NASA NTRS · 20110014929
Frozen-Plug Technique for Liquid-Oxygen Plumbing
Abstract
A frozen-plug technique has been conceived as a means of temporarily blocking the flow of liquid oxygen or its vapor through a tube or pipe. The technique makes it possible to perform maintenance, repair, or other work on downstream parts of the cryogenic system in which the oxygen is used, without having to empty an upstream liquid-oxygen reservoir and, hence, without wasting the stored liquid oxygen and without subjecting the reservoir to the stresses of thermal cycling.
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McCaskey, C. E. "Mac", Lobmeyer, Dennis, Nagy, Zoltan, Peltzer, Rich. 2005-06-01. Frozen-Plug Technique for Liquid-Oxygen Plumbing. https://ntrs.nasa.gov/citations/20110014929
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