JPS59174735A - Method and apparatus for decontaminating equipment contaminated by radioactivity - Google Patents
Method and apparatus for decontaminating equipment contaminated by radioactivityInfo
- Publication number
- JPS59174735A JPS59174735A JP58050256A JP5025683A JPS59174735A JP S59174735 A JPS59174735 A JP S59174735A JP 58050256 A JP58050256 A JP 58050256A JP 5025683 A JP5025683 A JP 5025683A JP S59174735 A JPS59174735 A JP S59174735A
- Authority
- JP
- Japan
- Prior art keywords
- glass particles
- lead borate
- decontaminated
- borate glass
- contaminated
- 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
-
- 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
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/001—Decontamination of contaminated objects, apparatus, clothes, food; Preventing contamination thereof
- G21F9/005—Decontamination of the surface of objects by ablation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C11/00—Selection of abrasive materials or additives for abrasive blasts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
- B24C9/006—Treatment of used abrasive material
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Food Science & Technology (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の技術分野１
本発明は放射能で汚染された各種機器、容器または配管
（以下これらを単に原子力系機器と記す）の除染方法お
よびその装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention 1] The present invention relates to a method and an apparatus for decontaminating various equipment, containers, or piping (hereinafter referred to simply as nuclear equipment) contaminated with radioactivity.
［発明の技術的背景］
運転稼動中の原子力発電所および実験装置等の原子力系
機器は、放射能により汚染され、使用頻度とともにその
汚染レベルは１肩するので゛除染する必要がある。また
、国内法規および原子炉特有の法規からこれらの原子力
系機器の検査（定検）も厳しい方向に進んでいる。[Technical Background of the Invention] Nuclear power plants in operation and nuclear power equipment such as experimental equipment are contaminated with radioactivity, and as the level of contamination increases with the frequency of use, it is necessary to decontaminate them. In addition, due to domestic laws and regulations specific to nuclear reactors, inspections (regular inspections) of these nuclear power equipment are becoming stricter.
しかして、これらの動向に伴って前記原子力系機器のよ
り一層確実な除染方法の開発が望まれＣいる。In line with these trends, there is a desire to develop a more reliable decontamination method for nuclear equipment.
従来の放射能汚染の除染方法の１つとして、第１図にそ
の基本構成を示すソーダ石灰ガラス粒子を用いた表面処
理装置が知られている。As one of the conventional decontamination methods for radioactive contamination, a surface treatment device using soda lime glass particles, the basic configuration of which is shown in FIG. 1, is known.
すなわち、第１図におい゛Ｃ１被除染休１にホーニング
ガン２から高圧空気と一緒にソータ石灰ガラス粒子が噴
射され、被除染体１の汚染面を清浄化づる。ここで、被
除染体１とホーニングガン２はフード３内に配置され、
フード３にはブロア４に接続する回収配管３ａと、ソー
ダ石灰ガラス粒子製造装置５に接続された貯槽６からの
供給配管６ａと、高圧空気８７からの圧力給気配管９と
が接続されている。またブロア４と貯槽６との間を接続
する配管４ａには廃棄処理装置８に接続するバイパス配
管８ａが接続されている。That is, in FIG. 1, during decontamination pause 1 (C1), sorter lime glass particles are injected from the honing gun 2 together with high-pressure air to clean the contaminated surface of the object 1 to be decontaminated. Here, the object to be decontaminated 1 and the honing gun 2 are placed inside the hood 3,
The hood 3 is connected to a recovery pipe 3a connected to the blower 4, a supply pipe 6a from a storage tank 6 connected to the soda lime glass particle manufacturing device 5, and a pressure air supply pipe 9 from high pressure air 87. . Further, a bypass pipe 8a that connects to a waste treatment device 8 is connected to a pipe 4a that connects the blower 4 and the storage tank 6.
