KR970060257A - Clay decontamination agent for radioactive contamination surface cleaning and its preparation and purification method therefor - Google Patents

Clay decontamination agent for radioactive contamination surface cleaning and its preparation and purification method therefor Download PDF

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Publication number
KR970060257A
KR970060257A KR1019960001052A KR19960001052A KR970060257A KR 970060257 A KR970060257 A KR 970060257A KR 1019960001052 A KR1019960001052 A KR 1019960001052A KR 19960001052 A KR19960001052 A KR 19960001052A KR 970060257 A KR970060257 A KR 970060257A
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KR
South Korea
Prior art keywords
clay
radioactive
contaminated
decontamination agent
ammonium
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KR1019960001052A
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Korean (ko)
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KR100253476B1 (en
Inventor
안병길
원휘준
오원진
박현수
Original Assignee
신재인
한국원자력연구소
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Priority to KR1019960001052A priority Critical patent/KR100253476B1/en
Publication of KR970060257A publication Critical patent/KR970060257A/en
Application granted granted Critical
Publication of KR100253476B1 publication Critical patent/KR100253476B1/en

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    • 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
    • G21F9/002—Decontamination of the surface of objects with chemical or electrochemical processes

Abstract

본 발명은 방사능 물질에 의하여 오염된 표면을 청정화하는 분야에 관한 것으로서 효과적이고 경제적으로 정화하는 물질에 대한 것으로서 점토를 기본 물질로 방사능 핵종과 교환 가능한 이온을 함유하는 것을 특징으로 하며 용해성 방사성 핵종 및 입자성 방사성 핵종을 제거하고 오염 표면정화 후 방사능이 포함된 잔존물의 회수가 용이한 형태로 존재하도록 하는 것을 특징으로 하는 방사능 오염 표면 정화용 점토 제염제.The present invention relates to a field for purifying a surface contaminated by a radioactive material, and is characterized in that it contains an ion exchangeable with a radioactive nuclide as a base material of clay for effective and economical purification. Removing the radioactive radionuclides and allowing the remnants containing radioactivity to be recovered in an easy form after purification of the contaminated surface.

Description

방사능 오염 표면 정화용 점토 제염제 및 그 제조 및 이를 이용한 정화방법Clay decontamination agent for radioactive contamination surface cleaning and its preparation and purification method therefor

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 본 발명에 사용하는 점토 제염제의 적용 횟수에 따른 방사능 세슘(Cs-137)으로 오염된 재료 표면의 방사능 제거효과를 입증하는 도면.FIG. 1 is a view for demonstrating the radioactivity removal effect of a surface of a material contaminated with radioactive cesium (Cs-137) according to the number of applications of the clay decontamination agent used in the present invention.

제2도는 본 발명에 사용하는 점토 제염제의 전단속도에 따른 점도변화의 관계를 나타내는 도면.FIG. 2 is a view showing the relationship of the viscosity change according to the shear rate of the clay decontamination agent used in the present invention. FIG.

Claims (9)

