designed to remove free tritium from the glovebox gases are not capable of
removing tritium that has plated-out on the interior surfaces of the glovebox or
any of the equipment that is inside the glovebox. Thus, when the box is
opened to room air for maintenance purposes, a " uff"type of tritium release
will occur, such as that described previously under the heading of " utgassing
Expectations." The chemical form of the tritium release will be as HTO.
Low-Quality Secondary Containment Systems . In some situations, tritium
facilities are equipped with low-quality containment systems, such as full-scale
buildings, or one or more rooms inside a building. (See Figure 10.) As a
general rule, containment systems will only be installed as part of a conversion
project, a retrofit project, or an add-on project, where the building or room in
question was not initially intended for tritium handling.
FIGURE 10. Low-quality secondary containment.