JPS6177793A - Burnable poison pellet - Google Patents
Burnable poison pelletInfo
- Publication number
- JPS6177793A JPS6177793A JP59199484A JP19948484A JPS6177793A JP S6177793 A JPS6177793 A JP S6177793A JP 59199484 A JP59199484 A JP 59199484A JP 19948484 A JP19948484 A JP 19948484A JP S6177793 A JPS6177793 A JP S6177793A
- Authority
- JP
- Japan
- Prior art keywords
- burnable poison
- pellets
- pellet
- particle size
- average particle
- 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
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
- Ceramic Products (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
交上立１
本発明は原子炉、特に、加圧木型原子炉に使用するパー
ナブルポイズンペレットに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to parnable poison pellets for use in nuclear reactors, particularly in pressurized wooden reactors.
良米亘３
バーナプルポイズンは原子核反応において余剰中性子を
吸収して核燃料のいわゆる燃焼を制御するとともに、自
らも燃焼して、自身の中性子吸収能を誠じ、核燃料の燃
焼度を恒常的に制御するものであり、従来上として熱中
性子吸収断面積の大きいＢ／１７がＡ １２０３−Ｂ、
Ｃおよびホウケイ酸ガラスのペレットの形で使用されて
いる。Wataru Ryomai 3 Burnapore poison absorbs surplus neutrons in nuclear reactions to control the so-called combustion of nuclear fuel, and also burns itself, maintaining its own neutron absorption ability and constantly controlling the burn-up of nuclear fuel. Conventionally, B/17, which has a large thermal neutron absorption cross section, is A 1203-B,
C and borosilicate glass in the form of pellets.
しかしながら、Ａ １２０！ −８４Ｇには次のような
欠点がある。However, A 120! -84G has the following drawbacks.
１ スウェリング率（経時的体積増加率）が比較的高い
。1 Swelling rate (volume increase rate over time) is relatively high.
２ ペレットを入れた被覆管が損傷した場合に、Ｂ、Ｃ
の管外への逸出速度が比較的早い。2 If the cladding tube containing pellets is damaged,
The rate of escape to the outside of the tube is relatively fast.
３ 含水素量の制御が比較的困難である。3. It is relatively difficult to control the hydrogen content.
また、ホウケイ酸ガラスには次のような欠点がある。Additionally, borosilicate glass has the following drawbacks.
１ 中性子吸収によって起るＢ よりのＨｅカス放出率
力）゛比較的高い。1. He gas release rate from B caused by neutron absorption) is relatively high.
２ スウェリング率に温度感受性がある。2. Swelling rate is temperature sensitive.
３ 被覆管に、ピンホールを生じた場合に、侵入する冷
却材に対する耐食性がよくない。3. If a pinhole is formed in the cladding tube, corrosion resistance against the coolant that enters is poor.
本発明は上記の従来のパーナブルポイズンペレットと中
性子吸収効果において変ることなく、使用時の挙動や製
作性などの面において改良された性能を有するバーナブ
ルポイズンペレ−７トを提供するものである。The present invention provides a burnable poison pellet that has the same neutron absorption effect as the conventional burnable poison pellets described above, but has improved performance in terms of behavior during use, ease of manufacture, etc. .
＆ｊ」と１虞
本発明によれば、ホウ素とＳ鳳、ＥｕまたはＧｄ金属か
らなるサーメットパーナブルボイズンペレフトが提供さ
れる。According to the present invention, there is provided a cermet pernable boson pellet made of boron and S, Eu or Gd metal.
雪−
実施例１
平均粒度０．６５ｇｍのＳｓ粉末１００ｇと平均粒度５
．５ル■のホウ素粉末４ｇを混合し、ざらに、潤滑剤と
してカーポラ−２クス０．３ｇ、結合剤としてボリヒニ
ルアルコール２ｇを添加して混合し、圧力１．０〜１５
トン／ｃ＋ａ２の範囲でプレスして、直径９．７ｍｍ、
高さｌＯ，８ａｍの圧粉体を形成し、アルゴン水素混合
ガス雰囲気中で１６００℃で３０〜６０分間焼結してペ
レットとした。Snow - Example 1 100 g of Ss powder with an average particle size of 0.65 gm and an average particle size of 5
．． Mix 4 g of boron powder of 5 ml, add 0.3 g of Carpolar 2x as a lubricant, and 2 g of borihinyl alcohol as a binder, mix, and press at a pressure of 1.0 to 15 ml.
