JPH04273099A - Hip volume reduction method for radioactive metal waste made of zircaloy - Google Patents
Hip volume reduction method for radioactive metal waste made of zircaloyInfo
- Publication number
- JPH04273099A JPH04273099A JP3434191A JP3434191A JPH04273099A JP H04273099 A JPH04273099 A JP H04273099A JP 3434191 A JP3434191 A JP 3434191A JP 3434191 A JP3434191 A JP 3434191A JP H04273099 A JPH04273099 A JP H04273099A
- Authority
- JP
- Japan
- Prior art keywords
- capsule
- zircaloy
- metal waste
- hip
- air
- 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
- 229910001093 Zr alloy Inorganic materials 0.000 title claims abstract description 28
- 239000010814 metallic waste Substances 0.000 title claims abstract description 27
- 230000002285 radioactive effect Effects 0.000 title claims abstract description 17
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 title claims abstract description 9
- 239000002775 capsule Substances 0.000 claims abstract description 86
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000007872 degassing Methods 0.000 claims description 22
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 abstract description 8
- 238000005253 cladding Methods 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 230000006835 compression Effects 0.000 abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 239000000446 fuel Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 238000003860 storage Methods 0.000 abstract 1
- 238000001513 hot isostatic pressing Methods 0.000 description 24
- 239000002915 spent fuel radioactive waste Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910007744 Zr—N Inorganic materials 0.000 description 1
- 229910002056 binary alloy Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
Landscapes
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は、使用済核燃料の再処
理工場で発生する使用済燃料被覆管等のジルカロイ製放
射性金属廃棄物をＨＩＰ（熱間静水圧プレス）処理によ
って減容処理する方法に関するものである。[Industrial Application Field] This invention is a method for reducing the volume of Zircaloy radioactive metal waste such as spent fuel cladding tubes generated in a spent nuclear fuel reprocessing plant by HIP (hot isostatic pressing) treatment. It is related to.
【０００２】0002
【従来の技術】使用済燃料被覆管等の放射性金属廃棄物
を減容して固化体とする方法としては、ＨＩＰ処理を用
いる方法が知られている。この方法により良好な固化体
を得るためには、ＨＩＰ処理の前工程として被処理物を
金属製カプセル内に充填、密封してカプセル内部を真空
脱気する必要がある。2. Description of the Related Art A method using HIP treatment is known as a method for reducing the volume of radioactive metal waste such as spent fuel cladding tubes and turning it into a solidified material. In order to obtain a good solidified product using this method, it is necessary to fill a metal capsule with the object to be treated, seal it, and evacuate the inside of the capsule in a vacuum as a pre-step to the HIP treatment.
【０００３】図２および図３を参照してＨＩＰ減容処理
方法を説明すると、先ず金属製カプセル１を、このカプ
セルの外径より僅かに大きい内径を有する金型１０に挿
入する（図２（ａ） ）。次いでこのカプセル１内に、
例えば使用済燃料被覆管の剪断物であるハル２を投入し
（図２（ｂ） ）、カプセル内径より僅かに小さい外径
を有する押棒１１で圧縮し（図２（ｃ） ）て約７０％
真密度比まで予備圧縮する。これによってカプセル１内
部のハル２は減容されるので、押棒１１を持ち上げて新
たなハルをカプセル１内に追加投入して再度押棒１１で
圧縮する。これを繰り返してハル２をカプセル上部まで
圧縮充填した後、金型の底板１０ａを下降させると同時
に押棒１１も下降させて、予備圧縮したハル２を充填し
た金属製カプセル１を金型１０から抜き出す（図２（ｄ
） ）。The HIP volume reduction treatment method will be explained with reference to FIGS. 2 and 3. First, a metal capsule 1 is inserted into a mold 10 having an inner diameter slightly larger than the outer diameter of the capsule (see FIG. 2). a) ). Next, in this capsule 1,
For example, the hull 2, which is a sheared piece of spent fuel cladding, is introduced (Fig. 2(b)) and compressed by the push rod 11, which has an outer diameter slightly smaller than the inner diameter of the capsule (Fig. 2(c)), to approximately 70%
Pre-compress to true density ratio. This reduces the volume of the hull 2 inside the capsule 1, so the push rod 11 is lifted, a new hull is added into the capsule 1, and the push rod 11 compresses it again. After repeating this process and compressing and filling the hull 2 to the top of the capsule, the bottom plate 10a of the mold is lowered and at the same time the push rod 11 is also lowered to extract the metal capsule 1 filled with the pre-compressed hull 2 from the mold 10. (Figure 2(d)
) ).
