CH619807A5 - - Google Patents
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- Publication number
- CH619807A5 CH619807A5 CH433576A CH433576A CH619807A5 CH 619807 A5 CH619807 A5 CH 619807A5 CH 433576 A CH433576 A CH 433576A CH 433576 A CH433576 A CH 433576A CH 619807 A5 CH619807 A5 CH 619807A5
- Authority
- CH
- Switzerland
- Prior art keywords
- solution
- cerium salt
- acid
- salt solution
- decontamination
- Prior art date
Links
- 239000000243 solution Substances 0.000 claims description 90
- 238000000034 method Methods 0.000 claims description 75
- 238000005202 decontamination Methods 0.000 claims description 57
- 230000003588 decontaminative effect Effects 0.000 claims description 50
- 150000000703 Cerium Chemical class 0.000 claims description 42
- 239000012266 salt solution Substances 0.000 claims description 38
- 238000001816 cooling Methods 0.000 claims description 36
- 229910052751 metal Inorganic materials 0.000 claims description 36
- 239000002184 metal Substances 0.000 claims description 36
- 238000011282 treatment Methods 0.000 claims description 36
- 238000011109 contamination Methods 0.000 claims description 31
- 239000002253 acid Substances 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000002904 solvent Substances 0.000 claims description 10
- 229910052684 Cerium Inorganic materials 0.000 claims description 9
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 9
- 230000000536 complexating effect Effects 0.000 claims description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 239000011651 chromium Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 4
- 150000001860 citric acid derivatives Chemical class 0.000 claims description 3
- 150000003891 oxalate salts Chemical class 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 150000000994 L-ascorbates Chemical class 0.000 claims description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- 235000010323 ascorbic acid Nutrition 0.000 claims description 2
- 238000004090 dissolution Methods 0.000 claims description 2
- 238000005530 etching Methods 0.000 claims description 2
- 239000003112 inhibitor Substances 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims 2
- 230000008569 process Effects 0.000 description 41
- 238000012360 testing method Methods 0.000 description 30
- 238000005260 corrosion Methods 0.000 description 19
- 230000007797 corrosion Effects 0.000 description 19
- 238000006243 chemical reaction Methods 0.000 description 7
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 6
- 239000012670 alkaline solution Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 239000007795 chemical reaction product Substances 0.000 description 5
- 229910044991 metal oxide Inorganic materials 0.000 description 5
- 150000004706 metal oxides Chemical class 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- UUMMHAPECIIHJR-UHFFFAOYSA-N chromium(4+) Chemical compound [Cr+4] UUMMHAPECIIHJR-UHFFFAOYSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000000941 radioactive substance Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003929 acidic solution Substances 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000856 hastalloy Inorganic materials 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000788 chromium alloy Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- YWYZEGXAUVWDED-UHFFFAOYSA-N triammonium citrate Chemical compound [NH4+].[NH4+].[NH4+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O YWYZEGXAUVWDED-UHFFFAOYSA-N 0.000 description 2
- MQHWFIOJQSCFNM-UHFFFAOYSA-L Magnesium salicylate Chemical compound [Mg+2].OC1=CC=CC=C1C([O-])=O.OC1=CC=CC=C1C([O-])=O MQHWFIOJQSCFNM-UHFFFAOYSA-L 0.000 description 1
