JPS5914800Y2 - Shiyahei Block - Google Patents
Shiyahei BlockInfo
- Publication number
- JPS5914800Y2 JPS5914800Y2 JP1979018401U JP1840179U JPS5914800Y2 JP S5914800 Y2 JPS5914800 Y2 JP S5914800Y2 JP 1979018401 U JP1979018401 U JP 1979018401U JP 1840179 U JP1840179 U JP 1840179U JP S5914800 Y2 JPS5914800 Y2 JP S5914800Y2
- Authority
- JP
- Japan
- Prior art keywords
- opening
- reactor
- closing door
- space
- block
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- -1 granular Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 7
- 238000007689 inspection Methods 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000011805 ball Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000004576 sand 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
-
- 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)
Description
【考案の詳細な説明】
本考案はスペース上の制約がなく、開閉が容易でかつ放
射線被曝を低減できる原子炉じゃへい壁の開口部のしゃ
へいブロックに関する。[Detailed Description of the Invention] The present invention relates to a shielding block for an opening in a nuclear reactor shielding wall that has no space constraints, is easy to open and close, and can reduce radiation exposure.
原子炉容器の周辺は放射線じゃへいの目的からしやへい
壁が設けられている。A shield wall is installed around the reactor vessel to prevent radiation.
原子炉容器に接続される配管はこのしやへい壁を貫通し
て原子炉容器ノズルに接続される。Piping connected to the reactor vessel passes through this thin wall and is connected to the reactor vessel nozzle.
原子炉容器と接続する配管との溶接部は供用期間中の検
査として定期的に超音波探傷検査等の非被壊検査を行な
うことが要求されているため、しやへい壁の配管貫通部
等は検査が可能であるように、十分な大きさの開口部を
有することが必要である。The welds between the reactor vessel and the piping connected to the reactor vessel are required to undergo periodic non-destructive inspections such as ultrasonic testing during the service period, so welds that connect the reactor vessel to the pipes that connect to the reactor vessel are required to undergo periodic non-destructive testing such as ultrasonic flaw detection. It is necessary to have an opening large enough to allow inspection.
一方、通常運転中は放射線漏洩防止の見地がら、上記開
口部は極力小さくする必要があるため、通常開閉可能ま
たは除去可能なしゃへいブロックを上記開口部に設置す
る。On the other hand, during normal operation, the opening needs to be made as small as possible from the standpoint of preventing radiation leakage, so a shielding block that can be opened and closed or removed is normally installed in the opening.
このしやへいブロックは検査時には開口部がら除去する
のであるが、放射線被曝低減の見地がら開閉または除去
および再設置が短時間がっ小人数で行なわれることおよ
び設置場所に制約があるため開閉ペースの小゛さいこと
が要求される。The entire opening of this shield block is removed during inspections, but from the standpoint of reducing radiation exposure, opening, closing, removal, and reinstallation must be done by a small number of people in a short period of time, and there are restrictions on the installation location, so the opening and closing pace is slow. A small size is required.
次に、従来のしやへいベロツクの一例を第１図および第
２図に示す。Next, an example of a conventional stiffening belt is shown in FIGS. 1 and 2.
図において、原子炉容器１０１に接続される配管１０２
が原子炉じゃへい壁１０３を貫通する部分には切欠き１
０６を設け、この切欠き部１０６にかんのん開き式の鋼
鉄製層１０４が設置されている。In the figure, piping 102 connected to reactor vessel 101
There is a notch 1 in the part where the reactor wall 103 is penetrated.
06, and a steel layer 104 that can be opened easily is installed in this notch 106.
切欠き部１０６のしやへいはこの鋼鉄製屏１０４により
行なう。The cutout portion 106 is sealed using this steel screen 104.
供用期間中に非破壊検査を行なう場合は鋼鉄製層１０４
をがんのん開き式に開き、保温材１０５を外す。If non-destructive testing is to be performed during the service period, the steel layer 104
Open it in a fold-down manner and remove the heat insulating material 105.