【０００４】圧縮充填したハル２を内部に収容した金属
製カプセル１の開口部を、図３（ａ）に示すような脱気
孔４を備えた蓋３で塞ぎ、脱気孔４を真空ポンプ１２に
連結してカプセル１内部の脱気を行う（図３（ａ） ）
。脱気完了後、脱気孔４に栓５を打ち込み（図３（ｂ）
）、脱気孔４と栓５との間、および蓋３とカプセル１
開口部縁との間を全周にわたって溶接する（図３（ｃ）
）。かくして得られた脱気密封したカプセル１をＨＩ
Ｐ処理して、カプセル内部のハルを減容化させる（図３
（ｄ） ）。 カプセル内部を脱気するのは、ＨＩＰ
処理工程で高圧下にカプセルを圧縮する際に、カプセル
内部に閉じ込められた空気等の気体成分によってカプセ
ル自体が破損するのを防止するためである。The opening of the metal capsule 1 containing the compressed and filled hull 2 is closed with a lid 3 equipped with a degassing hole 4 as shown in FIG. 3(a), and the degassing hole 4 is connected to a vacuum pump 12. Connect and degas the inside of capsule 1 (Figure 3(a))
. After completing the degassing, insert the plug 5 into the degassing hole 4 (Fig. 3(b)
), between the deaeration hole 4 and the plug 5, and between the lid 3 and the capsule 1
Weld the entire circumference to the opening edge (Figure 3(c)
). The thus obtained degassed and sealed capsule 1 is HI
P treatment to reduce the volume of the hull inside the capsule (Figure 3
(d) ). HIP degasses the inside of the capsule.
This is to prevent the capsule itself from being damaged by gas components such as air trapped inside the capsule when the capsule is compressed under high pressure in the processing process.
【０００５】図２に図示したハルの予備圧縮工程は、カ
プセル１内にハル２を充填した後にカプセル内でハルを
予備圧縮するものであるが、金型１０内で予備圧縮した
ハルをカプセル１内に充填してもよい。また、図３に示
した脱気密封工程では脱気孔４に栓５を打ち込んで密封
しているが、脱気孔を加熱して圧接することによって密
封する方式も採用できる。In the hull pre-compression process shown in FIG. 2, the hull 2 is filled into the capsule 1 and then the hull is pre-compressed within the capsule. It may be filled inside. Further, in the degassing and sealing step shown in FIG. 3, the degassing hole 4 is sealed by driving the plug 5, but a method of sealing the degassing hole by heating and pressing the degassing hole may also be adopted.
【０００６】[0006]
【発明が解決しようとする課題】上述した従来のＨＩＰ
減容処理方法においてはカプセル内部の脱気工程が不可
欠とされており、そのため脱気孔付の蓋を有する複雑な
形状の金属製カプセルを使用しなければならず、また脱
気装置としての真空ポンプ、さらには脱気終了後に脱気
孔を密封するための栓打ち込み装置、脱気孔の加熱装置
や圧接装置等が必要となる。また、カプセルの脱気孔面
積も大きくできないため、カプセル内部の真空度を高め
るために長時間（約７時間）の脱気時間が必要になる。[Problem to be solved by the invention] The above-mentioned conventional HIP
In the volume reduction treatment method, a deaeration process inside the capsule is essential, which requires the use of a complex-shaped metal capsule with a lid with a deaeration hole, and a vacuum pump as a deaeration device. Furthermore, a plug driving device, a heating device for the degassing hole, a pressure welding device, etc. are required to seal the degassing hole after the degassing is completed. Furthermore, since the area of the degassing hole in the capsule cannot be increased, a long time (about 7 hours) is required for degassing to increase the degree of vacuum inside the capsule.
【０００７】そこでこの発明は、従来のＨＩＰ減容処理
方法における上述したごとき問題点を解消することを目
的としてなされたものである。[0007] Therefore, the present invention was made with the object of solving the above-mentioned problems in the conventional HIP volume reduction processing method.
