http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-2795002-T3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5bd5b4c938e598490d1fa829cee8b815 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G21F9-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G21F9-004 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G21F9-30 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G21F9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G21F9-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G21F9-30 |
| filingDate | 2018-01-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e90916e0f92a6b2ce1e32ceea8fa544a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_26fcbad42b549d8fee438da747f45d58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aeee480685264a84754a81e3856b9f80 |
| publicationDate | 2020-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-2795002-T3 |
| titleOfInvention | Procedure for decontaminating metallic surfaces of a nuclear facility |
| abstract | A procedure for decontaminating a metallic surface exposed to radioactive liquid or gas during the operation of a nuclear facility, where the metallic surface is covered with a layer of metallic oxide that includes chromium and radioactive material, the procedure comprising: a) an oxidation step where the metal oxide layer is in contact with an aqueous oxidation solution to convert the chromium to a Cr (VI) compound and dissolve the Cr (VI) compound in the oxidation solution, where the aqueous oxidation solution comprises a permanganate oxidant but without additional mineral acid; b) a first cleaning step where the oxidation solution containing the Cr (VI) compound is passed directly over an anion exchange material and the Cr (VI) compound is immobilized on the anion exchange material; c) a decontamination stage that follows the first cleaning stage where the metal oxide layer subjected to the oxidation stage is brought into contact with an aqueous solution of an organic acid to dissolve the metal oxide layer, thus forming a solution decontamination containing organic acid, metal ions and radioactive material, and where the decontamination solution is passed over a cation exchange material to immobilize metal ions and radioactive matter; d) a second cleaning stage where the organic acid contained in the decontamination solution decomposes; and e) optionally, repeating steps a) to d). |
| priorityDate | 2017-01-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 50.