ところで、ソーダ石灰ガラス粒子は製造装置５て・製造
され貯槽６に移送される。貯槽６の下方には高圧空気源
７から送られた高圧空気が通流し、その高圧空気により
前記ソーダ石灰カラス粒子に噴出圧力が与えられ供給配
管６ａを通しホーニングカン２に石灰ガラス粒子が導ひ
かれる。小−ユングガン２には配管９を通って高圧空気
が流れているため、前記ソーダ石灰ガラス粒子にはざら
に噴出圧力が附与され、ホーニングガン２により被除染
体１の汚染面に直接前記ソーダ石灰ガラス粒子を高速で
噴出させて衝撃時の衝撃力によって汚染面を浄化し表面
処理する。汚染面を衝撃した後の落下したソーダ石灰ガ
ラス粒子はフード３内で回収され回収配管３ａを通つ°
Ｃブロアー４により貯槽６に移送される。そして再使用
されるか、またはバイパス配管８ａを通して廃棄処理装
置８に移送され、廃棄処理される。Incidentally, the soda lime glass particles are manufactured by a manufacturing device 5 and transferred to a storage tank 6. High-pressure air sent from a high-pressure air source 7 flows below the storage tank 6, and the high-pressure air applies jetting pressure to the soda lime glass particles, and the lime glass particles are guided to the honing can 2 through the supply pipe 6a. Ru. Since high-pressure air is flowing through the small-jung gun 2 through the pipe 9, a rough ejection pressure is applied to the soda-lime glass particles, and the honing gun 2 directly hits the contaminated surface of the object 1 to be decontaminated. Soda-lime glass particles are ejected at high speed to clean and treat contaminated surfaces using the impact force upon impact. The fallen soda lime glass particles after impacting the contaminated surface are collected in the hood 3 and passed through the collection pipe 3a.
It is transferred to the storage tank 6 by the C blower 4. Then, it is either reused or transferred to the waste treatment device 8 through the bypass piping 8a and disposed of.
［背景技術の問題点］
しかして、上記の表面処理装置は、塗装の前処理または
表面を光沢面に仕上げる表面処理に対しではかなり十分
な効果を持っている。[Problems with Background Art] However, the above-mentioned surface treatment apparatus has a fairly sufficient effect in pre-treatment for painting or surface treatment for finishing the surface into a glossy surface.
しかしながら、前記原子力系機器に対してこの・装置を
利用すると、ソーダ石灰ガラス粒子の密度が１．５（＋
／（−１１’と小さいため、衝撃力が弱く十分な除染効
果を得ることが難しい。また、一度使用したソーダ石灰
ガラス粒子を洗浄せずに再使用すると、折角除染された
面が再汚染するクロスコンタミネーションのため、この
従来の方法を原子力系機器への除染に使用することはぐ
きない欠点がある。However, when this device is used for the nuclear power equipment, the density of soda lime glass particles is 1.5 (+
/(-11'), so the impact force is weak and it is difficult to obtain a sufficient decontamination effect.Also, if soda lime glass particles that have been used once are reused without cleaning, the decontaminated surface may be reused. Due to cross-contamination, this conventional method has drawbacks that prevent it from being used to decontaminate nuclear equipment.
［発明の目的］
本発明は上記欠点を除去するためになされたものＣ，Ｍ
固体廃棄物の処理、使用中機器の、工具類の除染に際し
く十分な除染効果が期待Ｃき、かつ再汚染をなくした放
射能ぐ汚染された機器の除染方法およびそ、の装置を提
供りることを目的とする。[Object of the invention] The present invention has been made to eliminate the above-mentioned drawbacksC, M
A method and device for decontaminating equipment contaminated with radioactivity, which is expected to have a sufficient decontamination effect when processing solid waste, decontaminating equipment and tools in use, and which eliminates re-contamination. The purpose is to provide the following.
