|
Title:
|
|
Accelerator driven systems. ADS benchmark calculations. Results of stage 2. Radiotoxic waste transmutation
|
|
|
|
Author(s):
|
|
|
|
|
|
Published by:
|
Publication date:
|
|
ECN
NUC
|
1-12-1998
|
|
|
|
ECN report number:
|
Document type:
|
|
ECN-R--98-022
|
Other
|
|
|
|
Number of pages:
|
Full text:
|
|
28
|
Download PDF
|
Abstract:
This report contains the results of calculations made at ECN-Petten of abenchmark to study the neutronic potential of a modular fast spectrum ADS
(Accelerator-Driven System) for radiotoxic waste transmutation. The study is
focused on the incineration of TRans-Uranium elements (TRU), Minor Actinides
(MA) and Long-Lived Fission Products (LLFP), in this case "9"9Tc. The
benchmark exercise is made in the framework of an IAEA Co-ordinated Research
Programme. A simplified description of an ADS, restricted to the reactor
part, with TRU or MA fuel (keff=0.96) has been analysed. All spectrum
calculations have been performed with the Monte Carlo code MCNP-4A. The
burnup calculations have been performed with the code FISPACT coupled to
MCNP-4A by means of our OCTOPUS system. The cross sections are based upon
JEF-2.2 for transport calculations and supplemented with EAF-4 data for
inventory calculations. The determined quantities are: core dimensions, fuel
inventories, system power, sensitivity on external source spectrum and waste
transmutation rates. The main conclusions are: The MA-burner requires only a
small accelerator current increase during burnup, in contrast to the
TRU-burner. The "9"9 Tc-burner has a large initial loading; a more effective
design may be possible. 5 refs.
Back to List