Investigation of breached depleted UF sub 6 cylinders Page: 4 of 12
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the original solid UF6 surface. and
a similarly colored layer of salt
covered areas below the hole and on
the underlying cylinder. Some
loose, green salt deposits were also
found on the top of the underlying
cylinder and on the concrete pad
directly under it. Removal of the
salt deposit from the underlying
cylinder revealed a series of vein-
like grooves etched into the
cylinder surface. The grooves were
relatively widely spaced and shallow
near the top of the cylinder but
converged into a much deeper groove
over the right-hand quadrant of the
cylinder. where it reached a maximumdepth of .13 in. :Cine cf the cther
neighboring cylinders showed any
evidence of corrosion.
The smaller of the two holes is
pictured in Fig. 2. The hole lies
at the 3 o'clock position when the
cylinder is viewed from the valve
end. Like the larger hole, it was
positioned at a point close to the
front stiffening ring and again was
located directly under the top
corner of the lifting lug of an
adjacent cylinder. The tpper
circular section of the hole
(Fig. 2) was approximately 2 in. in
diameter and was concentric with tr.e
juxtaposing lifting _"g corner. A
lower tear drop section extended
approximately 2 in. below thes'--
Fig. 1. Appearance of large hole.
Width is 9 in. and length
is 13 in.Fig. 2. Appearanc :--
:idth is 2 :n. ::
s -e on.
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DeVan, J. H. Investigation of breached depleted UF sub 6 cylinders, article, January 1, 1991; Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc1058239/m1/4/: accessed June 8, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.