Tome Architecture and management of a geological repository - Andra
Tome Architecture and management of a geological repository - Andra
Tome Architecture and management of a geological repository - Andra
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5 – B waste <strong>repository</strong> zone30,0Puissance thermique (Watt par colis)25,020,015,010,05,0Colis primaire contenant desdéchets de structure decombustibles REP UOX, URE etMOX, compactés0,01 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59Age du colis (an)Figure 5.1.12Changes in residual heat rating in cladding waste primary packages from PWRUOX, URE (enriched recycled uranium) <strong>and</strong> MOX fuels• Cemented cladding waste (reference packages B4)The cladding waste from the PWR fuel assemblies is initially cemented into huge stainless steeldrums. This process was applied between 1990 <strong>and</strong> 1995, then replaced in 2002 by waste compacting,in the hull compacting workshop (ACC) at La Hague.The packages produced between 1990 <strong>and</strong> 1995 are called drums <strong>of</strong> cemented hulls <strong>and</strong> end caps(Figure 5.1.13).Figure 5.1.131800-litre stainless steel drum containing cemented cladding wasteThey contain an average <strong>of</strong> 776 kilograms <strong>of</strong> cladding waste, made up <strong>of</strong> 80.7% zirconium-tin(zircaloy 4) alloy, 15.9% stainless steel <strong>and</strong> 3.4% nickel alloy. The package weight (drum + waste +matrix) is 3.5 tonnes on average. The residual heat rating in the packages from the cobalt-60 is todayDossier 2005 Granite - ARCHITECTURE AND MANAGEMENT OF A GEOLOGICAL REPOSITORY107/228
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