KR840007798A - Decontamination Method for Pressurized Water Nuclear Reactor (加壓 水 形 原子 爐) - Google Patents

Decontamination Method for Pressurized Water Nuclear Reactor (加壓 水 形 原子 爐) Download PDF

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Publication number
KR840007798A
KR840007798A KR1019840000495A KR840000495A KR840007798A KR 840007798 A KR840007798 A KR 840007798A KR 1019840000495 A KR1019840000495 A KR 1019840000495A KR 840000495 A KR840000495 A KR 840000495A KR 840007798 A KR840007798 A KR 840007798A
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South Korea
Prior art keywords
acid
decontamination
less
permanganate
ozone
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KR1019840000495A
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Korean (ko)
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아르베겐(외 1) 얀
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쿠르르 헬로스
슈투드스비크 에네르기테크니크 아베
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Publication of KR840007798A publication Critical patent/KR840007798A/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
    • G21F9/28—Treating solids
    • 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
    • G21F9/004—Decontamination of the surface of objects with chemical or electrochemical processes of metallic surfaces

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  • Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Detergent Compositions (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

내용 없음.No content.

Description

가압수형원자로의 오염제거방법(加壓水形原子爐의 汚染除去方法)Decontamination Method for Pressurized Water Nuclear Reactor (加壓 水 形 原子 爐)

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (10)

가압수형원자로내의 일차계 표면으로부터 방사성핵종으로 오염된 산-불용성 부식생성물을 오염제거하는 방법, 특히 오염된 표면을 산화제와 접촉시키고, 산화에 의하여 산-가용성이된 부식 생성물을 산성오염 제거용액내에 용해시킴으로써 크롬-니켈-철 합금으로부터 산화크롬(III)을 오염제거하는 방법에 있어서 ; 7이하의 pH를 갖고, 과망간산염과 크롬산 및 오존을 오염제거가능한 비율로 함유하는 수성산화제에 의하여 산화반응을 수행하는 것을 특징으로 하는, 가염수형원자로의 산-불용성 부식생성물을 오염제거하는 방법.Methods of decontaminating acid-insoluble corrosion products contaminated with radionuclides from the primary system surface in pressurized water reactors, in particular contacting the contaminated surfaces with oxidants and acid-soluble corrosion products in the acid decontamination solution In the method of decontaminating chromium (III) oxide from a chromium-nickel-iron alloy by dissolving; A method for decontaminating an acid-insoluble corrosion product having a pH of 7 or less and carrying out an oxidation reaction with an aqueous oxidizing agent containing permanganate, chromic acid and ozone in a decontaminating ratio. 제1항에 있어서, 산화제가 포화용액내에서 분산된 형태인 과망간산염과 크롬산 그리고 오존의산성수용액인 것을 특징으로하는 오염제거방법.The decontamination method according to claim 1, wherein the oxidizing agent is an acidic aqueous solution of permanganate, chromic acid and ozone dispersed in a saturated solution. 제1항에 있어서, 산화제가 2-상 오존기체-수성혼합물이고 여기서 기체상의 오존이 과망간산염과 크롬산의 산성수용액에 분산되어 있는것을 특징으로하는 오염제거방법.2. The method of claim 1, wherein the oxidant is a two-phase ozone gas-aqueous mixture wherein the gaseous ozone is dispersed in an acidic aqueous solution of permanganate and chromic acid. 제1항, 제2항 또는 제3항에 있어서, 과망간산염은 과망간산칼륨인 것을 특징으로하는 오염제거방법.The method for decontamination according to claim 1, 2 or 3, wherein the permanganate salt is potassium permanganate. 제1항, 제2항, 제3항에 있어서, 산화는 약 60℃ 이하의 온도에서 바람직하게는 약 25℃ 이하, 특히 약 20℃ 이하의 온도에서 수행되는 것을 특징으로하는 오염제거의방법.The method of claim 1, 2 or 3, wherein the oxidation is carried out at a temperature of about 60 ° C. or less, preferably at about 25 ° C. or less, in particular at about 20 ° C. or less. 제1항 내지 제3항중 어느하나에 있어서, 산성오염제거용액에 의한 산화된 생성물의 용해가 약 25℃ 이하의 온도에서 바람직하게는 약 20℃ 이하의 온도에서 수행되는 것을 특징으로하는 오염제거의 방법.The decontamination of claim 1, wherein dissolution of the oxidized product by the acid decontamination solution is carried out at a temperature of about 25 ° C. or less, preferably at a temperature of about 20 ° C. or less. Way. 제1항 내지 제3항중 어느하나에 있어서, 수성산화제가 질산 또는 지방족 포화 일염기 카르복시산으로 pH7이하로, 바람직하게는 pH 약 3으로 산성화된것을 특징으로하는 오염제거의 방법.The process according to any one of claims 1 to 3, wherein the aqueous oxidizing agent is acidified with nitric acid or aliphatic saturated monobasic carboxylic acid to pH 7 or below, preferably pH about 3. 제7항에 있어서, 지방족포화일염기 카르복시산이 아세트산인 것을 특징으로하는 오염제거의 방법.8. The method for decontamination according to claim 7, wherein the aliphatic monobasic carboxylic acid is acetic acid. 제1항 내지 제3항중 어느 하나에 있어서, 산성오염제거용액이 시트트산 또는 옥살산의 수용액인 것을 특징으로하는 오염제거의 방법.The decontamination method according to any one of claims 1 to 3, wherein the acidic decontamination solution is an aqueous solution of citric acid or oxalic acid. 제1항 내지 제3항중 어느하나에 있어서, 과망간산염의 농도가 0.01-50g/l, 바람직하게는0.5g-2g/l이고, 크롬산의 농도가 0.01-50g/l, 바람직하게는 0.05-0.2g/l이고, 오존의 농도가 0.001-1g/l, 바람직하게는 0.005-0.015g/l인 것을 특징으로하는 오염제거의 방법.The method according to any one of claims 1 to 3, wherein the concentration of permanganate is 0.01-50 g / l, preferably 0.5 g-2 g / l, and the concentration of chromic acid is 0.01-50 g / l, preferably 0.05-0.2 g. / l and the concentration of ozone is 0.001-1g / l, preferably 0.005-0.015g / l. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019840000495A 1983-02-09 1984-02-03 Decontamination Method for Pressurized Water Nuclear Reactor (加壓 水 形 原子 爐) KR840007798A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8300685 1983-02-09
SE8300685A SE435329B (en) 1983-02-09 1983-02-09 DECOMINATION OF PRESSURE WATER REACTORS

