JPS62259009A - Eliminated state measuring method for radioactive material - Google Patents
Eliminated state measuring method for radioactive materialInfo
- Publication number
- JPS62259009A JPS62259009A JP60278032A JP27803285A JPS62259009A JP S62259009 A JPS62259009 A JP S62259009A JP 60278032 A JP60278032 A JP 60278032A JP 27803285 A JP27803285 A JP 27803285A JP S62259009 A JPS62259009 A JP S62259009A
- Authority
- JP
- Japan
- Prior art keywords
- measured
- hole
- measuring
- radioactivity
- plate
- 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
- 238000000034 method Methods 0.000 title claims description 14
- 239000012857 radioactive material Substances 0.000 title abstract description 5
- 239000002390 adhesive tape Substances 0.000 claims abstract description 5
- 239000000941 radioactive substance Substances 0.000 claims description 21
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract description 25
- 238000007789 sealing Methods 0.000 abstract description 18
- 230000003749 cleanliness Effects 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000010248 power generation Methods 0.000 abstract 1
- 235000013980 iron oxide Nutrition 0.000 description 11
- 238000005259 measurement Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000000126 substance 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
- Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は被測定面に付着している放射性物質。[Detailed description of the invention] (Industrial application field) The present invention relates to radioactive substances attached to a surface to be measured.
例えば原子力発電所用ポンプに使用されているシール部
品のシール面に付着している微小酸化鉄が初期の状態に
除去されたか否かを確認する放射性物質の除去状態測定
方法に関するものである。For example, the present invention relates to a method for measuring the removal status of radioactive substances to confirm whether minute iron oxides adhering to the sealing surface of a sealing part used in a pump for a nuclear power plant have been removed to an initial state.
（従来の技術）
従来、原子力発電所用ポンプに使用されているシール部
品のシール面に付若しでいる微小酸化鉄が初期の状態に
除去されたか否かを確認する際。(Prior Art) Conventionally, when checking whether minute iron oxides attached to or remaining on the sealing surface of seal parts used in pumps for nuclear power plants have been removed to their initial state.
７１チエツカーによるシール面のテーパー計測定方法が
実施されている。同テーパー量測定方法は。A method of measuring the taper of the seal surface using a 71 checker has been implemented. How to measure the taper amount.
シールを平坦な定盤上に静置し、付着物除去前及び除去
後に針をシール面に接触させて、付着物除去前及び除去
後のシール面のテーパー量（約３０ ８ｍ）の差を
測定することにより、付着物が初期の状態に除去された
か否かを確認する除去状態測定方法である。Place the seal on a flat surface plate, touch the needle to the seal surface before and after removing the deposits, and measure the difference in the taper amount (approximately 30 8 m) of the seal surface before and after removing the deposits. This is a method for measuring the state of removal to confirm whether or not the deposits have been removed to the initial state.
（発明が解決しようとする問題点）
前記従来のμチェッカーによるシール面のテーパー量測
定方法を原子力発電所用ポンプに使用されているシール
部品のシール面に通用した場合。(Problems to be Solved by the Invention) When the conventional method for measuring the amount of taper of a sealing surface using a μ checker is applied to the sealing surface of a sealing part used in a pump for a nuclear power plant.
測定時の定盤の精度、清浄度、及び測定作業者の熟練度
により、測定精度にバラツキを生じて、シール面上の付
着物が初期の状態に除去されたか否かを正確に確認でき
ないという問題があった。Due to the accuracy and cleanliness of the surface plate at the time of measurement, and the skill level of the measurement worker, measurement accuracy varies, making it impossible to accurately confirm whether the deposits on the seal surface have been removed to the initial state. There was a problem.
（問題点を解決するための手段）
本発明は前記の問題点に対処するもので、被測定面に何
着している放射性物質の放射能を同被測定面上にセット
した鉛板の貫通孔を介して対向するガイガーミュラー管
により測定し１次いで被測定面に付着している放射性物
質を粘着テープ等により除去し１次いで放射性物質を除
去した被測定面を同被測定面上にセットした鉛板の貫通
孔を介して対向するガイガーミュラー管により測定する
ことを特徴とした放射性物質の除去状態測定方法に係わ
り、その目的とする処は、放射性物質の除去状態を定盤
の精度、清浄度、及び測定作業者の熟練度に関係なく正
確に、容易に測定できる改良された放射性物質の除去状
態測定方法を供する点にある。(Means for Solving the Problems) The present invention addresses the above-mentioned problems. Measurement was carried out using Geiger-Mueller tubes facing each other through the hole, then the radioactive substances adhering to the surface to be measured were removed using adhesive tape, etc., and the surface to be measured from which the radioactive substances had been removed was set on the same surface to be measured. This method involves measuring the removal status of radioactive substances using Geiger-Mueller tubes facing each other through a through hole in a lead plate. An object of the present invention is to provide an improved method for measuring the state of removal of radioactive substances that can be accurately and easily measured regardless of the degree of radioactivity and the skill level of the measuring operator.
