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Figure 12. Use of double-valved containers
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Design Considerations - index
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Fusion Test Facilities


DOE-HDBK-1132-99
In operation, the two sets of valves are closed to isolate the component from
the rest of the tritium manifold. A vacuum pump is then connected to the two
purge ports and the purge port valves are opened and the gases trapped
between the isolation valves is evacuated to remove the tritium-contaminated
gases. In most applications, air is then allowed to enter the purged volume and
the evacuation operation is then repeated.
FIGURE 13. Purge ports and isolation valves.
I-126


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