【０００８】[0008]
【課題を解決するための手段】本発明者等は、ジルコニ
ウム合金であるジルカロイがＯ２ やＮ２ といったガ
ス成分を吸蔵する特性があることに着目し、ＨＩＰ処理
すべき放射性金属廃棄物が特にジルカロイである場合に
は、圧縮充填した被処理金属廃棄物を含む金属製カプセ
ルの内部空気を脱気せずにカプセルを密封し、ＨＩＰ処
理を施すことができることを見出だした。[Means for Solving the Problems] The present inventors have focused on the fact that Zircaloy, a zirconium alloy, has the property of occluding gas components such as O2 and N2. It has been found that in some cases it is possible to seal and HIP a metal capsule containing compressed metal waste to be treated without evacuating the internal air of the capsule.
【０００９】すなわちこの発明の放射性金属廃棄物のＨ
ＩＰ減容処理方法は、金属製カプセルにジルカロイ製放
射性金属廃棄物を充填する工程、カプセル内で前記金属
廃棄物を予備圧縮する工程、予備圧縮した前記金属廃棄
物を含むカプセル内を脱気することなくカプセルを密封
する工程、および密封したカプセルにＨＩＰ処理を施す
工程からなることを特徴とするものである。That is, H of the radioactive metal waste of this invention
The IP volume reduction treatment method includes a step of filling a metal capsule with Zircaloy radioactive metal waste, a step of pre-compressing the metal waste inside the capsule, and deaerating the inside of the capsule containing the pre-compressed metal waste. This method is characterized by comprising a step of sealing the capsule without any damage, and a step of subjecting the sealed capsule to HIP treatment.
【００１０】なお、この発明においても従来の方法と同
様に、予備圧縮工程をカプセル内で行わずに、カプセル
外部で予備圧縮した金属廃棄物をカプセル内に充填して
もよい。[0010] In the present invention, as in the conventional method, the metal waste may be pre-compressed outside the capsule and filled into the capsule without performing the pre-compression step inside the capsule.
【００１１】[0011]
【作用】ジルカロイからなる放射性金属廃棄物を密封し
たカプセルにＨＩＰ処理を施すことにより、カプセル内
部の空気を構成するＯ２ やＮ２ といったガス成分は
ジルカロイ中に吸蔵され固溶される。従って、前処理と
してカプセル内の脱気工程を施さなくても、ＨＩＰ処理
の際にカプセル内の空気はジルカロイに吸蔵されるから
、高圧下でカプセルを圧縮しても内部空気によりカプセ
ルが破損する危険はない。[Operation] By subjecting a sealed capsule of radioactive metal waste made of Zircaloy to HIP treatment, gas components such as O2 and N2 that constitute the air inside the capsule are occluded and dissolved in the Zircaloy. Therefore, even if the capsule is not degassed as a pretreatment, the air inside the capsule is occluded by Zircaloy during HIP treatment, so even if the capsule is compressed under high pressure, the capsule will be damaged by the internal air. There's no danger.
【００１２】0012
【実施例】図１はこの発明の工程を順を追って模式的に
説明するものである。図１（ａ） は、ジルカロイ製放
射性金属廃棄物である使用済燃料被覆管のハル２を図２
に示した従来の予備圧縮処理と同様にして予備圧縮した
ものを充填したステンレス鋼製カプセル１に、蓋６を被
せた状態を示している。この図からわかるように蓋６に
は脱気孔を付ける必要がないから、単純な形状の蓋が使
用できる。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 schematically explains the steps of the present invention step by step. Figure 1(a) shows the hull 2 of a spent fuel cladding tube, which is radioactive metal waste made of Zircaloy.
A lid 6 is shown covering a stainless steel capsule 1 filled with a capsule pre-compressed in the same manner as the conventional pre-compression process shown in FIG. As can be seen from this figure, since there is no need to provide a deaeration hole in the lid 6, a lid with a simple shape can be used.
【００１３】なおカプセル外部で予め予備圧縮したハル
をカプセル内に充填することによって、図１（ａ） の
状態のカプセルとすることもできる。またカプセル１内
には、ジルカロイ製放射性金属廃棄物の他に、カプセル
内の隙間を埋めるためにステンレス鋼粉末のごとき金属
粉をジルカロイ製放射性金属廃棄物に対して約７重量％
程度まで充填してもよい。The capsule in the state shown in FIG. 1(a) can also be obtained by filling the capsule with a hull that has been pre-compressed outside the capsule. In addition to the Zircaloy radioactive metal waste, capsule 1 contains metal powder such as stainless steel powder in an amount of about 7% by weight based on the Zircaloy radioactive metal waste to fill the gaps in the capsule.
