MOX@EON: EON Operational Experience - US Nuclear Waste ...
MOX@EON: EON Operational Experience - US Nuclear Waste ...
MOX@EON: EON Operational Experience - US Nuclear Waste ...
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Practical Aspects of MOX - Handling (2): MOX-<br />
Reactivity<br />
reactivity-equivalence:<br />
e<br />
dis<br />
∫k<br />
0<br />
( U )<br />
( e)<br />
de =<br />
∞<br />
e<br />
dis<br />
∫k<br />
0<br />
( MOX )<br />
∞<br />
( e)<br />
de<br />
k ref<br />
4,55w/o Pu fiss ,<br />
Pu fiss /Pu tot =63,80%<br />
e dis<br />
alternative<br />
:<br />
( U )<br />
( MOX )<br />
= ( ) ( )<br />
0<br />
0<br />
k<br />
ref<br />
k<br />
e<br />
∞<br />
=<br />
k<br />
or:<br />
• OECD<br />
• equilibrium-cycles<br />
(EKK-study)<br />
∞<br />
e<br />
Excess reactivity less pronounced – Pu-238, Pu-240,<br />
Pu-242<br />
reactivity decline slower – in-situ breed&burn of Pu-<br />
241<br />
Equivalence dependent on<br />
surrounding U-235 enr.:<br />
4,6 4,6 4,6<br />
4,6 4,0 4,6<br />
4,6 4,6 4,6<br />
3,9 3,9 3,9<br />
3,9 3,8 3,9<br />
3,9 3,9 3,9<br />
MOX-4 and<br />
equivalent U-235<br />
enrichment<br />
13
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