- 229910000796 S alloy Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- VHHVGPDQBHJHFB-UHFFFAOYSA-N [Ti].[Cr].[Ni] Chemical compound [Ti].[Cr].[Ni] VHHVGPDQBHJHFB-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- UMNMQIDGAXZTQC-UHFFFAOYSA-N chromium(3+) dioxido(dioxo)manganese Chemical compound [Mn](=O)(=O)([O-])[O-].[Cr+3].[Mn](=O)(=O)([O-])[O-].[Mn](=O)(=O)([O-])[O-].[Cr+3] UMNMQIDGAXZTQC-UHFFFAOYSA-N 0.000 description 1
- LXMQZGGLHVSEBA-UHFFFAOYSA-N chromium;trihydrate Chemical compound O.O.O.[Cr] LXMQZGGLHVSEBA-UHFFFAOYSA-N 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- YXVFQADLFFNVDS-UHFFFAOYSA-N diammonium citrate Chemical compound [NH4+].[NH4+].[O-]C(=O)CC(O)(C(=O)O)CC([O-])=O YXVFQADLFFNVDS-UHFFFAOYSA-N 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910001235 nimonic Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
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
- G21F9/002—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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Food Science & Technology (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Detergent Compositions (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH433576A CH619807A5 (fi) | 1976-04-07 | 1976-04-07 | |
| GB13136/77A GB1540701A (en) | 1976-04-07 | 1977-03-29 | Decontamination process |
| DE2714245A DE2714245C3 (de) | 1976-04-07 | 1977-03-30 | Verfahren zur Dekontamination von Metalloberflächen |
| FR7710622A FR2347752A1 (fr) | 1976-04-07 | 1977-04-07 | Procede de decontamination de surfaces metalliques |
| US05/785,765 US4162229A (en) | 1976-04-07 | 1977-04-07 | Decontamination process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH433576A CH619807A5 (fi) | 1976-04-07 | 1976-04-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH619807A5 true CH619807A5 (fi) | 1980-10-15 |
Family
ID=4274170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH433576A CH619807A5 (fi) | 1976-04-07 | 1976-04-07 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4162229A (fi) |
| CH (1) | CH619807A5 (fi) |
| DE (1) | DE2714245C3 (fi) |
| FR (1) | FR2347752A1 (fi) |
| GB (1) | GB1540701A (fi) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4287002A (en) * | 1979-04-09 | 1981-09-01 | Atomic Energy Of Canada Ltd. | Nuclear reactor decontamination |
| DE3161291D1 (en) * | 1980-01-08 | 1983-12-08 | Central Electr Generat Board | Descaling process |
| GB2085215A (en) * | 1980-08-11 | 1982-04-21 | Central Electr Generat Board | An application technique for the decontamination of nuclear reactors |
| DE3238886A1 (de) * | 1982-10-21 | 1984-04-26 | Brown Boveri Reaktor GmbH, 6800 Mannheim | Verfahren und einrichtung zum entfernen von ablagerungen auf den oberflaechen der bauteile einer wassergekuehlten kernreaktoranlage |
| CA1229480A (en) * | 1983-07-12 | 1987-11-24 | Alexander P. Murray | Ozone oxidation of deposits in cooling systems of nuclear reactors |
| SE451915B (sv) * | 1984-03-09 | 1987-11-02 | Studsvik Energiteknik Ab | Forfarande for dekontaminering av tryckvattenreaktorer |
| FR2565021B1 (fr) * | 1984-05-25 | 1992-03-06 | Toshiba Kk | Appareil de decontamination de dechets metalliques radioactifs |
| ZA853531B (en) * | 1984-05-29 | 1985-12-24 | Westinghouse Electric Corp | Ceric acid decontamination of nuclear reactors |
| US4880559A (en) * | 1984-05-29 | 1989-11-14 | Westinghouse Electric Corp. | Ceric acid decontamination of nuclear reactors |
| DE3578635D1 (de) * | 1984-10-31 | 1990-08-16 | Kraftwerk Union Ag | Verfahren zur chemischen dekontamination von grosskomponenten und systemen aus metallischen werkstoffen von kernreaktoren. |
| US4701246A (en) * | 1985-03-07 | 1987-10-20 | Kabushiki Kaisha Toshiba | Method for production of decontaminating liquid |
