Investigation of breached depleted UF{sub 6} cylinders

Prediction of External Corrosion for Steel Cylinders - 1998 Report

“…The wall thickness data used for the initial thickness consisted of either data collected with the automated scanner near where the maximum pit occurred (with a width and height of approximately the same size as the pit data), or was collected using a hand-held probe for a circular region with a radius of about 2 mm (0.08 in). These are the two cylinders that were dettrmined to breach from external corrosion (Barber et al 1994). Table 4.…”

“…K Yard at Oak Ridge, Thin-Walled Cylinders i K-1066-K yard, located at the K-25 plant in Oak Ridge Tennessee, contains 2942 thin-walled cylinders, ranging in age (in 1996) from about 32 years to 39 years. These cylinders were initially stored at K-1066-G yard at Oak Ridge starting at about 1966, and relocated in 1983 (Barber et al 1994). During the six month period 12/93 to 5/94, pit depth and wall thickness measurements were made for 136 cylinders (Philpot 1995) using an automated scanner.…”

“…Also included in the dataset are two breached cylinders discovered on K-1066-K yard in 1992 (Barber et al 1994). …”

“…When utilizing these data, there are two features of this dataset that require assumptions to be made: (1) how to incorporate the two cylinders discovered in 1992 that were deemed to breach clue to external corrosion (Barber et al 1994), and (2) whether or not the top and bottom row populations should be modeled separately. In this report, the breaches are included and the top and bottom row populations are combined.…”

Depleted uranium hexafluoride management program : data compilation for the Portsmouth site.

“…× 18 in. (23 cm × 46 cm), with an estimated maximum material loss of about 109 lb (49 kg) (Barber et al 1994). This cylinder was patched, and the contents were subsequently transferred to a new cylinder.…”