Figure 13. Purge ports and isolation valves

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.

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