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Managing the UK plutonium stockpile: no easy choices (2023)

AuteurW. Bodel, A. Bull, G. Butler, R. Harrison, J. Matthews, D. Warrilow-Brennan
2-05-0-40-06.pdf
Datumaugustus 2023
Classificatie 2.05.0.40/06 (GROOT-BRITTANNIË - PU / MOX / SMP (Sellafield Mox Plant))
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Uit de publicatie:

Executive Summary and Recommendations
Over the last six decades, the UK has built                          the UK. As waste, no energy would be generated, but this
                                                                     option could be expected to reach an earlier end point than
up a stockpile of some 140 tonnes of civil                           use as fuel and to involve less initial cost as part of the overall
plutonium, currently stored as plutonium                             GDF programme.
dioxide powder in Sellafield. The facilities,                        To illustrate the benefits and detriments of these futures,
packaging and conditions of this storage are                         this paper examines the basic attributes of, and activities
currently the subject of an NDA improvement                          involved with, plutonium storage, use as fuel, and disposal as
                                                                     waste. It does this in broad terms in the body of the paper,
programme over the next several decades.                             with a greater level of background and detail in appendices.
After the period of storage, the end point of                        The factors revealed by this examination gave rise to the
the plutonium is being examined against the                          inclusion of “no easy choices” in the study’s title.
possible futures of conversion into either                           The key initial finding is that the current programme of
fuel for nuclear reactors or a wasteform for                         improvement at Sellafield is essential to reduce the risks
                                                                     and hazards of plutonium storage, and this must be a
disposal in the planned UK Geological Disposal                       priority for resources and funding over the next several
Facility (GDF).                                                      decades. This unavoidably long timescale allows time for
                                                                     the choices between “Use” and “Disposal” to be properly
The optimal solid forms for disposal and for use as future           examined: essential when any choice will almost certainly
fuel are distinct, so converting the stored material for	     exclude any later move to another choice. Time is, however,
delivery of one option will foreclose alternatives. It is            a consideration, when the storage of plutonium dioxide
therefore advisable to reach a decision on the ultimate              powder is more hazardous than storing the same plutonium
endpoint before taking firm steps in any direction.                  as a reactor fuel or as a wasteform. This will need to be
As nuclear fuel, the plutonium would generate quantities of          clearly factored into decision making, especially when the
low-carbon energy, the amount of which would vary with the           desire to minimise hazard/risk appears to be taken as an
reactors and fuel types used but could be very significant for       absolute driver in some quarters.