Press in the range of ton/c+a2, diameter 9.7mm,
A green compact with a height of 1O, 8 am was formed and sintered at 1600°C for 30 to 60 minutes in an argon hydrogen mixed gas atmosphere to form pellets.
実施例２
平均粒度０．６５μｍのＥｕ粉末１００ｇと平均粒度５
．５ｇｍのホウ素粉末４ｇを混合し、さらに、潤滑剤と
してステアリフ０．３ｇ。結合剤としてヒドロキシプロ
ピルセルロース２ｇを添加して混合し、圧力１．０〜１
９５トン／ｃｍ２の範囲でプレスして直径９．７ｍｍ、
高さｉｏ、８ｍｍの圧粉体を形成し、アルゴン水素混合
ガス雰囲気中で１９００℃で３０〜６０分焼結してペレ
ットとした。Example 2 100 g of Eu powder with an average particle size of 0.65 μm and an average particle size of 5
．． Mix 4 g of 5 gm boron powder, and further add 0.3 g of Stearif as a lubricant. Add 2 g of hydroxypropyl cellulose as a binder and mix, then press at 1.0 to 1.
Pressed in the range of 95 tons/cm2 to a diameter of 9.7 mm,
A powder compact with a height of io and 8 mm was formed and sintered at 1900° C. for 30 to 60 minutes in an argon hydrogen mixed gas atmosphere to form pellets.
実施例３
平均粒度０．６５ル■のＧｄ粉末１００ｇと平均粒度５
．５ル厘のホウ素粉末４ｇを混合し、さらに潤滑剤とし
てステアリン０．３ｇ、結合剤としてポリエチレングリ
コール２ｇを添加して混合し、圧力１．０〜１．５トン
／Ｃ履２でプレスして直径９．７■、高さｉｏ、８ｍｍ
の圧粉体を形成し、アルゴン水素混合ガス雰囲気中で１
６００℃で３０〜６０分焼結してベレットとした。Example 3 100 g of Gd powder with an average particle size of 0.65 l and an average particle size of 5
．． 5 liters of boron powder was mixed, 0.3 g of stearin was added as a lubricant, and 2 g of polyethylene glycol was added as a binder. Diameter 9.7■, height io, 8mm
A green compact of 1 is formed, and 1
It was sintered at 600°C for 30 to 60 minutes to form a pellet.
本発明のパーナブルポイズンペレットは上記実施態様の
外に、ホットプレス法、ＣＶＤ （化学蒸着法）によっ
ても製造することができる。In addition to the above embodiments, the parnable poison pellets of the present invention can also be produced by a hot press method or a CVD (chemical vapor deposition method).
免豆立皇】
本発明のパーナブルポイズンペレットは従来ノパーナブ
ルポイズンペレフトに比較して、１ 反応度価値が大き
い、
２ 熱伝導度が大きい。The pernable poison pellets of the present invention have the following properties: 1. Higher reactivity value; 2. Higher thermal conductivity than conventional non-pernable poison pellets.
３ 高温高圧の水に対する耐食性が良好である。3. Good corrosion resistance against high temperature and high pressure water.
等の利点を宥する。Enjoy the benefits of etc.
Claims (1)
ットバーナブルポイズンペレット。1. Cermet burnable poison pellets made of boron and Sm, Eu or Gd metals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59199484A JPS6177793A (en) | 1984-09-26 | 1984-09-26 | Burnable poison pellet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59199484A JPS6177793A (en) | 1984-09-26 | 1984-09-26 | Burnable poison pellet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6177793A true JPS6177793A (en) | 1986-04-21 |
Family
ID=16408570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59199484A Pending JPS6177793A (en) | 1984-09-26 | 1984-09-26 | Burnable poison pellet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6177793A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04175699A (en) * | 1990-11-08 | 1992-06-23 | Power Reactor & Nuclear Fuel Dev Corp | Gadolinium thermal neutron shielding material |
-
1984
- 1984-09-26 JP JP59199484A patent/JPS6177793A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04175699A (en) * | 1990-11-08 | 1992-06-23 | Power Reactor & Nuclear Fuel Dev Corp | Gadolinium thermal neutron shielding material |
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