［発明の概要］
すなわち本発明は、ホウ酸鉛カラス粒子に噴出圧力を与
えて、例えば金属表面に付着した放射能物質を除去する
汚染面に噴出さけ、該ホウ酸鉛ガラス粒子の衝突時の衝
突力で前記汚染面を除染する放射能で汚染された機器の
除染方法Ｃある。またこの除染方法を達成するために、
ホウ酸鉛ガラス粒子に噴出圧力を加える高圧空気源と、
この高圧空気源から噴出圧力が附与されたホウ酸鉛ガラ
ス粒子を被除染体の汚染面に向けて噴出するホーニング
ガンと、このホーニングガンから噴出したホウ酸鉛ガラ
ス粒子を洗浄する洗浄装置と、この洗浄装置で洗浄した
ホウ酸鉛ガラス粒子を乾燥する乾燥装置と、この乾燥装
置で乾燥したホウ酸鉛ガラス粒子を節分する分級装置と
から構成されたことを特徴とする放射能で汚染された機
器の除染装置である。[Summary of the Invention] That is, the present invention applies ejection pressure to lead borate glass particles and ejects them onto a contaminated surface to remove radioactive substances attached to a metal surface, for example. There is a decontamination method C for equipment contaminated with radioactivity, in which the contaminated surface is decontaminated by collision force. In order to achieve this decontamination method,
a high pressure air source that applies ejection pressure to the lead borate glass particles;
A honing gun that ejects lead borate glass particles to which ejection pressure is applied from this high-pressure air source toward the contaminated surface of the object to be decontaminated, and a cleaning device that cleans the lead borate glass particles ejected from this honing gun. , a drying device for drying the lead borate glass particles washed by this washing device, and a classification device for sorting the lead borate glass particles dried by this drying device. This is a decontamination device for equipment that has been decontaminated.
ここで、ホウ酸鉛ガラスには３種類のものがあり、酸に
可溶で密度が２．５〜３．０（１／ｃ＋／である。それ
らの化学式は以下のとおりＣある。Here, there are three types of lead borate glasses, which are soluble in acids and have a density of 2.5 to 3.0 (1/c+/). Their chemical formulas are C as shown below.
■ Ｂ２Ｏ３−Ｐｂ Ｏ
■ ８２０３−Ｐｂ ０−Ｚｎ Ｏ
■ Ｂ２０３−Ｐｂ ０−Ｚｎ ０−ＡＪ２２０３Ｓｉ
０２
これらのホウ酸鉛ガラスを使用することによって相互汚
染（クロスコンタミネーション）および二次廃棄物のω
を少なくすることができる。■ B2O3-Pb O ■ 8203-Pb 0-Zn O ■ B203-Pb 0-Zn 0-AJ2203Si
02 The use of these lead borate glasses reduces cross-contamination and secondary waste.
can be reduced.
［発明の実施例］
杯下第２図を参照して本発明に係る装置の−実施例を説
明する。第２図中第１図と同一部分は同一符号で示して
いる。[Embodiments of the Invention] An embodiment of the apparatus according to the present invention will be described with reference to FIG. 2 below. The same parts in FIG. 2 as in FIG. 1 are indicated by the same reference numerals.
第２図におい−Ｃ１被除染休１とホーニングガン２とは
フード３内に配置されている。フード３の下部は回収配
管３ａを介しでブロア４に接続されている。ブロア４は
洗浄装置１０の上流側に接続され、洗浄装置１０の下流
側は乾燥装置としての電気炉１１に接続しでいる。電気
炉１１の下流側は分級装置１２に接続しＣいる。分級装
置１２は貯槽６および廃棄処理装＠８にそれぞれ配管１
２ａ、１２ｂを介しＣ接続している。また、ブロア４の
下流側と分級装＠１２の配管１２ａとはバイパス配管１
４によって接続している。さらに洗浄装置１０の下流側
と廃棄処理装置８とは配管１３により接続している。In FIG. 2, the C1 decontamination chamber 1 and the honing gun 2 are placed inside the hood 3. The lower part of the hood 3 is connected to a blower 4 via a recovery pipe 3a. The blower 4 is connected to the upstream side of the cleaning device 10, and the downstream side of the cleaning device 10 is connected to an electric furnace 11 as a drying device. The downstream side of the electric furnace 11 is connected to a classifier 12. The classification device 12 has piping 1 connected to the storage tank 6 and the waste treatment device @8.
C connection is made via 2a and 12b. In addition, the downstream side of the blower 4 and the piping 12a of the classifier @12 are connected to the bypass piping 1.
Connected by 4. Further, the downstream side of the cleaning device 10 and the waste treatment device 8 are connected by a pipe 13.