| USRE34613E (en) * | 1985-05-28 | 1994-05-24 | Recytec Sa | Process for decontaminating radioactively contaminated metal or cement-containing materials |
| US4828759A (en) * | 1985-05-28 | 1989-05-09 | Jozef Hanulik | Process for decontaminating radioactivity contaminated metallic materials |
| CH678767A5 (fi) * | 1989-06-30 | 1991-10-31 | Jozef Hanulik Dipl Chem | |
| FR2656949B1 (fr) * | 1990-01-09 | 1994-03-25 | Commissariat A Energie Atomique | Gel decontaminant et son utilisation pour la decontamination radioactive de surfaces. |
| CH682023A5 (fi) * | 1990-10-26 | 1993-06-30 | Recytec Sa | |
| US5170840A (en) * | 1992-06-15 | 1992-12-15 | Grunwald James L | Method for detecting breaches in heat exchanger tubing |
| US5545794A (en) * | 1995-06-19 | 1996-08-13 | Battelle Memorial Institute | Method for decontamination of radioactive metal surfaces |
| US5678232A (en) * | 1995-07-31 | 1997-10-14 | Corpex Technologies, Inc. | Lead decontamination method |
| US5724668A (en) * | 1995-11-07 | 1998-03-03 | Electronic Power Research Institute | Method for decontamination of nuclear plant components |
| US5814204A (en) * | 1996-10-11 | 1998-09-29 | Corpex Technologies, Inc. | Electrolytic decontamination processes |
| US6147274A (en) * | 1996-11-05 | 2000-11-14 | Electric Power Research Insitute | Method for decontamination of nuclear plant components |
| US5805654A (en) * | 1997-04-08 | 1998-09-08 | Wood; Christopher J. | Regenerative LOMI decontamination process |
| US5901368A (en) * | 1997-06-04 | 1999-05-04 | Electric Power Research Institute | Radiolysis-assisted decontamination process |
| GB2328447A (en) * | 1997-08-16 | 1999-02-24 | British Aerospace | A desmutting solution for use prior to anodising |
| BE1011754A3 (fr) * | 1998-02-20 | 1999-12-07 | En Nucleaire Etabilissement D | Procede et installation de decontamination de surfaces metalliques. |
| FR2792763B1 (fr) * | 1999-04-26 | 2004-05-28 | Commissariat Energie Atomique | Procede de decontamination radioactive d'une paroi en acier et dispositif de decontamination radioactive |
| JP3909700B2 (ja) * | 2003-03-04 | 2007-04-25 | 独立行政法人 日本原子力研究開発機構 | 原子炉容器の熱荷重緩和装置 |
| FR2861890B1 (fr) * | 2003-11-04 | 2006-04-07 | Onectra | Procede de decontamination radioactive de surface |
| RU2457560C1 (ru) * | 2011-06-07 | 2012-07-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный технологический университет "СТАНКИН" | Способ химической дезактивации радиоактивных материалов |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1696320C2 (de) * | 1965-02-10 | 1974-03-28 | Stahlwerke Roechling-Burbach Gmbh, 6620 Voelklingen | Verfahren zum Behandeln von geschlossenen Draht- und Bandbunden oder Bündeln von Stäben oder Rohren |
| US3549419A (en) * | 1965-10-19 | 1970-12-22 | Du Pont | Catalytic method for cleaning soiled oven surfaces |
| US3873362A (en) * | 1973-05-29 | 1975-03-25 | Halliburton Co | Process for cleaning radioactively contaminated metal surfaces |
-
1976
- 1976-04-07 CH CH433576A patent/CH619807A5/de not_active IP Right Cessation
-
1977
- 1977-03-29 GB GB13136/77A patent/GB1540701A/en not_active Expired
- 1977-03-30 DE DE2714245A patent/DE2714245C3/de not_active Expired
- 1977-04-07 US US05/785,765 patent/US4162229A/en not_active Expired - Lifetime
- 1977-04-07 FR FR7710622A patent/FR2347752A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2347752A1 (fr) | 1977-11-04 |
| DE2714245A1 (de) | 1977-10-27 |
| DE2714245C3 (de) | 1980-04-10 |
| US4162229A (en) | 1979-07-24 |
| GB1540701A (en) | 1979-02-14 |
| DE2714245B2 (de) | 1979-08-02 |
| FR2347752B1 (fi) | 1980-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |