http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H03243883-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5aba0a5c63a41b3a1b149deeddc42b2f |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01T1-167 |
| filingDate | 1990-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_770a2fd566e6abe8d62d44c8fb65fbd0 |
| publicationDate | 1991-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H03243883-A |
| titleOfInvention | Nondestructive measuring instrument for released amount of fission product gas |
| abstract | PURPOSE: To make improvement in S/N and to make nondestructive and accurate measurement of the released amt. of fission product gases by disposing a radiation shielding material into the radiation passage between a used fuel element and a radiation detecting unit. n CONSTITUTION: This measuring instrument is constituted of a radiation converging unit 1, the radiation detecting unit 2, the radiation shielding material 3, and a radiation passage 4. The shielding material 3 is required to have the property of a large difference between the coefft. of radiation absorption of the shielding material 3 to krypton-85 and the coefft. of radiation absorption of the shielding material 3 to the induced radioactivity of a plenum spring 9; for example, an uranium shielding material is used. The influence of the Compton background occurring in the induced radioactivity is lessened in this way and improved S/N is attained. The nondestructive and accurate measurement of the released amt. of the fission product gases existing in the free space of the used fuel element is executed. n COPYRIGHT: (C)1991,JPO&Japio |
| priorityDate | 1990-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 14.