しかしＣ１木発明に係る装置は、主にホウ酸鉛ガラス粒
子を製造する製造装置５と被除染体１に噴出したホウ酸
鉛ガラス粒子を酸くＶａ酸、硝酸等）Ｃ洗浄する洗浄装
置１０と、酸洗浄した前記ホウ酸鉛ガラス粒子を加熱乾
燥する電気炉１１と加熱乾燥したホウ酸鉛ガラス粒子を
節分する分級装置１２とから構成され゛（いる。この分
級装置１２【まホウ酸鉛ガラス粒子の粒径が８０μ未満
で′あ＊１ Ｇ１廃棄処理装置８へ、８０μ以上であれ
ば貯槽６へ移送する。However, the apparatus according to the C1 invention mainly consists of a manufacturing apparatus 5 for manufacturing lead borate glass particles and a cleaning apparatus for cleaning lead borate glass particles ejected onto the object 1 to be decontaminated with acid (Vacid, nitric acid, etc.). 10, an electric furnace 11 for heating and drying the acid-washed lead borate glass particles, and a classifier 12 for dividing the heat-dried lead borate glass particles. If the particle size of the lead glass particles is less than 80 μm, they are transferred to the G1 waste treatment device 8, and if they are 80 μm or more, they are transferred to the storage tank 6.
次に上記装置の作用を説明する。Next, the operation of the above device will be explained.
製造装置５で製造したホウ酸鉛ガラス粒子は、高圧空気
源７により噴出圧力が与えられ供給配管６ａを通して、
ホーニングガン２に達し、その／１＼−ニングガン２か
ら高速のホウ酸鉛ガラス粒子が被除染体１の汚染面に向
けＣ噴出する。そしＣホウ酸鉛ガラス粒子の衝突時の衝
撃力で被除染体１の汚染面を除染する。被除染体１に衝
突し、汚染したホウ酸鉛ガラス粒子はフード３内に回収
され、回収配管３ａを通してブロアー４を経て洗浄装置
１０に流入される。ホウ酸鉛ガラスは酸例えば硫酸、硝
酸等に溶けるため酸を収容した洗浄装置１０内でホウ酸
鉛ガラスの表面を酸除染し、また汚染面に衝突した際に
、破砕したホウ酸鉛ガラスの除去を行なう。酸除染した
ホウ酸鉛ガラスは電気炉１１に移送され【加熱乾燥され
る。乾燥したホウ酸鉛ガラス粒子は分級装置１２に送ら
れ、粒径が８０μ未満のものは配管１２ｂから廃棄処理
装置８に送り廃棄処理し、８０μ以上のものは配管１２
ａから貯槽６へ戻し再使用する。洗浄装置１０内の酸の
溶解ツノが減衰した場合は配管１３を流しで廃棄処理装
置８へ導き処Ｊ」する。The lead borate glass particles produced by the production device 5 are given ejection pressure by a high-pressure air source 7 and are passed through the supply pipe 6a.
The particles reach the honing gun 2, and high-speed lead borate glass particles are ejected from the honing gun 2 toward the contaminated surface of the object 1 to be decontaminated. Then, the contaminated surface of the object to be decontaminated 1 is decontaminated by the impact force generated when the C lead borate glass particles collide. The contaminated lead borate glass particles collide with the object to be decontaminated 1 and are collected in the hood 3 and flowed into the cleaning device 10 via the blower 4 through the collection pipe 3a. Since lead borate glass is soluble in acids such as sulfuric acid and nitric acid, the surface of the lead borate glass is decontaminated with acid in the cleaning device 10 containing acid, and the lead borate glass is crushed when it collides with a contaminated surface. Remove. The acid-decontaminated lead borate glass is transferred to an electric furnace 11 and heated and dried. The dried lead borate glass particles are sent to the classification device 12, those with a particle size of less than 80μ are sent to the waste treatment device 8 through the pipe 12b for disposal, and those larger than 80μ are sent to the waste treatment device 8 through the pipe 12b.
from a to the storage tank 6 for reuse. When the dissolved acid in the cleaning device 10 has weakened, the pipe 13 is led to the waste treatment device 8 through a sink for disposal.
なお第２図に示したように、フード３内ひ回収したホウ
酸１））ガラス粒子を直接貯ＩＷ６へ移送しｌこい場合
にはバイパス配管１４を介しＣ行なえばよい。As shown in FIG. 2, if the boric acid 1)) glass particles collected in the hood 3 are to be directly transferred to the storage IW 6, this can be done via the bypass pipe 14.
第３図は本発明の他の実施例を示したもので、第２図と
同一部分は同一符号ひ示している。FIG. 3 shows another embodiment of the present invention, in which the same parts as in FIG. 2 are designated by the same reference numerals.
この実施例が前記第２図に示した実施例の装置と異なる
点は、洗浄装置１０の下部にバイブ１０ａを連結してこ
の洗浄装置１０内の酸をマイクロ波発振器１８から送ら
れたマイクロ波により加熱蒸発させる蒸発装置１５を設
け、この蒸発装置１５で蒸発した酸を凝縮ざぜる凝縮装
置１６を設けるとともに、この凝縮装置６１６で凝縮し
た酸をポンプ１７により洗浄装置１０へ送り込む配管１
６ａを設けたことにある。また蒸発装置１５から廃棄処
理装置８へ連通する配管ＩＦｉａｔ）設（）ている。This embodiment differs from the apparatus of the embodiment shown in FIG. An evaporator 15 is provided to heat and evaporate the acid, and a condenser 16 is provided to condense the acid evaporated by the evaporator 15, and a pipe 1 is provided to send the acid condensed by the condenser 616 to the cleaning device 10 by a pump 17.
6a was provided. Further, a pipe (IFiat) is provided which communicates from the evaporator 15 to the waste treatment device 8.
しかして、第３図の装置では、ホウ酸鉛ガラス粒子製造
装＠５で製造され、そのホウ酸鉛カラス粒子は高圧空気
源７により噴出圧力が附勺され、給気配管９を通つでホ
ーニングガン２により被除染体１の汚染面に向かっＣ噴
出し、ホウ酸鉛ガラス粒子の衝突時の１！１撃力で被除
染体１の汚染面を除染する。汚染面に衝突し、汚染した
ホウ酸鉛カラス粒子はフード３内で回収され、ブロアー
４を杆て洗２ｖＩ装置１０に移送される。ホウ酸鉛カラ
スは酸例えば硝酸に溶（プるため洗浄装ｒｆｌ １０内
でホウ酸鉛ガラスの表面の除染と破砕したホウ酸鉛カラ
スの除去を行なう。そしＣ除染したホウ酸鉛ガラスを電
気炉１１に移送し加熱乾燥する。乾燥したホウ酸鉛ガラ
ス粒子は分級装置１２により粒径８０μ未満のものは廃
棄処理装置８て゛処理し、８０μ以上のものは貯桁６へ
戻し再使用覆る。In the apparatus shown in FIG. 3, the lead borate glass particles are manufactured by the lead borate glass particle manufacturing apparatus @5, and the ejection pressure is applied to the lead borate glass particles by the high pressure air source 7, and the particles are passed through the air supply pipe 9. C is ejected by the honing gun 2 toward the contaminated surface of the object 1 to be decontaminated, and the contaminated surface of the object 1 to be decontaminated is decontaminated with a 1:1 impact force when the lead borate glass particles collide. The contaminated lead borate glass particles that collide with the contaminated surface are collected in the hood 3, passed through the blower 4, and transferred to the washing 2vI device 10. The lead borate glass is dissolved in an acid such as nitric acid, so the surface of the lead borate glass is decontaminated and the crushed lead borate glass is removed in a cleaning device RFL 10. The dried lead borate glass particles are transferred to an electric furnace 11 and dried by heating.The dried lead borate glass particles are classified by a classifier 12, and those with a particle size of less than 80μ are processed in a waste treatment device 8, and those larger than 80μ are returned to the storage 6 for reuse. cover
一方、洗浄装置１０内の汚染した硝酸はパイプ１０ａを
通して蒸発装置１５へ移送され、マイクロ波発振器１８
から送られたマイクロ波により加熱され蒸発する。蒸発
した硝酸は凝縮装置１６へ送られ溶液となり、移送ポン
プ１７を経′Ｃ洗浄装置１０へ戻され再使用される。On the other hand, the contaminated nitric acid in the cleaning device 10 is transferred to the evaporator 15 through the pipe 10a, and the microwave oscillator 18
It is heated and evaporated by microwaves sent from. The evaporated nitric acid is sent to the condensing device 16 to become a solution, and is returned to the carbon cleaning device 10 through the transfer pump 17 for reuse.
