Long term performance of metal seals for transport and storage casks
| Autor: | Sebastian Schulz, Holger Völzke, Dietmar Wolff, Ulrich Probst, Sven Nagelschmidt |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Packaging, Transport, Storage & Security of Radioactive Material. 25:8-15 |
| ISSN: | 1746-5109 1746-5095 |
| DOI: | 10.1179/1746510914y.0000000057 |
| Popis: | Dual purpose casks for the transportation and storage of spent nuclear fuel and other radioactive materials require very high leak tightness of lid closure systems under accident conditions as well as in the long term to prevent activity release. For that purpose metal seals of specific types with an inner helical spring and outer metal liners are widely used and have shown their excellent performance if certain quality assurance requirements for fabrication and assembling are satisfied. Well defined surface roughness, clean and dry inert conditions are therefore essential. No seal failure in a loaded cask happened under these conditions until today. Nevertheless, the considered and licensed operation period is limited and all safety assessments have been performed and approved for this period of time which is 40 years in Germany so far. However, in the meantime longer storage periods might be necessary for the future and therefore additional material data will be required. BAM is involved in the ... |
| Databáze: | OpenAIRE |
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