“…These include the deployment of open wall ion chambers, TLDÕs, smear surveys, and pin diodes [5,6 ]. The major advantages of the tritium imaging system described here compared to non-imaging techniques are that (a) the tritium imaging system used is non-destructive, as the surface of the item being imaged is not disturbed, (b) this imagining method provides a real time assaying technique, and (c) it is fast and relatively inexpensive [7,8,9].…”