この場合、鋼鉄製層１０４の開閉には前面に開閉のため
の扉移動用の空間を必要とするが、格納容器の大きさの
制約から、十分な空間をとるのが困難な場合がある。In this case, opening and closing of the steel layer 104 requires a space in the front for moving the door for opening and closing, but it may be difficult to provide sufficient space due to the size restrictions of the containment vessel.
更に、貫通後エルボが近接している場合などは貫通配管
自体と干渉するため、上記扉１０４を３分割にする等複
雑な構造とする必要がある。Furthermore, if the elbows are close to each other after penetration, they will interfere with the penetration piping itself, so it is necessary to have a complicated structure such as dividing the door 104 into three parts.
本考案は上記の従来のしやへいブロックの欠点を解決し
、スペース上の制約がなく、開閉が容易でかつ放射線被
曝を低減できる原子炉じゃへい壁の開口部のしゃへいブ
ロックを提供するもので、その要旨とするところは、原
子炉しやへい壁の開口部のしゃへいブロックにおいて、
該開口部に設けた開閉扉を引込式とするとともに該開口
部に隣接する該原子炉じゃへい壁内に該開閉扉の引込空
間を設け、かつ該引込空間に粉状、粒状または液状じゃ
へい材の注入口と注出口をそれぞれ設けたことを特徴と
するじゃへいブロック、にある。The present invention solves the above-mentioned drawbacks of the conventional shielding block, and provides a shielding block for the opening in the reactor shielding wall that has no space constraints, is easy to open and close, and can reduce radiation exposure. , the gist of which is that in the shielding block of the opening in the reactor shielding wall,
The opening/closing door provided at the opening is a retractable type, and a retracting space for the opening/closing door is provided in the reactor barrier wall adjacent to the opening, and powder, granular, or liquid debris is provided in the retracting space. It is a Jahei block that is characterized by having an inlet and an outlet for the material.
次に、本考案を図面によって説明する。Next, the present invention will be explained with reference to the drawings.
第３図は本考案の一実施例の正面図、第４図は第３図の
Ｂ−Ｂ断面図、第５図は第４図のＣ−Ｃ矢視図である。3 is a front view of one embodiment of the present invention, FIG. 4 is a sectional view taken along line BB in FIG. 3, and FIG. 5 is a view taken along line C-C in FIG. 4.
図において、本実施例は原子炉じゃへい壁３の開口部の
配管貫通部２ａに設けた開閉扉４を引込式とし、配管貫
通部２ａに隣接する左右の原子炉じゃへい壁３内に開閉
扉４の引込空間６を設け、かつ引込空間６に粉状、粒状
または液状じゃへい材の注入ロアと注出口８とをそれぞ
れ設けた構成である。In the figure, in this embodiment, the opening/closing door 4 provided at the pipe penetration part 2a of the opening of the reactor shielding wall 3 is a retractable type, and the door 4 can be opened and closed inside the left and right reactor shielding walls 3 adjacent to the piping penetration part 2a. The door 4 has a lead-in space 6, and the lead-in space 6 is provided with an injection lower and a spout 8 for powdered, granular, or liquid detergent, respectively.
原子炉じゃへい壁３は通常外壁を鋼板で構成された構造
物の内部にコンクリートを充填したものであり、開閉扉
４も原子炉じゃへい壁３と同様な構造とするが、必要に
応じ、鉛、鉄板等じゃへい効果の大きい材料を用いて厚
さを薄くすることもできる。The reactor barrier wall 3 is usually a structure whose outer wall is made of steel plates and is filled with concrete, and the opening/closing door 4 has the same structure as the reactor barrier wall 3, but if necessary, The thickness can also be reduced by using a material with a large blocking effect, such as lead or iron plate.
原子炉じゃへい壁３内の開閉扉４の引込空間６には扉４
の閉時には粉状、粒状または液状のしゃへい材を注入ロ
アより注入して充填させることにより、引込空間６部分
に十分なしゃへい効果を付与することができる。There is a door 4 in the lead-in space 6 of the opening/closing door 4 in the reactor jacket wall 3.
