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During the development of the wire wrapped 19 element bundles for Douglas Point, there was growing concern of the possibility of inter-element fretting of the thin .015 in. thick fuel sheaths. A study was launched to come up with different ways of spacing the elements and also to delete the end plates. The following bundles are an illustration of what were considered. The first example is the twisted tape bundle for so-called better mixing. The center element was made strong enough to take the fueling machine loads and the outer elements were recessed for the fueling machine side stops. Did not graduate.

Ron Page, email 2001.08.19 to WJG