（作用）
本発明の放射性物質の除去状態測定方法は前記のように
放射性物質を除去する前及び除去した後の被測定面の状
態を、被測定面上にセットした鉛板の貫通孔を介して対
向するガイガーミュラー管により測定するので、放射性
物質の除去状態が定盤の精度、清浄度、及び測定作業者
の熟練度に関係なく正確に、容易に測定される。(Function) As described above, the radioactive substance removal state measuring method of the present invention measures the state of the surface to be measured before and after the removal of radioactive materials through the through-hole of a lead plate set on the surface to be measured. Since measurement is performed using Geiger-Mueller tubes facing each other, the state of removal of radioactive substances can be accurately and easily measured regardless of the accuracy and cleanliness of the surface plate and the skill level of the measuring operator.
（実施例）
次に本発明の放射性物質の除去状態測定方法の実施に使
用する測定装置の構成例を第１図により説明すると、（
１）がシール部品（フェイスプレー１１ 、 （ｌａ）
が同シール部品（１）のシール面、（２）が保護管、（
３）がガイガーミュラー管、（４）が鉛板、（５）が同
鉛板（４）に設けた貫通孔、（６）が遮蔽板、（７）が
上記ガイガーミュラー管（３）からスケーラ（８）（図
示せず）に延びた配線である。(Example) Next, an example of the configuration of a measuring device used to carry out the method for measuring the state of removal of radioactive substances of the present invention will be explained with reference to FIG.
1) Seal parts (Face play 11, (la)
is the sealing surface of the same seal part (1), (2) is the protection tube, (
3) is the Geiger-Mueller tube, (4) is the lead plate, (5) is the through hole provided in the lead plate (4), (6) is the shielding plate, and (7) is the scaler from the Geiger-Mueller tube (3). (8) This is a wiring extending to (not shown).
次に前記第１図に示す測定装置を使用して行われる放射
性物質の除去状態測定方法を具体的に説明する。原子力
発電所用ポンプに使用されているシール部品のシール面
に付着している微小酸化鉄の状態を第２図に示した。同
微小酸化鉄（ａ）は。Next, a method for measuring the state of removal of radioactive substances using the measuring apparatus shown in FIG. 1 will be explained in detail. Figure 2 shows the state of minute iron oxides adhering to the sealing surfaces of seal parts used in nuclear power plant pumps. The same minute iron oxide (a) is.
シール部品（１）のシール面（ｌａ）に一様に付着せず
。It did not adhere uniformly to the sealing surface (la) of the sealing part (1).
外周側よりも内周側の方に多く付着して、シール機能を
低下させている。同微小酸化鉄（ａ）は、放射性を帯び
ている。同機゛小酸化鉄（ａ）の放射能は。More adheres to the inner circumference than the outer circumference, reducing the sealing function. The minute iron oxide (a) is radioactive. The radioactivity of the same product is small iron oxide (a).
外周側よりも内周側の方が高く、微小酸化鉄（ａ）を除
去する前及び除去した後の放射能を第１図のガイガーミ
ュラー管（３）により測定する。即ち。The radioactivity is higher on the inner circumferential side than on the outer circumferential side, and the radioactivity is measured before and after removing minute iron oxide (a) using a Geiger-Mueller tube (3) in FIG. That is.
シール面（被測定面） （ｌａ）上に付着している微小
酸化鉄（放射性物質）（ａ）（第４図（Ａ）参照）の放
射能を同シール面（ｌａ）上にセットした鉛板（４）の
貫通孔（５）を介して対向するガイガーミュラー管（３
）により測定しく第４図（Ｉ３）参照）。The radioactivity of minute iron oxide (radioactive substance) (a) (see Figure 4 (A)) attached to the sealing surface (surface to be measured) (la) is measured by the lead set on the same sealing surface (la). Geiger Muller tubes (3) facing each other through the through holes (5) of the plate (4)
) (see Figure 4 (I3)).
次いでシール面（ｌａ）に付着している微小酸化鉄（ａ
）を第４図（Ｃ）の粘着テープ（ｂ）により除去しく第
４図（Ｄ）参照）１次いで微小酸化鉄（ａ）を除去した
シール面（１ａ）を同シール面（ｌａ）上にセットした
鉛板（４）の貫通孔（５）を介して対向するガイガーミ
ュラー管（３）により測定する（第４図（Ｅ）参照）。Next, fine iron oxide (a) adhering to the sealing surface (la)
) with the adhesive tape (b) in Figure 4(C) (see Figure 4(D)) 1. Next, place the sealing surface (1a) from which the minute iron oxide (a) has been removed on the same sealing surface (la). Measurement is performed using the Geiger-Mueller tube (3) facing through the through hole (5) of the set lead plate (4) (see FIG. 4(E)).
この結果を第５．６図に示した。The results are shown in Figure 5.6.
同第５．６図は、微小酸化鉄（ａ）を除去した後の放射
能量が薬液処理して放射性物質を溶解除去した場合の放
射能量と略同じであることを示している。Figure 5.6 shows that the amount of radioactivity after removing minute iron oxide (a) is approximately the same as the amount of radioactivity when the radioactive substance is dissolved and removed by chemical treatment.
