。In the conventional lining tank having the above configuration, let us assume that a leak occurs at either the lining bottom surface corresponding to each small chamber 5 in area B or the lining wall surface in area A. In this case, if the water level gauge 9 detects the certain water level, an alarm is generated. Here, the supervisor can detect the approximate location where the leak has occurred by observing the leak viewing box 7 and knowing in which chamber the leaked water is stored.
（発明が解決しようとするｉ題）
上記従来のライニング槽およびその漏洩検出系において
は、例えばエリア已に顕著なように漏洩発生箇所に大き
な水頭圧が作用していることがある。このような場合に
は、前記水頭圧によって漏洩流量が著しく大きくなるこ
とがある。(Problem to be Solved by the Invention) In the above-mentioned conventional lining tank and its leakage detection system, a large water head pressure may be applied to the location where the leakage occurs, for example, in areas where the leakage occurs. In such a case, the leakage flow rate may become significantly large due to the water head pressure.
本発明は上記の事情に基づきなされたもので。The present invention has been made based on the above circumstances.
漏洩の検知およびその発生箇所の概略を知り得るだけで
なく、発生箇所の如何にかかわらず漏洩流量を一定値以
下に制限することができるライニング槽の漏洩検出装置
を提供することを目的としている。It is an object of the present invention to provide a leakage detection device for a lining tank that can not only detect leakage and know the outline of the location where the leakage occurs, but also limit the leakage flow rate to a certain value or less regardless of the location where the leakage occurs.
［発明の構成］
（ｊ１１！ｇを解決するための手段）
本発明のライニング槽の漏洩検出装置は、コンクリート
槽およびこのコンクリート槽内に設けられステンレス等
の耐食材料の板材からなるライニングを備えたライニン
グ槽の前記ライニングの底板とコンクリート槽底面との
間の空間を前記底板の両端の溶接縁を除き単一または少
数の溶接縁を含む複数の小室に区画し、これ等の小室お
よび前記ライニングの側壁とコンクリート槽の側壁との
間の空間にそれぞれ対応し、対応するもの同士検出配管
によって連通された小室を備えた漏洩目視箱を設け、前
記漏洩目視箱の各小室には水位計を具え終端において放
射性廃棄物処理工程に連通ずるドレン配管を連通させた
ものにおいて、前記検出配管にはそれぞれ流電制限オリ
フィスを設けたことを特徴とする。[Structure of the Invention] (Means for Solving j11!g) The leakage detection device for a lining tank of the present invention includes a concrete tank and a lining provided in the concrete tank and made of a plate made of a corrosion-resistant material such as stainless steel. The space between the bottom plate of the lining of the lining tank and the bottom of the concrete tank is divided into a plurality of small chambers each including a single or a small number of welded edges, excluding the welded edges at both ends of the bottom plate, and these small chambers and the bottom of the lining A leakage viewing box is provided with small chambers that correspond to the spaces between the side walls and the sidewalls of the concrete tank and are communicated with each other by detection piping, and each of the small rooms of the leakage viewing box is equipped with a water level gauge and has a terminal end. In the apparatus in which a drain pipe is connected to a radioactive waste treatment process, each of the detection pipes is provided with a current-limiting orifice.
（作用）
上記構成の本発明のライニング槽の漏洩検出装置におい
ては、ライニングに漏洩を生じた場合にあっても検出配
管に設けた流量制限オリフィスが流量を一定値以下に制
限するので、漏洩発生箇所に大きな水頭圧力が作用して
いる場合であっても、漏洩流量が著しく大きくなるおそ
れはない。(Function) In the leak detection device for a lining tank of the present invention having the above configuration, even if a leak occurs in the lining, the flow rate limiting orifice provided in the detection pipe limits the flow rate to a certain value or less, so that the leak does not occur. Even if a large head pressure is applied to a location, there is no risk that the leakage flow rate will become significantly large.
（実施例）
第２図と同一部分には同一符号を付した第１図は、本発
明の一実施例の模式的断面図である。この図に示すよう
に本発明のライニング槽の漏洩検出装置においては、各
検出配管８に流量制限オリフィス１２が設けられている
。(Embodiment) FIG. 1, in which the same parts as in FIG. 2 are denoted by the same reference numerals, is a schematic cross-sectional view of an embodiment of the present invention. As shown in this figure, in the lining tank leak detection device of the present invention, each detection pipe 8 is provided with a flow rate limiting orifice 12.
上記構成の本発明ライニング槽の漏洩検出装置において
も、漏洩が発生した場合には水位計９により警報が発生
されること、漏洩目視箱７により漏洩発生箇所を検知し
選ることは従来の漏洩検出装置と同様である。而して、
本発明の漏洩検出装置においては検出配管８に流量制限
オリフィス１２が設けられているため、漏洩発生箇所に
大きな水頭圧力が作用している場合であっても、漏洩流
量が大きくなるおそれはない。Even in the leak detection device for a lining tank of the present invention having the above configuration, when a leak occurs, the water level gauge 9 issues an alarm, and the leak sighting box 7 detects and selects the location where the leak occurs. It is similar to the detection device. Then,
In the leak detection device of the present invention, since the flow rate limiting orifice 12 is provided in the detection pipe 8, there is no fear that the leak flow rate will become large even if a large head pressure is acting on the location where the leak occurs.
