DE3439864C2 - Verfahren zur chemischen Dekontamination von Wärmetauschern wassergekühlter Kernreaktoren - Google Patents
Verfahren zur chemischen Dekontamination von Wärmetauschern wassergekühlter KernreaktorenInfo
- Publication number
- DE3439864C2 DE3439864C2 DE19843439864 DE3439864A DE3439864C2 DE 3439864 C2 DE3439864 C2 DE 3439864C2 DE 19843439864 DE19843439864 DE 19843439864 DE 3439864 A DE3439864 A DE 3439864A DE 3439864 C2 DE3439864 C2 DE 3439864C2
- Authority
- DE
- Germany
- Prior art keywords
- water
- tubes
- decontamination
- filled
- permanganic acid
- 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.)
- Expired
Links
- 238000009390 chemical decontamination Methods 0.000 title claims abstract description 4
- 238000000034 method Methods 0.000 title claims description 13
- 239000007789 gas Substances 0.000 claims abstract description 24
- 238000005202 decontamination Methods 0.000 claims abstract description 16
- 230000003588 decontaminative effect Effects 0.000 claims abstract description 16
- 238000011282 treatment Methods 0.000 claims abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000007769 metal material Substances 0.000 claims abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 3
- 239000001301 oxygen Substances 0.000 claims abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 229910001868 water Inorganic materials 0.000 claims description 14
- 235000006408 oxalic acid Nutrition 0.000 claims description 7
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims 2
- 239000001569 carbon dioxide Substances 0.000 claims 2
- 229910021529 ammonia Inorganic materials 0.000 claims 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 claims 1
- 239000000243 solution Substances 0.000 abstract description 9
- 239000007864 aqueous solution Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000013022 venting Methods 0.000 abstract 1
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001293 incoloy Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001179 sorption measurement 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)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Physical Water Treatments (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843439864 DE3439864C2 (de) | 1984-10-31 | 1984-10-31 | Verfahren zur chemischen Dekontamination von Wärmetauschern wassergekühlter Kernreaktoren |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843439864 DE3439864C2 (de) | 1984-10-31 | 1984-10-31 | Verfahren zur chemischen Dekontamination von Wärmetauschern wassergekühlter Kernreaktoren |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3439864A1 DE3439864A1 (de) | 1986-04-30 |
| DE3439864C2 true DE3439864C2 (de) | 1987-05-07 |
Family
ID=6249199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19843439864 Expired DE3439864C2 (de) | 1984-10-31 | 1984-10-31 | Verfahren zur chemischen Dekontamination von Wärmetauschern wassergekühlter Kernreaktoren |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3439864C2 (es) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4232246A1 (de) * | 1992-09-25 | 1994-03-31 | Siemens Ag | Verfahren zur Zerstörung einer organischen Substanz |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0278256A1 (de) * | 1987-01-28 | 1988-08-17 | Siemens Aktiengesellschaft | Verfahren und Einrichtung zum Entfernen von Oxidschichten |
| CH678767A5 (es) * | 1989-06-30 | 1991-10-31 | Jozef Hanulik Dipl Chem |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD108843A1 (es) * | 1973-11-26 | 1974-10-05 | ||
| FR2534410A1 (fr) * | 1982-10-12 | 1984-04-13 | Sfermi | Procede et dispositif de decontamination de generateur de vapeur annexe a un reacteur nucleaire |
| US4963293A (en) * | 1983-06-07 | 1990-10-16 | Westinghouse Electric Corp. | Flow control method for decontaminating radioactively contaminated nuclear steam generator |
-
1984
- 1984-10-31 DE DE19843439864 patent/DE3439864C2/de not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4232246A1 (de) * | 1992-09-25 | 1994-03-31 | Siemens Ag | Verfahren zur Zerstörung einer organischen Substanz |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3439864A1 (de) | 1986-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: SIEMENS AG, 80333 MUENCHEN, DE |
|
| 8320 | Willingness to grant licences declared (paragraph 23) | ||
| 8339 | Ceased/non-payment of the annual fee |