It may be filled to a certain extent.
【００１４】図１（ｂ） は密封工程を施した状態を示
しており、蓋６とカプセル１開口部縁との間が全周にわ
たって溶接されている。FIG. 1(b) shows a state in which the sealing process has been performed, in which the lid 6 and the opening edge of the capsule 1 are welded over the entire circumference.
【００１５】図１（ｃ） はＨＩＰ処理を施した状態を
示しており、カプセル１は等方的に加圧され変形し、カ
プセル内部に収容された放射性金属廃棄物は加圧加熱に
より減容化される。かくして得られた減容化固化体には
、その外周に脱気孔などの突起物がないため積み重ね保
管しやすくなる。[0015] Figure 1(c) shows the state after HIP treatment, in which the capsule 1 is isotropically pressurized and deformed, and the radioactive metal waste contained inside the capsule is reduced in volume by pressurization and heating. be converted into The volume-reduced solidified product thus obtained has no protrusions such as deaeration holes on its outer periphery, making it easy to stack and store.
【００１６】図３の従来のＨＩＰ処理工程と比較してわ
かるように、図１に示したこの発明のＨＩＰ処理におい
てはカプセル１内部の空気を真空脱気する脱気工程を施
していないから、ＨＩＰ処理時にはカプセル内に空気が
存在しているが、ジルカロイによりＯ２ ，Ｎ２ のガ
ス成分は吸蔵されるため、ＨＩＰ処理時の高圧下での圧
縮に際してカプセル内部空気によりカプセルが破損する
危険はない。As can be seen from the comparison with the conventional HIP process shown in FIG. 3, the HIP process of the present invention shown in FIG. Although air is present in the capsule during HIP processing, the gas components such as O2 and N2 are occluded by Zircaloy, so there is no risk of the capsule being damaged by the air inside the capsule during compression under high pressure during HIP processing.
【００１７】カプセル内に含まれるガス成分量と、ジル
カロイの吸蔵量との関係を実験により確認した結果を以
下に説明する。脱気工程を施さずに作製したＨＩＰ処理
後の固化体には、Ｏ２ が４２９０ｐｐｍ 、Ｎ２ が
１００ｐｐｍ 吸蔵されていた。通常、ジルカロイ製被
覆管中に含まれるガス成分は、Ｏ２ が１０００ｐｐｍ
（外国規格では≦１６００ｐｐｍ ）、Ｎ２ が３０
ｐｐｍ （ＡＳＴＭ規格では≦８０ｐｐｍ ）であるか
ら、Ｏ２ は３２９０ｐｐｍ （＝４２９０ｐｐｍ −
１０００ｐｐｍ ）、Ｎ２ は７０ｐｐｍ （＝１００
ｐｐｍ −３０ｐｐｍ ）がそれぞれ外部から吸蔵でき
る余地があることになる。The results of experiments to confirm the relationship between the amount of gas components contained in the capsule and the amount of Zircaloy stored will be explained below. The solidified body after HIP treatment, which was produced without performing a degassing step, contained 4290 ppm of O2 and 100 ppm of N2. Normally, the gas component contained in Zircaloy cladding contains 1000 ppm of O2.
(Foreign standards: ≦1600ppm), N2 is 30
ppm (≦80ppm according to ASTM standard), so O2 is 3290ppm (=4290ppm −
1000ppm), N2 is 70ppm (=100
ppm - 30 ppm) can be absorbed from the outside.
【００１８】上記の数値を用いて、重量Ｗｇのジルカロ
イが外部から吸蔵することができるＯ２ 量とＮ２ 量
を計算すると次式のようになる。Using the above numerical values, the amount of O2 and N2 that can be stored from the outside by Zircaloy having a weight of Wg is calculated as follows.
【００１９】
Ｏ２ ：３２９０×１０−６×Ｗ／１６＝２．０６×１
０−４×Ｗ （ｍｏｌ） …（１） 式Ｎ２ ：７０
×１０−６×Ｗ／１４＝５×１０−６×Ｗ （ｍｏｌ）
…（２） 式。O2: 3290×10−6×W/16=2.06×1
0-4×W (mol)...(1) Formula N2: 70
×10-6×W/14=5×10-6×W (mol)
...(2) Equation.
【００２０】一方、ジルカロイを真空度比７０％まで予
備圧縮してカプセルに充填した場合のカプセル内の空気
のＯ２ とＮ２ は次式で示される。On the other hand, when Zircaloy is pre-compressed to a vacuum ratio of 70% and filled into a capsule, the O2 and N2 of the air in the capsule is expressed by the following equation.
【００２１】ジルカロイの重量をＷｇ；ジルカロイの比
重を６．５（ｇ／ｃｃ）；カプセルの内容積をＶ （ｃ
ｃ） ＝Ｗ／（６．５×０．７）；
とすると、
Ｏ２ ：
［（Ｖ−Ｗ／６．５）×０．２０９３］／［２
２．４×１０３ （ｃｃ／ｍｏｌ）］ ＝６．１
６×１０−７×Ｗ （ｍｏｌ） …（３） 式 Ｎ
２ ：
［（Ｖ−Ｗ／６．５）×０．７８１０］／［２
２．４×１０３ （ｃｃ／ｍｏｌ）］ ＝２．３
０×１０−６×Ｗ （ｍｏｌ） …（４） 式。The weight of Zircaloy is Wg; the specific gravity of Zircaloy is 6.5 (g/cc); the internal volume of the capsule is V (c
c) =W/(6.5×0.7); Then, O2: [(V-W/6.5)×0.2093]/[2
2.4×103 (cc/mol)] =6.1
6×10-7×W (mol) …(3) Formula N
2: [(V-W/6.5)×0.7810]/[2
2.4×103 (cc/mol)] =2.3
0x10-6xW (mol)...(4) Formula.
【００２２】これらの式を比較すると下表のごとき関係
が得られる。このことから、カプセル内の空気はジルカ
ロイ中に充分に吸蔵できることがわかる。Comparing these equations, the relationships shown in the table below are obtained. This shows that the air inside the capsule can be sufficiently occluded in Zircaloy.
【００２３】[0023]
【００２４】また、Ｚｒ−Ｎの二元合金状態図において
、Ｏ２ の固溶限度は２９．１ａｔｏｍ％（９００℃）
、Ｎ２ のそれは２２ａｔｏｍ％（７００℃）である。
実際にはＯ２ 、Ｎ２ 、Ｈ２ 等が共存するため固溶
限度は低下するが、上述の空気量であれば充分固溶され
る範囲であるといえる。[0024] Furthermore, in the Zr-N binary alloy phase diagram, the solid solubility limit of O2 is 29.1 atom% (900°C).
, that of N2 is 22 atom% (700°C). In reality, the solid solubility limit is lowered due to the coexistence of O2, N2, H2, etc., but it can be said that the above-mentioned amount of air is within the range where sufficient solid solubility is achieved.
【００２５】[0025]
【発明の効果】以上説明したところからわかるようにこ
の発明によれば、被処理金属廃棄物であるジルカロイの
Ｏ２ およびＮ２ を吸蔵する特性を利用することによ
ってＨＩＰ処理の前処理である脱気工程を省略すること
ができるため、ＨＩＰ処理工程を簡略化することができ
る。Effects of the Invention As can be seen from the above explanation, according to the present invention, by utilizing the O2 and N2 occluding properties of Zircaloy, which is a metal waste to be treated, the degassing process, which is a pretreatment for HIP treatment, can be improved. Since this can be omitted, the HIP process can be simplified.
【００２６】また、脱気工程の省略によって、従来必要
であった脱気時間（約７時間）が必要でなくなり、脱気
装置としての真空ポンプ、さらには脱気終了後に脱気孔
を密封するための栓打ち込み装置、脱気孔の加熱装置や
圧接装置等も不要になる。Furthermore, by omitting the degassing step, the degassing time (approximately 7 hours) that was previously required is no longer required, and the vacuum pump as a degassing device, as well as sealing the degassing hole after the degassing is completed, is no longer necessary. This also eliminates the need for plug driving equipment, deaeration hole heating equipment, pressure welding equipment, etc.
【００２７】さらに、使用する金属製カプセルも脱気孔
がなくてよいから構造が簡単にできる。その結果、カプ
セルの加工費が低減でき、ＨＩＰ処理に際してのカプセ
ルの変形能が向上する。加えて、突起物のない固化体が
得られるから、積み重ね保管が可能になる。Furthermore, since the metal capsule used does not need to have a degassing hole, the structure can be simplified. As a result, the processing cost of the capsule can be reduced and the deformability of the capsule during HIP treatment can be improved. In addition, since a solidified product without protrusions can be obtained, it is possible to store the product in stacks.
【図面の簡単な説明】[Brief explanation of the drawing]
【図１】この発明のＨＩＰ処理方法を工程毎に順次示す
説明図。FIG. 1 is an explanatory diagram sequentially showing each step of the HIP treatment method of the present invention.
【図２】従来のＨＩＰ処理における予備圧縮工程を順次
示す説明図。FIG. 2 is an explanatory diagram sequentially showing preliminary compression steps in conventional HIP processing.
【図３】従来のＨＩＰ処理方法を工程毎に順次示す説明
図。
１…金属製カプセル、 ２…放射性金属廃棄物（ハル
）、３…カプセルの蓋、 ４…脱気孔、 ５…栓、
６…カプセルの蓋。FIG. 3 is an explanatory diagram showing a conventional HIP processing method step by step. 1... Metal capsule, 2... Radioactive metal waste (hull), 3... Capsule lid, 4... Deaeration hole, 5... Stopper,
6...Capsule lid.
Claims (2)
廃棄物を充填する工程、該カプセル内で該金属廃棄物を
予備圧縮する工程、予備圧縮した金属廃棄物を含む該カ
プセル内を脱気することなく該カプセルを密封する工程
、および密封した該カプセルにＨＩＰ処理を施す工程か
らなることを特徴とするジルカロイ製放射性金属廃棄物
のＨＩＰ減容処理方法。Claims 1: Filling a metal capsule with Zircaloy radioactive metal waste; pre-compressing the metal waste within the capsule; and deaerating the capsule containing the pre-compressed metal waste. 1. A HIP volume reduction treatment method for radioactive metal waste made of Zircaloy, comprising the steps of: sealing the capsule without removing the capsule; and subjecting the sealed capsule to HIP treatment.
する工程、予備圧縮した該金属廃棄物を金属製カプセル
内に充填する工程、予備圧縮した金属廃棄物を含む該カ
プセル内を脱気することなく該カプセルを密封する工程
、および密封した該カプセルにＨＩＰ処理を施す工程か
らなることを特徴とするジルカロイ製放射性金属廃棄物
のＨＩＰ減容処理方法。2. A step of pre-compressing Zircaloy radioactive metal waste, a step of filling the pre-compressed metal waste into a metal capsule, and degassing the inside of the capsule containing the pre-compressed metal waste. 1. A HIP volume reduction treatment method for radioactive metal waste made of Zircaloy, comprising the steps of: sealing the capsule without removing the capsule; and subjecting the sealed capsule to HIP treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3434191A JPH04273099A (en) | 1991-02-28 | 1991-02-28 | Hip volume reduction method for radioactive metal waste made of zircaloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3434191A JPH04273099A (en) | 1991-02-28 | 1991-02-28 | Hip volume reduction method for radioactive metal waste made of zircaloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04273099A true JPH04273099A (en) | 1992-09-29 |
Family
ID=12411439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3434191A Pending JPH04273099A (en) | 1991-02-28 | 1991-02-28 | Hip volume reduction method for radioactive metal waste made of zircaloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04273099A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0850199A (en) * | 1994-08-08 | 1996-02-20 | Kobe Steel Ltd | Method and device for volume-reducing treatment of radioactive metal waste containing zirconium alloy |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57960A (en) * | 1980-06-04 | 1982-01-06 | Takuya Yura | Tricycle |
| JPS57959A (en) * | 1980-06-04 | 1982-01-06 | Yamaha Motor Co Ltd | Seat for autobicycle and its manufacture |
| JPS5821600A (en) * | 1981-08-01 | 1983-02-08 | 株式会社神戸製鋼所 | Method of solidifying and volume-decreasing radioactive metal waste |
-
1991
- 1991-02-28 JP JP3434191A patent/JPH04273099A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57960A (en) * | 1980-06-04 | 1982-01-06 | Takuya Yura | Tricycle |
| JPS57959A (en) * | 1980-06-04 | 1982-01-06 | Yamaha Motor Co Ltd | Seat for autobicycle and its manufacture |
| JPS5821600A (en) * | 1981-08-01 | 1983-02-08 | 株式会社神戸製鋼所 | Method of solidifying and volume-decreasing radioactive metal waste |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0850199A (en) * | 1994-08-08 | 1996-02-20 | Kobe Steel Ltd | Method and device for volume-reducing treatment of radioactive metal waste containing zirconium alloy |
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