Obiettivo
The Riso Hot Cell Facility, which was in operation for 26 years (1964-1990), comprises 6 concrete cells, lead cells, glove boxes, a shielded unit for temporary storage of waste until shipment, a frogman area, decontamination areas, workshops, various installations of importance for safe operation of the plant, offices, etc. The facility presented was used for physical and chemical post-irradiation investigations of various types of fuel pins (LWR, HTGR), including plutonium enriched pins.
The general objective of the decommissioning programme for the Hot Cell facility is to obtain a safe condition for the whole building that does not require the special safety provisions which were necessary for operation of the hot cell plant. As a result, the Hot Cell building will be usable for the other purposes.
Work includes the removal of all irradiated fuel items, of other radioactive items and of contaminated equipment, and decontamination of all cells and rooms. The project is expected to produce specific data on manpower, waste arisings and radiation exposures for the decommissioning of a total hot cell line.
The contractual work will lead to the identification of an assessed procedure appropriate for the decontamination and the dismantling of equipment of a hot cell line used for post-irradiation tests on nuclear fuel pins of different types.
The contractor will execute the work programme in co-operation with BNFL plc, Sellafield (UK), which is decommissioning the B 205 Fuel Reprocessing Pilot Plant, by using, to any suitable extent, common techniques, procedures and instrumentation.
The latest dose rate measurements determined after a former partial decontamination of a concrete cell were in the order of magnitude of 1-2 mGy/h.
The Risoe hot cell facility comprises 6 concrete cells, lead cells, glove boxes, a shielded unit for temporary storage of waste until shipment, a frogman area, decontamination areas, workshops, various installations of importance for safe operation of the plant, offices, etc. The facility was used for physical and chemical postirradiation investigations of various types of fuel pins. The general objective of the decommissioning programme for the hot cell facility is to obtain a safe condition for the whole building that does not require the special safety provisions which were necessary for operation of the hot cell plant. As a result, the hot cell building will be usable for other purposes. Work includes the removal of all irradiated fuel items, of other radioactive items and of contaminated equipment, and decontamination of all cells and rooms. The project is expected to produce specific data on manpower, waste arising and radiation exposures for the decommissioning of a total hot cell line.
The main efforts have been to remove fissile material, glove boxes, lead shielded steel boxes, the microscope and the tube transfer system, together with a large amount of scrap material from the concrete cell line. A few initial contamination and radiation measurements from a shutter between the cells, from the shutter housing and from one relatively clean cell have been analyzed.
WORK PROGRAMME
1. Removal of fissile material in the form of uranium oxides and uranium/plutonium mixed oxides
2. Removal of large contaminated equipment, including the power manipulator, the cell crane and all experimental equipment.
3. Removal of large contaminated facilities, including all lead-shielded steel boxes and glove boxes, the shielded storage facility, the conveyer, the microscope cell.
4. Decontamination of concrete cells by various procedures, with preceding and subsequent radiation measurements
4.1. Initial mapping of radiation levels in remote operation
4.2. Coarse cleaning by vacuum cleaning, conventional washing and possibly by special techniques
4.3. Final cleaning with conventional methods
4.4. Hot spot removal by special techniques.
5. Decontamination and radiological measurements of cell ventilators and ventilation ducts
6. Decontamination of room surfaces
7. Removal of active drains from various facilities
8. Generation of specific data on costs, radioactive job doses, working time and secondary waste arisings, derived from the execution of items 2 to 7.
Campo scientifico (EuroSciVoc)
CORDIS classifica i progetti con EuroSciVoc, una tassonomia multilingue dei campi scientifici, attraverso un processo semi-automatico basato su tecniche NLP. Cfr.: Il Vocabolario Scientifico Europeo.
CORDIS classifica i progetti con EuroSciVoc, una tassonomia multilingue dei campi scientifici, attraverso un processo semi-automatico basato su tecniche NLP. Cfr.: Il Vocabolario Scientifico Europeo.
- scienze naturali scienze fisiche ottica microscopia
- ingegneria e tecnologia ingegneria ambientale energia e carburanti
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Programma(i)
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Programmi di finanziamento pluriennali che definiscono le priorità dell’UE in materia di ricerca e innovazione.
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Gli inviti a presentare proposte sono suddivisi per argomenti. Un argomento definisce un’area o un tema specifico per il quale i candidati possono presentare proposte. La descrizione di un argomento comprende il suo ambito specifico e l’impatto previsto del progetto finanziato.
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Procedura per invitare i candidati a presentare proposte di progetti, con l’obiettivo di ricevere finanziamenti dall’UE.
Meccanismo di finanziamento
Meccanismo di finanziamento (o «Tipo di azione») all’interno di un programma con caratteristiche comuni. Specifica: l’ambito di ciò che viene finanziato; il tasso di rimborso; i criteri di valutazione specifici per qualificarsi per il finanziamento; l’uso di forme semplificate di costi come gli importi forfettari.
Meccanismo di finanziamento (o «Tipo di azione») all’interno di un programma con caratteristiche comuni. Specifica: l’ambito di ciò che viene finanziato; il tasso di rimborso; i criteri di valutazione specifici per qualificarsi per il finanziamento; l’uso di forme semplificate di costi come gli importi forfettari.
Coordinatore
ROSKILDE
Danimarca
I costi totali sostenuti dall’organizzazione per partecipare al progetto, compresi i costi diretti e indiretti. Questo importo è un sottoinsieme del bilancio complessivo del progetto.