By injecting powdered, granular, or liquid shielding material from the injection lower when closing, a sufficient shielding effect can be imparted to the drawing space 6 portion.
上記粉状、粒状または液状じゃへい材としては鉛球、鋼
球、鉄粉（砂鉄等）、セメント粉または球、ポリエチレ
ン球、水またはこれらの混合物を用いる。As the powdery, granular or liquid repellent material, lead balls, steel balls, iron powder (such as iron sand), cement powder or balls, polyethylene balls, water, or a mixture thereof are used.
ただし、水と鉄系品およびセメントの組合せは固化する
ため使用しない。However, do not use a combination of water, iron-based products, and cement because it will solidify.
この構成によって、供用期間中検差等において閉位置に
ある開閉扉４を開とするときには、まず引込空間６内に
充填しであるじやへい材を注出口８より注出して引込空
間６を空にしてから、開閉扉４を移動させこの引込空間
６内に引き込む。With this configuration, when opening the opening/closing door 4 which is in the closed position during inspection or the like during the service period, first pour out the same material filled in the drawing space 6 from the spout 8 to empty the drawing space 6. After that, the opening/closing door 4 is moved and drawn into this drawing space 6.
所定の検査が終了し、開閉扉４を閉とするときは開閉扉
４をもとの閉位置に移動させた後、空状態の引込空間６
にじゃへい材を注入ロアより注入充填する。When the predetermined inspection is completed and the opening/closing door 4 is to be closed, the opening/closing door 4 is moved to the original closed position, and then the empty drawing space 6 is opened.
Inject and fill the Nijahei material from the injection lower.
これら注入ロアおよび注出口８にはそれぞれプラグを設
置し、注出入操作はそれぞれのキャップを除去、再設置
することによって行なう。Plugs are installed in each of the injection lower and pouring port 8, and pouring/inputting operations are performed by removing and reinstalling the respective caps.
この開閉扉４の開閉はギヤ駆動、動力駆動とすることに
より、さらに容易にすることができる。The opening and closing of the opening/closing door 4 can be further facilitated by gear drive or power drive.
また、上記しゃへい材の注出入については注出口を放射
能濃度の低い場所に設置し、ここから注出入配管をそれ
ぞれの注入口、注出口まで設置することにより、放射線
被曝の低減がさらに可能となる。In addition, for pouring in and out of the above-mentioned shielding material, it is possible to further reduce radiation exposure by installing the spout in a place with low radioactivity concentration and installing piping from there to the respective inlet and spout. Become.
本考案のしゃへいブロックは上記の配管貫通部以外の開
口部、たとえば検査機器搬出入用等の開口部にも適用で
きるものである。The shielding block of the present invention can be applied to openings other than the above-mentioned piping penetrations, such as openings for carrying in and out of inspection equipment.
本考案の効果は次の通りである。The effects of the present invention are as follows.
（１） スペース上の制約がない。(1) There are no space constraints.
すなわち、開閉扉が引込式であるので、配管貫通部等の
開口前面に開閉扉の開閉スペース、しやへいブロックの
引出しスペース等を必要とせず、また原子炉じゃへい壁
を貫通後近接してエルボ等が設置されていても何等問題
はない。In other words, since the opening/closing door is retractable, there is no need for opening/closing space for the opening/closing door or drawer space for the shield block in front of the opening of the pipe penetration part, etc. There is no problem even if elbows etc. are installed.
（２）開閉扉の開閉が容易である。(2) The opening/closing door is easy to open and close.
すなわち、開閉扉のみが重量が大であるが、引込式であ
るので、レール上を滑走させることにより、比較的容易
に移動可能である。That is, only the opening/closing door is heavy, but since it is retractable, it can be moved relatively easily by sliding on the rail.
