http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4277680-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7e81cbda9149eec88edddbca91fed234 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0026e167856651fc442707db8eea6d9a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N23-05 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N23-05 |
| filingDate | 1979-04-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1981-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_42ff06b13db1c154a2fcdc55e88cb46b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fe3ab3c6389582cd7ce335e5c573169f |
| publicationDate | 1981-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-4277680-A |
| titleOfInvention | Neutron poison test device for high density spent fuel storage racks |
| abstract | A neutron poison test device for verifying that high density spent nuclear fuel racks contain neutron poison (a substance that absorbs neutrons without inducing a nuclear fission which produces more neutrons) comprises a can having a square cross-section, which contains a fast neutron source and neutron moderator, and four square cans each containing a thermal neutron detector, one detector can positioned opposite each of the four walls of the source can. The five cans are carried at the lower ends of five elongated tubes, which are connected together at the top by a structure having means for receiving the lifting hook of a hoist or crane. A neutron shield having a hollow square cross-section is supported for sliding movement on the center tube and is adapted to envelop the source can when the test device is outside the high density storage rack. Each of the four walls of the sliding shield contains a Boral plate or other thermal neutron absorber plate. The interior of the source can is filled with a moderating material (paraffin or water) which slows or thermalizes the neutrons. The can is partitioned to permit certain zones and layers of the moderator to be mixed with neutron absorber, thus providing shielding in desired directions, but permitting an unshielded flow of neutrons toward the detectors. Shielding prevents unnecessary radiation doses to workers using the device. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0026921-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0026921-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6327321-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006056566-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107561103-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5965829-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8247776-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009166540-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6332906-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5342158-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5811818-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4822552-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106970095-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2011051883-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5035342-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106970095-B |
| priorityDate | 1979-04-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 36.