−ｈ、蒸発装置１５に残った乾固物は配管１５ａを通っ
て廃棄処理装置８に送られその装置８′Ｃ−処理される
。なお蒸発装Ｆｊ １５の加熱源はマイクロ波発振器１
８に限らず抵抗式ヒータ等を用いＣもよい。-h, the dry solids remaining in the evaporator 15 are sent to the waste treatment device 8 through the pipe 15a and treated there. The heating source of the evaporator Fj 15 is the microwave oscillator 1.
Not limited to 8, C may also be used using a resistance type heater or the like.
［発明の効果］
以上説明したように本発明によれば、従来使用されてい
たソーダ石灰ガラス粒子よりも密度が大きいホウ酸鉛ガ
ラス粒子を使用して被除染体の汚染面に噴出すれば衝撃
力が増大し、十分な除染効果を得ることができる。また
、ホウ酸鉛ガラスは酸に溶Ｍするため一度使用したホウ
酸鉛ガラス粒子を洗浄袋１置で洗浄すれば再使用しても
除染面の再汚染（クロスコンタミネーション）を防ぐこ
とがＣきる。[Effects of the Invention] As explained above, according to the present invention, lead borate glass particles having a higher density than conventionally used soda-lime glass particles are used to spray onto the contaminated surface of the object to be decontaminated. The impact force increases and sufficient decontamination effects can be obtained. In addition, since lead borate glass dissolves in acid, once used lead borate glass particles can be washed in a cleaning bag to prevent re-contamination (cross-contamination) of the decontaminated surface even if they are reused. C-kill.
さらに汚染した酸を蒸発、凝縮させ、洗浄液として採用
するため、酸の寿命が長くなり、酸自体の汚染を防止し
、二次廃棄物を少なくすることができる。また、蒸発装
置の加熱源にマイクロ波発振器を用いた場合には機器の
保守点検が容易になる利点がある。Furthermore, since the contaminated acid is evaporated and condensed and used as a cleaning solution, the life of the acid is extended, contamination of the acid itself is prevented, and secondary waste can be reduced. Furthermore, when a microwave oscillator is used as the heating source of the evaporator, there is an advantage that maintenance and inspection of the equipment becomes easier.
【図面の簡単な説明】
第１図は従来の表面処理装置を示す系統図、第２図およ
び第３図は本発明に係る放射能ぐ汚染された機器の除染
裂目の各々の実施例を示す系統図ひある。
１・・・・・・・・・・・・被除染体
２・・・・・・・・・・・・ホーニングガン３・・・・
・・・・・・・・フード
７・・・・・・・・・・・・高圧空気源８・・・・・・
・・・・・・廃棄処理装置１０・・・・・・・・・・・
・酸洗浄装置１１・・・・・・・・・・・・電気炉
１２・・・・・・・・・・・・分級装置代理人弁理士
須 山 佐 −[Brief Description of the Drawings] Figure 1 is a system diagram showing a conventional surface treatment device, and Figures 2 and 3 are examples of decontamination cracks for equipment contaminated with radioactivity according to the present invention. There is a system diagram showing this. 1......Decontaminated body 2...Honing gun 3...
......Hood 7...High pressure air source 8...
...Waste treatment equipment 10...
・Acid cleaning device 11・・・・・・・・・・Electric furnace 12・・・・・・・・・Classification device agent Patent attorney
Suyama Sa −
Claims (2)
力を附与しＣ噴出させ、該ホウ酸鉛ガラス粒子の衝突時
の衝撃力で前記被除染体の汚染面を除染することを特徴
とする放射能で汚染された機器の除染方法。(1) Apply pressure to the lead borate glass particles on the contaminated surface of the object to be decontaminated to eject C, and use the impact force when the lead borate glass particles collide to remove the contaminated surface of the object to be decontaminated. A method for decontaminating equipment contaminated with radioactivity.
