Nuclear Proliferation TechnologyTrends Analysis - International ...

PNNL-14480
3.1.1.3 Important components/materials
The main components of a gaseous-diffusion stage are:
1. A large cylindrical vessel called a diffuser or converter that contains the barrier
(or diffuser),
2. A compressor used to compress the gas to the pressures needed for flow through
the barrier,
3. An electric motor used to drive the compressor,
4. A heat exchanger to remove the heat of compression,
5. Piping and valves for stage and inter-stage connections and process control.
Figure 1 Stage Arrangement and components in a U.S gaseous diffusion plant
Table 1 4 identifies specific technologies used in gaseous diffusion enrichment facilities,
describes the technology level needed for successful use, and lists critical materials and
unique equipment used.
3.1.2 Technology Development
3.1.2.1 Technological difficulties in use
There are a number of technical difficulties with gaseous diffusion technology. These
included the difficulties of making and maintaining a suitable barrier, large energy
4 Department of Defense, Militarily Critical Technologies List, Part II: Weapons of Mass Destructions Technologies, Section 5 –
Nuclear Weapons Technology, February 1998.
4