さらに、開閉扉にギヤ駆動、動力駆動を組み合せること
によって、極めて容易に開閉ができる。Furthermore, by combining gear drive and power drive with the opening/closing door, it can be opened and closed extremely easily.
（３）放射線被曝を低減できる。(3) Radiation exposure can be reduced.
すなわち、開閉扉の開閉に要する人数、時間が従来例に
比して著しく低減できるからである。That is, the number of people and time required to open and close the door can be significantly reduced compared to the conventional example.
特に、しやへい材の注出入を低放射能領域で行なえば、
更に格段の低減効果が得られる。In particular, if the injection of shiyahei material is carried out in a low radioactivity area,
Furthermore, a significant reduction effect can be obtained.
本考案は、以上のごとく、スペース上の制約がなく、開
閉が容易でかつ放射線被曝を低減できる原子炉じゃへい
壁の開口部のしゃへいブロックを提供するもので、原子
炉容器に接続する配管の検査対策上きわめて有用である
。As described above, the present invention provides a shielding block for the opening in the reactor shielding wall that does not have space constraints, is easy to open and close, and can reduce radiation exposure. This is extremely useful for inspection measures.
第１図は従来の原子炉じゃへい壁の配管貫通部のしゃへ
いブロックの一例の正面図、第２図は第１図のＡ−Ａ断
面図、第３図は本考案の一実施例の正面図、第４図は第
３図のＢ−Ｂ断面図、第５図は第４図のＣ−Ｃ矢視図で
ある。
図において、１・・・原子炉容器、２・・・配管、２ａ
・・・配管貫通部、３・・・原子炉しやへい壁、４・・
・開閉扉、５・・・保温材、６・・・引込空間、７・・
・しやへい相性入口、８・・・しやへい相性出口、１０
１・・・原子炉容器、１０２・・・貫通配管、１０３・
・・原子炉しやへい壁、１０４・・・鋼鉄製扉、１０５
・・・保温材、１０６・・・切欠き部。Fig. 1 is a front view of an example of a conventional shielding block of a piping penetration part of a reactor shielding wall, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a front view of an embodiment of the present invention. 4 is a sectional view taken along the line B-B in FIG. 3, and FIG. 5 is a view taken along the line C-C in FIG. 4. In the figure, 1... Reactor vessel, 2... Piping, 2a
...Pipe penetration, 3...Reactor shield wall, 4...
・Opening/closing door, 5... Heat insulation material, 6... Retractable space, 7...
・Shiyahei compatibility entrance, 8...Shiyahei compatibility exit, 10
1... Reactor vessel, 102... Penetration piping, 103.
... Nuclear reactor wall, 104 ... Steel door, 105
...Heat insulation material, 106...Notch part.
Claims (1)
該開口部に設けた開閉扉を引込式とするとともに該開口
部に隣接する該原子炉じゃへい壁内に該開閉扉の引込空
間を設けかつ該引込空間に粉状、粒状または液状じゃへ
い材の注入口と注出口をそれぞれ設けたことを特徴とす
るじゃへいブロック。At the opening in the reactor wall, in the reactor block,
The opening/closing door provided at the opening is a retractable type, and a retracting space for the opening/closing door is provided in the reactor barrier wall adjacent to the opening, and a powder, granular, or liquid barrier material is provided in the retracting space. A Jahei block characterized by having an inlet and an outlet respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979018401U JPS5914800Y2 (en) | 1979-02-15 | 1979-02-15 | Shiyahei Block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979018401U JPS5914800Y2 (en) | 1979-02-15 | 1979-02-15 | Shiyahei Block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55118199U JPS55118199U (en) | 1980-08-21 |
| JPS5914800Y2 true JPS5914800Y2 (en) | 1984-05-01 |
Family
ID=28845587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979018401U Expired JPS5914800Y2 (en) | 1979-02-15 | 1979-02-15 | Shiyahei Block |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5914800Y2 (en) |
-
1979
- 1979-02-15 JP JP1979018401U patent/JPS5914800Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55118199U (en) | 1980-08-21 |
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