quality, secondary containment jackets are most often used to enclose primary
containment system plumbing when the primary system plumbing is used to
connect systems between one glovebox and another inside a room, between
one system and another inside a building, and between one system and another
when the systems reside in different buildings. High-quality, secondary jackets
are also used quite extensively to enclose primary-containment-system, high-
pressure vessels, where the failure of the primary system vessel might be
expected to release large quantities of tritium. (See, for example, Figure 8.)
High-quality, secondary jackets are also used to enclose individual primary
containment system components that are temperature cycled on a routine basis.
In this case, however, the purpose of the high-quality secondary containment
jacket is to capture any tritium that has permeated through the walls of the
primary system component as a direct result of the temperature cycling.
FIGURE 8. High-quality secondary containment.