점토를 기본 물질로 방사능 핵종과 교환가능한 이온을 함유하는 것을 특징으로 하며 용해성 방사성 핵종 및 입자성 방사성 핵종을 제거하고 오염 표면정화 후 방사능이 포함된 잔존물의 회수가 용이한 형태로 존재하도록 하는 것을 특징으로 하는 방사능 오염 표면 정화용 점토 제염제.Characterized in that it contains ions capable of exchanging radioactive nuclides as a basic substance of clay and is characterized in that soluble radioactive nuclides and particulate radioactive nuclides are removed and remnants containing radioactivity after purification of contaminated surfaces are easily recovered Which is a radioactive contaminated surface cleansing clay decontaminating agent. 점토분말 1g에 대해 첨가되는 교환성 이온으로 암모늄, 암모늄 수산화물 또는 암모늄 염에 대해 암모늄이온 농도로 0.0001~0.02몰(mole), 나트륨 수산화물 또는 나트륨 염에 대하여 나트륨 이온 농도로 0.0001~0.03몰(mole)의 범위이고, 첨가되는 수용성 고분자는 폴리 비닐 알콜(poly vinyl alcohol), 폴리비닐 아세테이트(poly vinyl acetate), 폴리 에틸렌 글리콜(poly ethylene glycol)이며 단량체(monomer) 기준으로 점토 1g에 대하여 0.001~0.2 몰(mole) 범위인 것을 특징으로 하는 방사능 오염표면 정화용 점토 제염제.Exchangeable ions added to 1 g of clay powder, 0.0001 to 0.02 moles in terms of ammonium ion concentration with respect to ammonium, ammonium hydroxide or ammonium salt, 0.0001 to 0.03 moles in sodium ion concentration with respect to sodium hydroxide or sodium salt, And the water-soluble polymer to be added is poly vinyl alcohol, poly vinyl acetate, poly ethylene glycol and is used in an amount of 0.001 to 0.2 moles per 1 g of clay based on the monomer. (mole) of the surface of the clay soil. 대단위 또는 국부적으로 오염된 도시표면, 구조물 표면, 도장표면, 플라스틱 표면, 방사능 취급 시설 표면에 존재하는 용해성 및 입자성 방사성 핵종과 중금속을 제거하기 위하여 점토 제염제를 사용하는 것을 특징으로 하는 방사능 오염 표면 정화 방법.Characterized in that a clay decontamination agent is used to remove soluble and particulate radionuclides and heavy metals present on large or locally contaminated urban surfaces, structure surfaces, paint surfaces, plastic surfaces, and radioactive handling surfaces, How to clean. 제3항에 있어서, 청정화 작업으로 인하여 액체 또는 기체에 의한 오염 확산이 없고 최종 산출될 물질이 건조 고체 무기물상으로 존재하는 방법.4. The method of claim 3, wherein the cleanup operation results in no contamination spread by the liquid or gas and the final product is present in the dry solid inorganic material. 제3항에 있어서, 청정화 작업이 상온에서 진행되는 방법.4. The method of claim 3 wherein the cleaning operation is conducted at room temperature. 제3항에 있어서, 청정화 작업시 방사성 물질이 포함된 미세분진의 발생이 없는 방법.The method according to claim 3, wherein fine dust containing a radioactive material is not generated during a purification operation. 제 3항에 있어서, 오염 표면을 훼손시키지 않고 정화시키는 방법.The method according to claim 3, wherein the contaminated surface is cleaned without damaging it. 제3항에 있어서, 도포용 롤러, 붓을 사용한 근거리 적용 및 분사장비를 사용하여 최소한 1미터 이상의 거리에서 제염제를 적용할 수 있는 방법.The method according to claim 3, wherein the decontamination agent can be applied at a distance of at least 1 meter by using an application roller, a near-point application using a brush, and a jetting apparatus. 제8항에 있어서 상온 및 정체상에는 겔상을 유지하고 전단 속도 1,000s-1이상에서 점도 0.5 dyne s/㎠이하로 분사하는 방법.The method according to claim 8, wherein the gel is maintained at a room temperature and a static state, and the viscosity is 0.5 dyne s / cm 2 or less at a shear rate of 1,000 s -1 or higher. ※참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960001052A 1996-01-18 1996-01-18 Decontaminant for radioactive surface contamination and the method using the same KR100253476B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960001052A KR100253476B1 (en) 1996-01-18 1996-01-18 Decontaminant for radioactive surface contamination and the method using the same

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Application Number Priority Date Filing Date Title
KR1019960001052A KR100253476B1 (en) 1996-01-18 1996-01-18 Decontaminant for radioactive surface contamination and the method using the same

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KR970060257A true KR970060257A (en) 1997-08-12
KR100253476B1 KR100253476B1 (en) 2000-04-15

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