Contribution to RAM analysis of international fusion material irradiation facilities (IFMIF)
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hdl:2099.1/9173
Tipus de documentProjecte/Treball Final de Carrera
Data2009-12
Condicions d'accésAccés obert
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Abstract
International Fusion Material Irradiation Facilities is an initiative for developing materials able
to resist the conditions in the inner walls of a fusion reactor. The most critical aspect is that
one concerning to the 14 MeV neutron flux they have to deal with, which is about 1017
neutron m-2 s-1.
The larger period fusion reactors are working without replacements the more efficient they
will result, so continuous flux has to be delivered to the target as long as possible, testing
materials in the hardest conditions in order to validate them for proper operation in the
reactors. With this aim, availability of the facilities has to be maximized, and RAM analysis
becomes a very useful tool. This study will be performed with RiskSpectrum®.
In the following text the accelerator facilities of IFMIF will be studied. The following issues
will be explained in this report:
· The elaboration of a brief but consistent database of failure rate and repairing time.
· The adaptation of a FMEA.
· The modelization of a Fault tree.
· A first RAM analysis.
The desired availability of 88% will be achieved with this model and this data. Despite that,
this is a first model in which updates will have to be made as the design goes deeper in
detail. For instance, redundancies are not being considered, since they are not a matter of
study in the present state-of-arts.
Critical components are the Heater and the Vacuum Pumping System in the
Radiofrequency Quadrupole, and Diagnostics in both the Low and High Energy Beam
Transport line. Except for the case of the Heater, these are not components but systems,
and it is not strange their importance is bigger than importance associated with basic events
referred to simpler components. These items have to be studied to go deeper in detail,
enabling an analysis in which they are not basic events but gates containing more detailed
failure modes.
Operational validated data from the supplier is specially recommended for the Heater.
Parametric studies are made of elements which have moderated importance but are
numerous, such as Radiofrequency windows and amplifiers.
MatèriesFusion reactors, Nuclear reactors -- Materials, Reactors de fusió, Reactors nuclears -- Materials
ProvinençaAquest document conté originàriament altre material i/o programari no inclòs en aquest lloc web
TitulacióENGINYERIA INDUSTRIAL (Pla 1994)
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
PFC vicente pesudo.pdf | Report | 1,204Mb | Visualitza/Obre |