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Management of Commercially Generated Radioactive Waste - U.S. ...

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Spent and<br />

6.31<br />

Recycle<br />

Facilities Note: Lines between boxes<br />

denote waste transportation<br />

between facilities<br />

UF6<br />

FuReator Pu2 Rock Melting Repository<br />

Spent Fuel<br />

Liquid * Drilling/ Excavation<br />

Reactor Reprocessing W * <strong>Waste</strong> Emplacement<br />

Fuel Assemblies Facility &<br />

RH-TRU<br />

* Sealing<br />

Spent (See Expansion Below)<br />

Reactor eiqti<br />

WaAlternatea<br />

Fuel Hulls and Other<br />

STRU wastes<br />

Mined<br />

Geologic<br />

Repository<br />

FUEL CYCLE DIAGRAM - ROCK MELTING<br />

Spent PuO2 Clean Gas<br />

Fuel UF6 (To Atmosphere)<br />

Nuclear<br />

Water<br />

Water<br />

Noncondensable<br />

Gas<br />

Gas Treatment<br />

t<br />

(Filtration,<br />

Fuel Reproc e Colting cCoole<br />

Scrubbing,<br />

Plant Condenser<br />

Water<br />

and<br />

Solidification)<br />

Liquid <strong>Waste</strong><br />

Cavity<br />

Steam<br />

FLOW DIAGRAM - ROCK MELTING DISPOSAL<br />

FIGURE 6.1.4. <strong>Waste</strong> <strong>Management</strong> System-Rock Melting Disposal<br />

The reference concept design for rock melt disposal was selected through judgment <strong>of</strong> a<br />

"most likely" approach based on available information and data and is not supported by a de-<br />

tailed systems engineering analysis. The fuel cycle and process flow for this concept are<br />

shown in Figure 6.1.4. In the reference concept, a repository is designed for disposal <strong>of</strong> 4<br />

million liters per yr (5,000 MTHM/yr) <strong>of</strong> high-level liquid waste (HLLW) for 25 years. This<br />

requires three 6,000 m 3 (212,000 ft 3 ) cavities, about 2,000 m (6,560 ft) below the sur-<br />

face on a single site. The three cavities would be located about 2,000 m from each other<br />

(Bechtel 1979a).

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