源と、この高圧空気源から噴出圧力が附与されたホウ酸
鉛ガラス粒子を被除染体の汚染面に向けで噴出するホー
ニングガンと、このホーニングガンから噴出したホウ酸
鉛ガラス粒子を洗浄する酸洗浄装置と、この酸洗浄装置
で酸洗浄したホウ酸鉛ガラス粒子を乾燥する乾燥賛同と
、この乾燥装置Ｃ乾燥したホウ酸鉛ガラス粒子をｆｌｉ
ｉ分する分ｌＩｊ、装置とを具備したことを特徴とする
放射能で汚染された機器の除染装置。 〈３）ホウ酸鉛ガラス粒子を洗浄した後の汚染溶液を加
熱源により加熱しで蒸発させる蒸発装置と、この蒸発装
置で蒸発した酸を凝縮させる凝縮装置とを具備したこと
を特徴とする特ぎ１請求の範囲第２」記載の放射能Ｃ汚
染された機器の除染装置。(2) A high-pressure air source that applies ejection pressure to lead borate glass particles, and a honing gun that ejects the lead borate glass particles to which ejection pressure is applied from this high-pressure air source toward the contaminated surface of the object to be decontaminated. , an acid cleaning device for cleaning the lead borate glass particles ejected from this honing gun, a drying device for drying the acid-washed lead borate glass particles in this acid cleaning device, and a drying device C for drying the lead borate glass particles that have been acid washed by this acid cleaning device. fli glass particles
1. A decontamination device for equipment contaminated with radioactivity, characterized in that it is equipped with a decontamination device for equipment contaminated with radioactivity. <3) A special feature characterized by comprising an evaporator that heats and evaporates the contaminated solution after cleaning the lead borate glass particles using a heating source, and a condensation device that condenses the acid evaporated by the evaporator. 1. A decontamination device for radioactive C-contaminated equipment as set forth in claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58050256A JPS59174735A (en) | 1983-03-25 | 1983-03-25 | Method and apparatus for decontaminating equipment contaminated by radioactivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58050256A JPS59174735A (en) | 1983-03-25 | 1983-03-25 | Method and apparatus for decontaminating equipment contaminated by radioactivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59174735A true JPS59174735A (en) | 1984-10-03 |
Family
ID=12853894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58050256A Pending JPS59174735A (en) | 1983-03-25 | 1983-03-25 | Method and apparatus for decontaminating equipment contaminated by radioactivity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59174735A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2598020A1 (en) * | 1986-04-23 | 1987-10-30 | Framatome Sa | Process and device for decontamination of small-sized particles of hard material circulating in an impact shot blasting plant |
| JPH05507557A (en) * | 1990-06-05 | 1993-10-28 | シーメンス アクチエンゲゼルシヤフト | Decontamination methods and equipment for radioactively contaminated surfaces |
| WO1994029879A1 (en) * | 1993-06-08 | 1994-12-22 | Siemens Aktiengesellschaft | Installation for decontaminating radioactively contaminated surfaces |
| JP2008107094A (en) * | 2006-10-23 | 2008-05-08 | Ihi Corp | Waste blast material treating method |
-
1983
- 1983-03-25 JP JP58050256A patent/JPS59174735A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2598020A1 (en) * | 1986-04-23 | 1987-10-30 | Framatome Sa | Process and device for decontamination of small-sized particles of hard material circulating in an impact shot blasting plant |
| JPH05507557A (en) * | 1990-06-05 | 1993-10-28 | シーメンス アクチエンゲゼルシヤフト | Decontamination methods and equipment for radioactively contaminated surfaces |
| WO1994029879A1 (en) * | 1993-06-08 | 1994-12-22 | Siemens Aktiengesellschaft | Installation for decontaminating radioactively contaminated surfaces |
| JP2008107094A (en) * | 2006-10-23 | 2008-05-08 | Ihi Corp | Waste blast material treating method |
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