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KR840007798A true KR840007798A (en) 1984-12-10

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EP (1) EP0137002A1 (en)
KR (1) KR840007798A (en)
ES (1) ES529540A0 (en)
SE (1) SE435329B (en)
WO (1) WO1984003170A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE451915B (en) * 1984-03-09 1987-11-02 Studsvik Energiteknik Ab PROCEDURE FOR DECOMPOSITION OF PRESSURE WATER REACTORS
EP0180826B1 (en) * 1984-10-31 1990-07-11 Siemens Aktiengesellschaft Process for chemically decontaminating the metallic main components and systems of nuclear reactors
BE904936A (en) * 1986-06-17 1986-10-16 Lemmens Godfried PROCESS FOR THE DECONTAMINATION OF RADIOACTIVALLY CONTAMINATED MATERIALS.
CH673545A5 (en) * 1987-10-02 1990-03-15 Industrieorientierte Forsch
US4913849A (en) * 1988-07-07 1990-04-03 Aamir Husain Process for pretreatment of chromium-rich oxide surfaces prior to decontamination
FR2648946B1 (en) * 1989-06-27 1994-02-04 Electricite De France PROCESS FOR THE DISSOLUTION OF OXIDE DEPOSITED ON A METAL SUBSTRATE AND ITS APPLICATION TO DECONTAMINATION
FR2730641B1 (en) * 1995-02-20 1997-03-14 Commissariat Energie Atomique OZONE DECONTAMINATION FOAM, AND DECONTAMINATION METHOD USING THE SAME
US6635232B1 (en) * 1999-05-13 2003-10-21 Kabushiki Kaisha Toshiba Method of chemically decontaminating components of radioactive material handling facility and system for carrying out the same
TW529041B (en) * 2000-12-21 2003-04-21 Toshiba Corp Chemical decontamination method and treatment method and apparatus of chemical decontamination solution
JP3849925B2 (en) * 2000-12-21 2006-11-22 株式会社東芝 Chemical decontamination method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2358683A1 (en) * 1973-11-24 1975-06-05 Kalman Von Dipl Phys Soos Pickling, etching or cleaning of metals, esp. steel - using ozone accelerator in addn. to the other chemicals
US4287002A (en) * 1979-04-09 1981-09-01 Atomic Energy Of Canada Ltd. Nuclear reactor decontamination

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ES8604701A1 (en) 1985-08-16
WO1984003170A1 (en) 1984-08-16
SE8300685L (en) 1984-08-10
ES529540A0 (en) 1985-08-16
EP0137002A1 (en) 1985-04-17
SE8300685D0 (en) 1983-02-09
SE435329B (en) 1984-09-17

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