（発明の効果）
本発明の放射性物質の除去状態測定方法は前記のように
放射性物質を除去する前及び除去した後の被測定面の状
態を、被測定面上にセットした鉛板の貫通孔を介して対
向するガイガーミュラー管により測定するので、放射性
物質の除去状態を定盤の精度、清浄度、及び測定作業者
の熟練度に関係なく正確に、容易に測定できる効果があ
る。(Effects of the Invention) As described above, the radioactive substance removal state measuring method of the present invention measures the state of the surface to be measured before and after the removal of radioactive materials through the through-hole of a lead plate set on the surface to be measured. Since the measurement is carried out by Geiger-Mueller tubes facing each other through the tube, the removal state of radioactive substances can be accurately and easily measured regardless of the accuracy and cleanliness of the surface plate and the skill level of the measuring operator.
第１図は本発明の放射性物質の除去状態測定方法の実施
に使用する測定装置の構成例を示す斜視図、第２図は放
射性物質の付着状態を示す側面図。
第３図は被測定面の放射能量を示す説明図、第４図（Ａ
）乃ｍ（Ｅ）は作用説明図、第５．６図は測定結果を示
す説明図である。
（１ａ）・・・被測定面、（３）・・・ガイガーミュラ
ー管、（４）・・・鉛板、（５）・・・貫通孔、（ａ）
・・・放射性物質、（ｂ）・・・粘着テープ。
復代理人弁理士岡本重文外２名
第２図
α
；則 ズｉニ イΩ Ｎ ｈ＋ｍ）
””０°０° ２□ｉｌｌヨ究所内
町新浜２丁目１番１号 三菱重工業株式会社高手続補正
書（方式〕
昭和６２年５ 月２６日FIG. 1 is a perspective view showing an example of the configuration of a measuring device used to carry out the method for measuring the state of removal of radioactive substances according to the present invention, and FIG. 2 is a side view showing the state of adhesion of radioactive substances. Figure 3 is an explanatory diagram showing the amount of radioactivity on the surface to be measured, and Figure 4 (A
)~m(E) is an explanatory diagram of the action, and Fig. 5.6 is an explanatory diagram showing the measurement results. (1a)...Surface to be measured, (3)...Geiger Muller tube, (4)...Lead plate, (5)...Through hole, (a)
...Radioactive substance, (b)...Adhesive tape. Sub-Agent Patent Attorney Shigefumi Okamoto and two other persons Fig. 2 α ; Rule Zini Ω N h+m) ””0°0° 2□ill Yokyu-cho Uchimachi Niihama 2-1-1 Mitsubishi Heavy Industries, Ltd. High Procedures Written amendment (method) May 26, 1988
Claims (1)
面上にセットした鉛板の貫通孔を介して対向するガイガ
ーミュラー管により測定し、次いで被測定面に付着して
いる放射性物質を粘着テープ等により除去し、次いで放
射性物質を除去した被測定面を同被測定面上にセットし
た鉛板の貫通孔を介して対向するガイガーミュラー管に
より測定することを特徴とした放射性物質の除去状態測
定方法。The radioactivity of the radioactive substance attached to the surface to be measured is measured using a Geiger-Mueller tube facing through a through hole in a lead plate set on the surface to be measured, and then the radioactivity of the radioactive substance attached to the surface to be measured is measured. of radioactive substances is removed with an adhesive tape or the like, and then the surface to be measured from which the radioactive substances have been removed is measured using a Geiger-Muller tube facing through a through hole in a lead plate set on the same surface to be measured. Method for measuring removal status.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60278032A JPS62259009A (en) | 1985-12-12 | 1985-12-12 | Eliminated state measuring method for radioactive material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60278032A JPS62259009A (en) | 1985-12-12 | 1985-12-12 | Eliminated state measuring method for radioactive material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62259009A true JPS62259009A (en) | 1987-11-11 |
Family
ID=17591698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60278032A Pending JPS62259009A (en) | 1985-12-12 | 1985-12-12 | Eliminated state measuring method for radioactive material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62259009A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50129430A (en) * | 1974-03-05 | 1975-10-13 | ||
| JPS57132094A (en) * | 1981-02-10 | 1982-08-16 | Tokyo Shibaura Electric Co | Radioactive gas leakage protecting device for bwr type reactor |
| JPS5940108A (en) * | 1982-08-31 | 1984-03-05 | Matsushita Electric Works Ltd | Film thickness measuring device |
-
1985
- 1985-12-12 JP JP60278032A patent/JPS62259009A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50129430A (en) * | 1974-03-05 | 1975-10-13 | ||
| JPS57132094A (en) * | 1981-02-10 | 1982-08-16 | Tokyo Shibaura Electric Co | Radioactive gas leakage protecting device for bwr type reactor |
| JPS5940108A (en) * | 1982-08-31 | 1984-03-05 | Matsushita Electric Works Ltd | Film thickness measuring device |
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