For a dismantling task in the reactor of the Institut Laue-Langevin (ILL) in Grenoble two manually operated internal pipe cutting devices were developed. (Oval pipe cutter and internal pipe milling device) A special challenge was the cutting of a tube with an oval cross-section. Also for this purpose, Babcock Noell developed the appropriate problem solution.

The complete milling head with drive was installed onto Triplex type chains, with which the feed motion was made. The milling head was guided by two sliding rails, formed according to the tube outlining.

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