［発明の効果］
」二記から明らかなように本発明のライニング槽の漏洩
検出装置においては、従来のそれにおけると同様に漏洩
およびその発生箇所の検出を行うことができる。しかも
それだけでなく、漏洩発生箇所の如何を問わず漏洩流量
を成る一定値以下に制限することができるので、放射性
廃液の排出量を減少させ放射性廃棄物処理の負担を減じ
ることができる。また、ライニング槽に仮に漏洩が生じ
たとしても、漏洩量が制限されているため槽内の水の減
少速度が低くされており、例えば燃料貯蔵プール等の安
全性を向上させることができる。[Effects of the Invention] As is clear from the second paragraph, the leakage detection device for a lining tank of the present invention can detect leakage and its occurrence location in the same manner as in the conventional device. Moreover, since the leakage flow rate can be limited to a certain value or less regardless of where the leakage occurs, the amount of radioactive waste liquid discharged can be reduced and the burden of radioactive waste disposal can be reduced. Furthermore, even if a leak were to occur in the lining tank, the amount of leakage is limited, so the rate at which the water in the tank decreases is reduced, making it possible to improve the safety of, for example, a fuel storage pool.
第１図は本発明の一実施例の模式的断面図、第２図は従
来のライニング槽およびその漏洩検出系の概要を示す模
式的断面図である。
１・・・・・・ライニング ２・・・・・・コンクリ−
Ｉ−槽 ３・・・・・・貯溜槽 ４・・・・・・漏洩検
出系 ５・・・・・・小室 ６・・・・・・隔壁 ７・
・・・・・漏洩目視箱 ８・・・・・・検出配管９・・
・・・・水位計 １．０・・・・・・放射性廃棄物処理
工程１１・・・・・・ドレン配管 】２・・・・・・流
量制限オリフィスFIG. 1 is a schematic sectional view of an embodiment of the present invention, and FIG. 2 is a schematic sectional view showing an outline of a conventional lining tank and its leakage detection system. 1...Lining 2...Concrete
I-tank 3... Storage tank 4... Leak detection system 5... Small chamber 6... Bulkhead 7.
...Leak viewing box 8...Detection piping 9...
...Water level gauge 1.0...Radioactive waste treatment process 11...Drain piping ]2...Flow rate restriction orifice
Claims (1)
ステンレス等の耐食材料の板材からなるライニングを具
えたライニング槽の前記ライニングの底板とコンクリー
ト槽底面との間の空間を前記底板の両端の熔接線を除き
単一または少数の熔接線を含む複数の小室に区画し、こ
れ等の小室および前記ライニングの側壁とコンクリート
槽の側壁との間の空間にそれぞれ対応し、対応するもの
同士検出配管によって連通された小室を備えた漏洩目視
箱を設け、前記漏洩目視箱の各小室には水位計を具え終
端において放射性廃棄物処理工程に連通するドレン配管
を連通させたものにおいて、前記検出配管にはそれぞれ
流量制限オリフィスを設けたことを特徴とするライニン
グ槽の漏洩検出装置。The space between the bottom plate of the lining and the bottom of the concrete tank of a concrete tank and a lining made of a plate of corrosion-resistant material such as stainless steel is provided in the concrete tank, excluding the weld tangent lines at both ends of the bottom plate. The chambers are divided into a plurality of chambers containing one or a small number of weld lines, each corresponding to a space between the side wall of the lining and the side wall of the concrete tank, and connected to each other by detection piping. A leakage monitoring box is provided, each small chamber of the leakage monitoring box is equipped with a water level gauge, and a drain pipe is connected to the radioactive waste treatment process at the end thereof, and each of the detection pipes is provided with a flow rate limiting orifice. A leakage detection device for a lining tank, characterized in that it is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1183566A JPH0348798A (en) | 1989-07-18 | 1989-07-18 | Leakage detecting device for lining tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1183566A JPH0348798A (en) | 1989-07-18 | 1989-07-18 | Leakage detecting device for lining tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0348798A true JPH0348798A (en) | 1991-03-01 |
Family
ID=16138047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1183566A Pending JPH0348798A (en) | 1989-07-18 | 1989-07-18 | Leakage detecting device for lining tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0348798A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5519684A (en) * | 1990-05-14 | 1996-05-21 | Casio Computer Co., Ltd. | Digital recorder for processing in parallel data stored in multiple tracks |
| US5581530A (en) * | 1990-09-06 | 1996-12-03 | Casio Computer Co., Ltd. | Digital recorder for processing of parallel data stored in multiple tracks and using cross-fade processing |
| US5974015A (en) * | 1990-05-14 | 1999-10-26 | Casio Computer Co., Ltd. | Digital recorder |
| US8586246B2 (en) | 2008-09-01 | 2013-11-19 | Sony Corporation | Positive electrode active material, positive electrode using the same and non-aqueous electrolyte secondary battery |
-
1989
- 1989-07-18 JP JP1183566A patent/JPH0348798A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5519684A (en) * | 1990-05-14 | 1996-05-21 | Casio Computer Co., Ltd. | Digital recorder for processing in parallel data stored in multiple tracks |
| US5974015A (en) * | 1990-05-14 | 1999-10-26 | Casio Computer Co., Ltd. | Digital recorder |
| US5581530A (en) * | 1990-09-06 | 1996-12-03 | Casio Computer Co., Ltd. | Digital recorder for processing of parallel data stored in multiple tracks and using cross-fade processing |
| US8586246B2 (en) | 2008-09-01 | 2013-11-19 | Sony Corporation | Positive electrode active material, positive electrode using the same and non-aqueous electrolyte secondary battery |
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